阅读说明：本技术 一种托车及托运车 (Support vehicle and delivery vehicle ) 是由 李树森 李巍 于 2021-08-04 设计创作，主要内容包括：本申请提供了一种托车及托运车,其中,托车包括：车架、车轮组、铰接轴、连接件以及升降装置。其中,车架通过铰接轴相对于液压支架的底座转动,以使连接件抵压在液压支架的底座上或与液压支架的底座分离。本申请提供的托车,通过铰接轴、连接件与升降装置的配合,使托车依能够靠自身功能将液压支架放落到地面上,还能依靠自身功能将位于钢轨上的液压支架支撑起来,实现再次运输,与传统的液压支架搬家倒面的操作流程相比,上述的托车就省略液压支架卸车、液压支架远距离拖运、液压支架装车等工艺流程,将复杂的液压支架搬家倒面工作改变成相对简单的工作,使煤矿井下液压支架的安装工作或者回撤工作的操作方式得到优化。(The application provides a trailer and tow trucks, wherein, the trailer includes: frame, wheel set, articulated shaft, connecting piece and elevating gear. The frame rotates relative to the base of the hydraulic support through the hinged shaft, so that the connecting piece is pressed on the base of the hydraulic support or separated from the base of the hydraulic support. The application provides a trailer, through the articulated shaft, connecting piece and elevating gear's cooperation, make the trailer according to can falling hydraulic support to subaerial by self function, can also rely on self function will be located the hydraulic support on the rail and support, realize the transportation once more, compare with the operation flow that traditional hydraulic support moved the face of falling, foretell trailer just omits hydraulic support and unloads, hydraulic support remote haulage, process flows such as hydraulic support loading, it changes complicated hydraulic support moved the face of falling work into simple work relatively, make colliery hydraulic support's installation work or the operational mode of withdrawal work in the pit obtain optimizing.)

1. The utility model provides a trailer for fix on hydraulic support's base, its characterized in that includes:

a frame;

the wheel set is arranged at the bottom of the frame and can rotate relative to the frame;

the articulated shaft is fixed on the frame and positioned above the wheel set, and the articulated shaft is used for being connected with a base of the hydraulic support and can rotate relative to the base of the hydraulic support;

the connecting piece is fixed on the frame and used for being connected with a base of the hydraulic support, and the connecting piece is positioned above the hinged shaft; and

the lifting device comprises a fixing part and a lifting part, the lifting part can extend out of or be hidden in the fixing part, the lifting part is connected with the top of the frame, and the fixing part is used for abutting against a base of the hydraulic support;

the frame rotates relative to the base of the hydraulic support through the hinged shaft, so that the connecting piece is pressed on the base of the hydraulic support or separated from the base of the hydraulic support.

2. The cart of claim 1,

the frame includes: the bottom of the main board is provided with an inclined plane;

the upper cross beam is supported between the two main plates and is positioned at the upper ends of the main plates, and the lifting part is connected with the upper cross beam; and

and the lower cross beam is supported between the two main plates and is positioned at the lower ends of the main plates.

3. The cart of claim 2,

the mainboard includes interconnect's first board and second board, the first board is located the lower part of mainboard, contained angle between first board and the second board is the acute angle, the lower surface of first board reaches including the plane that connects gradually the inclined plane, the plane is located the bottom of first board.

4. The cart of claim 2,

the upper cross beam is provided with a hinged seat, and the lifting part is hinged with the hinged seat.

5. The cart of claim 4,

the frame still includes the switching axle, the switching axle passes articulated seat, and respectively with two mainboard connection.

6. The cart of claim 2,

and the lower cross beam is provided with a hook part, and the hook part is used for being connected with a lifting winch.

7. The cart of claim 1,

the connecting piece is a blocking frame which comprises a connecting part and a butting part perpendicular to the connecting part, the connecting part is connected with the frame, and the butting part penetrates through the frame and is used for butting against the top surface of the base of the hydraulic support.

8. The cart of claim 1,

the connecting piece is a connecting rod which penetrates through the frame and is used for being pressed on the top surface of the base of the hydraulic support in a propping mode.

