阅读说明：本技术 一种跳板式尾门用自动锁紧装置 (Automatic locking device for springboard type tail gate ) 是由 尹申辉 刘国忠 樊小舟 陈明明 张文 高勋武 杨丽湘 汤钧皓 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种跳板式尾门用自动锁紧装置,涉及特种车辆的锁紧装置技术领域,解决现有锁紧装置密封不严,拉紧可靠性差的技术问题,包括动力机构、锁紧机构、辅助机构,所述锁紧机构一端与动力机构连接,另一端与辅助机构连接,所述锁紧机构由套筒、锁舌、锁座组成,该套筒内设置有锁舌,锁舌的一端与动力机构连接,另一端与锁座的方形孔对应,所述锁座与辅助机构连接；在启动特种车辆跳板式尾门的液压控制系统后,锁舌会自动从套筒伸出进入锁座,从而实现门的自动锁紧；本发明可自动完成特种车辆跳板式尾门的锁紧,安装方便,成本低廉,可靠性高,解决了跳板式尾门的拉紧效果不佳,尾门顶部容易出现缝隙,密封不严,拉紧可靠性差等问题。(The invention discloses an automatic locking device for a springboard type tail gate, which relates to the technical field of locking devices of special vehicles and solves the technical problems of poor sealing and poor tensioning reliability of the existing locking device; after a hydraulic control system of the springboard type tail gate of the special vehicle is started, the spring bolt can automatically extend out of the sleeve and enter the lock seat, so that the automatic locking of the gate is realized; the invention can automatically complete the locking of the springboard type tail gate of the special vehicle, has convenient installation, low cost and high reliability, and solves the problems of poor tensioning effect of the springboard type tail gate, easy occurrence of gaps at the top of the tail gate, poor sealing, poor tensioning reliability and the like.)

1. The utility model provides a springboard formula is automatic locking device for tail-gate, includes power unit (1), locking mechanism (2), complementary unit (3), its characterized in that, locking mechanism (2) one end is connected with power unit (1), and the other end is connected with complementary unit (3), locking mechanism (2) comprise sleeve (20), spring bolt (21), lock seat (22), be provided with spring bolt (21) in sleeve (20), the one end and the power unit (1) of this spring bolt (21) are connected, and the other end corresponds with quad slit (222) of lock seat (22), lock seat (22) are connected with complementary unit (3).

2. The automatic locking device for the springboard type tail gate according to claim 1, wherein the power mechanism (1) comprises a hydraulic control system (4), a first nut (11), a second elastic washer (12), a third flat washer (13), a second bolt (14), a cylinder mounting seat (15), a cylinder (16), an oil pipe (17), a second nut (18) and a piston rod (19), the cylinder (16) is communicated with the hydraulic control system (4) through the oil pipe (17) and the second nut (18), the cylinder mounting seat (15) is connected with one piston-free end of the cylinder (16) through the second bolt (14) and the first nut (11), and a boss and a pin hole (28) are formed in the end of the piston rod (19).

3. The automatic locking device for the springboard type tail gate according to claim 2, wherein the second bolt (14) penetrates through the piston-free end of the oil cylinder (16), is sleeved with a third flat washer (13) and a second elastic washer (12) in sequence, and is fastened by a first nut (11).

4. The automatic locking device for the springboard type tail gate as claimed in claim 2, wherein the sleeve (20) is internally provided with a copper sleeve (23), and one side of the sleeve (20) is provided with a strip groove (24).

5. The automatic locking device for the springboard type tail gate according to claim 4, wherein one end of the locking tongue (21) is provided with a groove (27) and a pin hole (28) which are matched with a boss and a pin hole (28) of a piston rod (19) of the oil cylinder (16), and the other end is provided with a wedge-shaped inclined plane (26) and a small wedge-shaped inclined plane body (25) which is matched with the groove (24) of the sleeve (20).

6. The automatic locking device for the springboard type tail gate according to claim 5, wherein the lock base (22) is provided with threaded holes (221) at the periphery, the middle of the lock base (22) is provided with a square hole (222), and the size of the square hole (222) corresponds to the size of the wedge-shaped inclined plane (26).