9. The cart of claim 1,

the angle fitting frame comprises a first matching surface and a second matching surface which are perpendicular to each other, and the first matching surface and the second matching surface are used for abutting against and pressing the base of the hydraulic support.

10. A trolley, characterized in that it comprises two trolleys according to any one of claims 1 to 9, intended to be fixed to the base of a hydraulic support and arranged symmetrically at the two ends of said hydraulic support.

Technical Field

The application relates to the technical field of machinery, in particular to a trailer and a delivery vehicle with the same.

Background

The hydraulic support is used for coal mine coal mining support, when the hydraulic support is conveyed to a fully mechanized coal mining face under a coal mine, the hydraulic support needs to be hoisted to a special hydraulic support transport vehicle, the hydraulic support is transported to the fully mechanized coal mining face from the ground through a steel rail in a roadway, after the hydraulic support arrives at a specified place, the hydraulic support is unloaded from the transport vehicle by a special hydraulic support crane or a hydraulic support hoisting device, and then the hydraulic support is conveyed to a specified position by using special hauling equipment. The hydraulic support unloading device has the advantages that the hydraulic support unloading device is long in time for unloading hydraulic supports in a roadway, high in difficulty, limited in width and height of the roadway under a coal mine, incapable of being used in the roadway by a large engineering crane, and capable of unloading the hydraulic supports to the ground of the roadway from a transport vehicle only by needing to be equipped with some hoisting equipment and hauling equipment special for the roadway under the coal mine, and then capable of hauling the hydraulic supports to a specified position, and is large in number of related equipment, large in number of related operators, and low in efficiency for loading and unloading the hydraulic supports in the roadway.

Disclosure of Invention

The application aims to provide a trailer and a trolley which are simple in structure and operation.

In order to achieve at least one of the above objects, an embodiment of a first aspect of the present application provides a trailer for being fixed on a base of a hydraulic support, including: a frame; the wheel set is arranged at the bottom of the frame and can rotate relative to the frame; the articulated shaft is fixed on the frame and positioned above the wheel set, and the articulated shaft is used for being connected with a base of the hydraulic support and can rotate relative to the base of the hydraulic support; the connecting piece is fixed on the frame and used for being connected with a base of the hydraulic support, and the connecting piece is positioned above the hinged shaft; the lifting device comprises a fixing part and a lifting part, the lifting part can extend out of or be hidden in the fixing part, the lifting part is connected with the top of the frame, and the fixing part is used for abutting against a base of the hydraulic support; the frame rotates relative to the base of the hydraulic support through the hinged shaft, so that the connecting piece is pressed on the base of the hydraulic support or separated from the base of the hydraulic support.

In some of these embodiments, the frame comprises: the bottom of the main board is provided with an inclined plane; the upper cross beam is supported between the two main plates and is positioned at the upper ends of the main plates, and the lifting part is connected with the upper cross beam; and the lower cross beam is supported between the two main plates and is positioned at the lower ends of the main plates.

In some of these embodiments, the main plate includes first board and second board that interconnect, the first board is located the lower part of main plate, the contained angle between first board and the second board is the acute angle, the lower surface of first board includes the plane that connects gradually and the inclined plane, the plane is located the bottom of first board.

In some embodiments, the upper beam is provided with a hinge seat, and the lifting portion is hinged to the hinge seat.

In some embodiments, the frame further comprises a transfer shaft, and the transfer shaft passes through the hinge seats and is respectively connected with the two main plates.

In some of these embodiments, the lower cross-member is provided with a hook portion for connection to a hoisting winch.

In some embodiments, the connecting member is a blocking frame, the blocking frame includes a connecting portion and an abutting portion perpendicular to the connecting portion, the connecting portion is connected to the frame, and the abutting portion penetrates through the frame and is used for abutting against a top surface of a base of the hydraulic support.

In some embodiments, the connecting member is a connecting rod, and the connecting rod penetrates through the frame and is used for abutting against the top surface of the base of the hydraulic support.

In some embodiments, the fixing portion is provided with an angle fitting frame, the fixing portion is hinged to the angle fitting frame, the angle fitting frame includes a first matching surface and a second matching surface which are perpendicular to each other, and the first matching surface and the second matching surface are used for abutting against a base of the hydraulic support.

The embodiment of the second aspect of the application provides a trolley which comprises two trolleys of any one of the above, wherein the two trolleys are used for being fixed on a base of a hydraulic support and are symmetrically arranged at two ends of the hydraulic support.

The above technical scheme of this application has following advantage:

1. through the articulated shaft, connecting piece and elevating gear's cooperation, make the trailer according to can rely on self function to drop hydraulic support subaerial, can also rely on self function to support the hydraulic support that is located on the rail, realize the transportation once more, compare with the operation flow of traditional hydraulic support removal of home and fall the face, foretell trailer just omits hydraulic support and unloads, hydraulic support remote haulage, process flows such as hydraulic support loading, it changes complicated hydraulic support removal of home and falls the face work into simple work relatively, make the operation mode of colliery hydraulic support's installation work or withdrawal work in the pit obtain optimizing.

2. The base of the hydraulic support is supported by the supporting vehicle, namely the supporting vehicle is positioned at the bottom of the base of the hydraulic support, so that the distance between the bottom surface of the hydraulic support and the top surface of the steel rail tends to be closest, the gravity center of the hydraulic support with a large appearance is reduced, the swinging amount of the hydraulic support in the running process on the steel rail can be reduced, and the potential safety hazard of the hydraulic support in the transportation process in a roadway is reduced.

3. The hydraulic support carrying equipment for the underground fully mechanized mining working face does not need to be configured by moving the carrier, and the hydraulic support mounting equipment, the fully mechanized mining hydraulic support withdrawing device, the shovel type support carrier, the hydraulic support hoisting device, the hydraulic support mounting forklift and the like, so that a large amount of equipment investment can be saved correspondingly. In addition, the process is less by using the trailer to carry out the moving and the surface reversing, the hydraulic support bracket can be conveyed to the installation position by the steel rail which is laid in place, and the auxiliary working time is correspondingly shortened, so that the construction period of installing or withdrawing the hydraulic support bracket is shortened, and the cost of moving and the surface reversing is reduced.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration only and are not necessarily drawn to scale or quantity with respect to the actual product. Wherein:

FIG. 1 is a schematic diagram of a structure of a trailer according to the present application;

FIG. 2 is a schematic structural view of another perspective of the present invention;

FIG. 3 is a schematic structural view of a state of use of the trailer according to the present application;

FIG. 4 is a schematic structural view of a vehicle frame according to the present application;

FIG. 5 is a schematic view of another perspective construction of the vehicle frame of the present application.

Wherein, the correspondence between the reference numbers and the part names of fig. 1 to 5 is:

the frame 10, the main plate 11, the first plate 111, the second plate 112, the upper cross beam 12, the lower cross beam 13, the inclined plane 14, the adapter shaft 15, the hook part 16, the wheel set 20, the hinge shaft 30, the blocking frame 40, the lifting device 50, the hinge seat 60, the corner attaching frame 70, the trailer 100 and the hydraulic support 200.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The following discussion provides a number of embodiments of the application. While each embodiment represents a single combination of applications, the various embodiments of the disclosure may be substituted or combined in any combination, and thus, the disclosure is intended to include all possible combinations of the same and/or different embodiments of what is described. Thus, if one embodiment comprises A, B, C and another embodiment comprises a combination of B and D, then this application should also be considered to comprise an embodiment that comprises A, B, C, D in all other possible combinations, although this embodiment may not be explicitly recited in the text below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

As shown in fig. 1 to 3, an embodiment of the first aspect of the present application provides a cart 100 for fixing on a base of a hydraulic support 200, including: frame 10, wheel group 20, articulated shaft 30, connecting piece and elevating gear 50.

Wheel set 20 is disposed at the bottom of frame 10 and is rotatable relative to frame 10. The wheel set 20 comprises a wheel, a bearing, a gland and an axle, wherein the bearing is assembled in the wheel, and two ends of the axle penetrate through the inner ring of the bearing and are fixedly connected with the frame 10.

The hinge shaft 30 is fixed to the frame 10 and located above the wheel set 20, and the hinge shaft 30 is used for being connected to the base of the hydraulic bracket 200 and can rotate relative to the base of the hydraulic bracket 200.

The connector is fixed to the frame 10 for connection with the base of the hydraulic bracket 200, and is located above the hinge shaft 30.

The lifting device 50 includes a fixing portion and a lifting portion, the lifting portion can be extended out or hidden in the fixing portion, the lifting portion is connected with the top of the frame 10, and the fixing portion is used for abutting against the base of the hydraulic support 200. The lifting device 50 is a jack, the lifting part is a piston rod, and the fixing part is a hydraulic cylinder.

Wherein, the frame 10 rotates relative to the base of the hydraulic bracket 200 through the hinge shaft 30, so that the connecting piece is pressed against the base of the hydraulic bracket 200 or separated from the base of the hydraulic bracket 200.

The application provides a trailer 100, through articulated shaft 30, the cooperation of connecting piece and elevating gear 50, make trailer 100 according to can falling hydraulic support 200 subaerial by self function, can also rely on self function to support the hydraulic support 200 that is located on the rail, realize transporting once more, compare with the operation flow that traditional hydraulic support 200 moved the face of falling, foretell trailer 100 just omits hydraulic support 200 and unloads, hydraulic support 200 long distance haul, hydraulic support 200 processes such as loading, it changes complicated hydraulic support 200 work of falling the face into simple work relatively to move, make the operation mode of installation work or withdrawal work of colliery hydraulic support 200 in the pit obtain optimizing. The base of the hydraulic support 200 supported by the trailer 100, namely the trailer 100 is positioned at the bottom of the base of the hydraulic support 200, so that the distance between the bottom surface of the hydraulic support 200 and the top surface of a steel rail tends to be nearest, the gravity center of the hydraulic support 200 with a large appearance is lowered, the swinging amount of the hydraulic support 200 in the running process on the steel rail can be reduced, and the potential safety hazard of the hydraulic support 200 in the transportation process in a roadway is reduced. By using the supporting vehicle 100 to move the underground fully mechanized coal mining face, special underground fully mechanized coal mining face hydraulic support 200 carrying equipment such as hydraulic support 200 mounting equipment, fully mechanized coal mining hydraulic support 200 withdrawing devices, shovel type support carriers, hydraulic support 200 hoisting devices and hydraulic support 200 mounting forklifts is not required to be configured, and accordingly, a large amount of equipment investment can be saved. In addition, the process is less by using the trailer 100 to carry the hydraulic support 200 to the installation position, and the auxiliary working time is correspondingly shortened by using the steel rails laid in place to carry the hydraulic support 200 to the installation position, so that the construction period for installing or withdrawing the hydraulic support 200 is shortened, and the cost for carrying the surface is reduced.

As shown in fig. 4 and 5, in one embodiment of the present application, the vehicle frame 10 includes: two main plates 11, an upper cross beam 12 and a lower cross beam 13.

The bottom of the main plate 11 has an inclined surface 14.

The upper beam 12 is supported between the two main plates 11 and is located at the upper end of the main plates 11, and the elevating part is connected to the upper beam 12.

The lower cross member 13 is supported between the two main plates 11 and is located at the lower end of the main plates 11.

In an embodiment of the present application, the main board 11 includes a first board 111 and a second board 112 connected to each other, the first board 111 is located at a lower portion of the main board 11, an included angle between the first board 111 and the second board 112 is an acute angle, a lower surface of the first board 111 includes a plane and an inclined surface 14 connected in sequence, and the plane is located at a bottom of the first board 111.

The arrangement of the inclined surface 14 ensures that the frame 10 can incline, ensures that the frame 10 has an avoiding space, and ensures that the frame 10 can incline relative to the base, thereby enabling the articulated shaft 30 to be connected with the base of the hydraulic support 200, then applying external force to the frame 10 to enable the frame 10 to jack up the base of the hydraulic support 200, then installing the connecting piece on the frame 10, removing the external force, enabling the base to move downwards under the action of self gravity, driving the frame 10 to rotate relative to the base of the hydraulic support 200 through the articulated shaft 30, enabling the connecting piece and the lifting device 50 to be pressed on the base of the hydraulic support 200, and completing the installation of the trailer 100. In addition, the frame 10 with the structure is simple in structure and easy to produce and manufacture under the condition that the requirement of use strength is met. The upper cross member 12 and the lower cross member 13 ensure the overall strength of the vehicle frame 10, thereby ensuring the use strength of the vehicle frame 10.

As shown in fig. 4 and 5, in one embodiment of the present application, the first plate 111 and the second plate 112 are a unitary structure. On one hand, the connection strength between the first board 111 and the second board 112 is ensured, so that the probability of fracture between the first board 111 and the second board 112 is reduced, and the use reliability of the main board 11 is ensured. On the other hand, the first plate 111 and the second plate 112 can be manufactured by an integral casting process, so that the main plate 11 can be produced in batch, the production efficiency of the product is improved, and the production and manufacturing cost of the product is reduced. In addition, the connection between the first board 111 and the second board 112 is in arc transition, so that the stress concentration caused by a sharp corner between the first board 111 and the second board 112 is avoided, the probability of fracture between the first board 111 and the second board 112 is reduced, and the use reliability of the main board 11 is ensured.

As shown in fig. 4 and 5, in an embodiment of the present application, the upper beam 12 is provided with a hinge seat 60, and the elevating portion is hinged to the hinge seat 60. In one embodiment of the present application, the frame 10 further includes a joint shaft 15, and the joint shaft 15 passes through the hinge base 60 and is connected to the two main plates 11 respectively.

In the process that the lifting part is extended or hidden from the fixed part, the frame 10 rotates relative to the base of the hydraulic bracket 200, so that the angle between the lifting device 50 and the upper beam 12 is also changed, and the lifting part is hinged with the hinge base 60, so that the lifting part can rotate relative to the upper beam 12 along with the movement of the lifting part.

As shown in fig. 1 and 2, in one embodiment of the application, a hook portion 16 is provided on the lower beam 13, and the hook portion 16 is used for connecting with a lifting winch.

The hook of the hoisting winch may be connected to the pallet 100 via the hook portion 16, so that the hoisting winch may transport an articulated hydraulic support 200 and the pallet 100 along an inclined mine roadway to the underground roadway. The hook part 16 is positioned in the middle of the lower cross beam 13, so that the uniformity of the overall stress of the frame 10 is ensured. The hook portion 16 is located on the lower cross beam 13 so that the stress point of the lifting winch and the trailer 100 is located at the lower part of the trailer 100.

As shown in fig. 1 and 2, in one embodiment of the present application, the connecting member is a blocking frame 40, and the blocking frame 40 includes a connecting portion and an abutting portion perpendicular to the connecting portion, the connecting portion is connected to the frame 10, and the abutting portion penetrates through the frame 10 and is configured to abut against a top surface of a base of the hydraulic bracket 200.

After external force is applied to the frame 10 to enable the frame 10 to jack up the base of the hydraulic support 200, the blocking and connecting frames 40 are respectively installed on two sides of the frame 10, and the specific installation process of the blocking and connecting frames 40 is as follows: the abutting portion is inserted through the connecting hole of the frame 10 and protruded out of the frame 10, and then the connecting portion is locked with the frame 10 by a screw, so that the catch frame 40 is fixedly connected with the frame 10. After the two blocking and connecting frames 40 are fixed, the external force is removed, the base moves downwards under the action of self gravity, the frame 10 is driven to rotate relative to the base of the hydraulic support 200 through the hinge shaft 30, the abutting part is pressed on the base of the hydraulic support 200, and therefore the fixed connection of the frame 10 and the base of the hydraulic support 200 is completed.

As shown in fig. 4 and 5, in a specific embodiment of the present application, the connecting hole on the frame 10 is rectangular, and the abutting portion is a rectangular block, which ensures surface contact between the abutting portion and the base of the hydraulic bracket 200, i.e. ensures a large connecting area between the abutting portion and the base of the hydraulic bracket 200, thereby ensuring the connecting strength between the abutting portion and the base of the hydraulic bracket 200.

In one embodiment of the application, the connecting piece is a connecting rod, and the connecting rod is used for abutting against the top surface of the base of the hydraulic support after penetrating through the frame.

Exert external force to the frame and make the frame with hydraulic support's base jack-up back, pass the connecting hole on the frame both sides respectively with the connecting rod to with the both sides fixed connection of frame respectively, remove external force behind the fixed connecting rod, the base is downstream under the effect of self gravity, drive the frame and rotate for hydraulic support's base through the articulated shaft, make the connecting rod support and press on hydraulic support's base, thereby accomplish the fixed connection of frame and hydraulic support's base.

As shown in fig. 4 and 5, in an embodiment of the present application, the connecting hole of the frame 10 is rectangular, and the connecting rod is a rectangular rod body, so that a surface contact between the connecting rod and the base of the hydraulic bracket 200 is ensured, that is, a large connecting area between the connecting rod and the base of the hydraulic bracket 200 is ensured, thereby ensuring a connection strength between the connecting rod and the base of the hydraulic bracket 200.

As shown in fig. 1 to 3, in an embodiment of the present application, an angle bracket 70 is disposed on the fixing portion, the fixing portion is hinged to the angle bracket 70, the angle bracket 70 includes a first mating surface and a second mating surface perpendicular to each other, and the first mating surface and the second mating surface are used for abutting against a base of the hydraulic bracket 200.

The setting of angle bracket 70 has guaranteed that great area of contact has between fixed part and hydraulic support 200's the base, make the better support of elevating gear 50 on hydraulic support 200's base, in addition, the setting of first fitting surface and second fitting surface makes angle bracket 70 support the back on hydraulic support 200's base, receive the holding power of two directions, thereby avoided angle bracket 70's removal and rock, make angle bracket 70 firmly fix on hydraulic support 200's base, and then guaranteed the stability when elevating gear 50 exerts the holding power to frame 10.

As shown in fig. 1 to 3, in an embodiment of the present application, during the process that the lifting part is extended or hidden in the fixing part, the frame 10 rotates relative to the base of the hydraulic bracket 200, so that the angle between the lifting device 50 and the base of the hydraulic bracket 200 also changes, and the fixing part is hinged to the corner attaching bracket 70, so that the fixing part can rotate relative to the corner attaching bracket 70 along with the movement of the lifting part.

The operation method of the trailer provided by the application is as follows:

the hydraulic support 200 is lifted to a designated height above a ground steel rail by a crane, two trolleys 100 are pushed to two ends of a base of the hydraulic support 200 along the steel rail, a connecting hole on the vehicle frame 10 is concentric with a key-shaped hoisting hole on the base of the hydraulic support 200, and at the moment, the bottom surface of a square hole on the vehicle frame 10 is also positioned on the same plane with the top surface of the base of the hydraulic support 200. Then, the hinge shaft 30 is fitted into the coupling hole such that one end of the hinge shaft 30 is inserted into the key-shaped hanging hole, and the hinge shaft 30 is fixedly coupled to the frame 10 by the first bolt, thereby hinging the cart 100 to one end of the base of the hydraulic bracket 200 via the hinge shaft 30. The catch frame 40 is fitted into the square hole, the abutting portion of the catch frame 40 is positioned above the top surface of the base of the hydraulic bracket 200, and the connecting portion of the catch frame 40 is fixed to the frame 10 by a second bolt. Then the crane is instructed to slowly drop the lifting hook, the hydraulic support 200 sinks under the action of the dead weight, the frame 10 is driven to rotate around the hinged shaft 30, the abutting portion is enabled to be close to the top surface of the base of the hydraulic support 200 until the abutting portion firmly abuts against the top surface of the base of the hydraulic support 200, the hydraulic support 200 is fixedly clamped between the two trolleys 100 in a hanging mode, the trolleys 100 are connected with the hook head of the lifting winch through the pin shaft, and the hydraulic support 200 can be conveyed to an underground roadway along the inclined mine roadway by the lifting winch.

After the hydraulic support 200 enters the designated installation position of the fully mechanized mining face, a steel plate is laid below the hydraulic support 200, the jack is connected with an operating valve in the fully mechanized mining face through a high-pressure rubber pipe, an emulsion pump in the fully mechanized mining face is utilized to drive a piston rod of the jack to extend outwards, a first matching surface of an angle bracket 70 connected to one end of the piston rod of the jack is abutted against the top surface of a base of the hydraulic support 200, a second matching surface of the angle bracket is abutted against a vertical surface of the base of the hydraulic support 200, the abutting part of a blocking bracket 40 is separated from the top surface of the base of the hydraulic support 200, then a second bolt and the blocking bracket 40 are dismounted, the operating valve is operated again, the piston rod of the jack is slowly retracted, the hydraulic support 200 sinks onto the steel plate under the action of self weight, finally, the first bolt and a hinge shaft 30 are dismounted, and the trailer 100 can be pushed away from the hydraulic support 200, and (3) pulling the hydraulic support 200 on the steel plate to a specified position by using a winch in the fully mechanized mining face, and completing the unloading and mounting work of the hydraulic support 200.

When the hydraulic support 200 is retracted, a steel plate is laid above the steel rail, the hydraulic support 200 is pulled onto the steel plate, and the two trolleys 100 are pushed to the two ends of the base of the hydraulic support 200 along the steel rail, so that the connecting hole on the frame 10 is concentric with the key-shaped hoisting hole on the base of the hydraulic support 200. Then, the hinge shaft 30 is fitted into the coupling hole such that one end of the hinge shaft 30 is inserted into the key-shaped hanging hole, and the hinge shaft 30 is fixedly coupled to the frame 10 by the first bolt, thereby hinging the cart 100 to one end of the base of the hydraulic bracket 200 via the hinge shaft 30. Operating the operating valve to extend the piston rod of the jack, making the angle fitting frame 70 tightly contact with the base of the hydraulic support 200 and then pushing the upper cross beam 12 in the frame 10 to swing towards the direction far away from the base of the hydraulic support 200, because the trailer 100 is hinged in the key-shaped hoisting hole of the base of the hydraulic support 200 through the hinge shaft 30, when the upper cross beam 12 swings towards the direction far away from the base of the hydraulic support 200, driving the wheel set 20 to swing around the hinge shaft 30 around the contact surface of the wheel set 20 and the steel rail as a fulcrum towards the direction close to the base of the hydraulic support 200 to hold up the hydraulic support 200, when the bottom surface of the square hole is also in the same plane with the top surface of the base of the hydraulic support 200, placing the blocking frame 40 in the square hole, making the abutting part of the blocking frame 40 be positioned above the top surface of the base of the hydraulic support 200, and fixedly connecting part of the blocking frame 40 on the frame 10 by using a second bolt, then, the piston rod of the jack is retracted, the hydraulic support 200 sinks under the action of the dead weight, the frame 10 is driven to rotate around the hinge shaft 30, the abutting portion is close to the top surface of the base of the hydraulic support 200 until the abutting portion firmly abuts against the top surface of the base of the hydraulic support 200, the hydraulic support 200 is clamped between the two trolleys 100 in a hanging mode, the trolleys 100 are connected with the hook head of the lifting winch through the pin shaft, and the hydraulic support 200 can be lifted to the ground through the winch.

As shown in fig. 3, the embodiment of the second aspect of the present application provides a trolley comprising two trolleys of any one of the above, the two trolleys are used for being fixed on the base of the hydraulic support and are symmetrically arranged at two ends of the hydraulic support.

Embodiments of the second aspect of the present application provide a tow vehicle as it comprises a tow vehicle as provided in any of the embodiments of the first aspect. Therefore, the tote provided by the embodiments of the present application has all the advantages of the tote provided by any one of the embodiments of the first aspect, which are not listed here.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application. In this application, the term "plurality" means two or more unless explicitly defined otherwise. In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.