7. The automatic locking device for the springboard type tailgate according to claim 1, characterized in that the auxiliary mechanism (3) comprises a base and an adjusting pad, the adjusting pad is connected with the base through a first bolt (10) sleeved with a second flat washer (8) and a first elastic washer (9).

8. The automatic locking device for the springboard type tail gate as claimed in claim 2, wherein the boss of the piston rod (19) is inserted into the groove (27) of the bolt (21), and after aligning with the pin hole (28), the pin shaft (6) is inserted, and the first flat washer (5) and the split pin (7) are used for locking connection.

Technical Field

The invention relates to the technical field of locking devices of special vehicles, in particular to the technical field of an automatic locking device for a springboard type tail gate.

Background

The locking device is an important component of a special vehicle door and is used for locking the door in a closed state to ensure the sealing property of the door; the springboard type tail gate is usually a steel rear gate door which is opened downwards and is mostly driven by a hydraulic system. The weight of some springboard type tail doors is more than 300 kilograms, and due to space limitation and vehicle arrangement requirements, a control actuating mechanism of the springboard type tail doors is often close to a hinge point, the force arm is small, the tensioning effect of the tail doors is poor, gaps are easy to appear at the tops of the tail doors, the sealing is not tight, and the tensioning reliability is poor.

Disclosure of Invention

The invention aims to: in order to solve the technical problem, the invention provides an automatic locking device for a springboard type tail door.

The technical scheme adopted by the invention is as follows: an automatic locking device for a springboard type tail gate comprises a power mechanism, a locking mechanism and an auxiliary mechanism, wherein one end of the locking mechanism is connected with the power mechanism, the other end of the locking mechanism is connected with the auxiliary mechanism, the locking mechanism comprises a sleeve, a lock tongue and a lock base, the lock tongue is arranged in the sleeve, one end of the lock tongue is connected with the power mechanism, the other end of the lock tongue corresponds to a square hole of the lock base, and the lock base is connected with the auxiliary mechanism; the power mechanism is connected with a hydraulic control system of the springboard type tail gate, the hydraulic control system provides execution power, and the locking mechanism transmits the hydraulic power of the power mechanism to complete locking and unlocking actions; the auxiliary mechanism is provided with a locking mechanism mounting structure, has the function of adjusting the height of the auxiliary mechanism and helps the locking mechanism to be adjusted to a proper position; when the automatic locking device is used, the locking mechanism can obtain the power provided by the hydraulic control system of the special vehicle through the power mechanism and complete the automatic locking and unlocking actions of the springboard type tail gate only by starting the hydraulic control system of the special vehicle.

The power mechanism comprises a hydraulic control system, a first nut, a second elastic washer, a third flat washer, a second bolt, an oil cylinder mounting seat, an oil cylinder, an oil pipe, a second nut and a piston rod, the oil cylinder is communicated with the hydraulic control system through the oil pipe and the second nut, the oil cylinder mounting seat is connected with one end, without a piston, of the oil cylinder through the second bolt and the first nut, and a boss and a pin hole are formed in the end portion of the piston rod.

The second bolt penetrates out of the piston-free end of the oil cylinder and is fastened by a first nut after being sequentially sleeved with a third flat gasket and a second elastic gasket.

The sleeve is internally provided with a copper sleeve, one side of the sleeve is provided with a strip groove, and the copper sleeve plays a role of a self-lubricating bearing.

One end of the lock tongue is provided with a groove and a pin hole which are matched with the boss and the pin hole of the oil cylinder piston rod, and the other end of the lock tongue is provided with a wedge-shaped inclined plane and a small wedge-shaped inclined plane body matched with the sleeve groove in size.

Threaded holes are formed in the periphery of the lock seat, a square hole is formed in the middle of the lock seat, and the size of the square hole corresponds to that of the wedge-shaped inclined plane.

The auxiliary mechanism comprises a base and an adjusting pad, wherein the adjusting pad is connected with the base through a first bolt sleeved with a second flat gasket and a first elastic gasket.

The boss of the piston rod is inserted into the groove of the lock tongue, the pin shaft is inserted after aligning the pin hole, and the first flat washer and the split pin are used for locking connection.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

the locking device provided by the invention has the advantages of simple movement relationship among internal mechanisms, strong environmental adaptation, convenience in installation and high reliability, can be linked with a springboard type tail gate hydraulic system to automatically complete locking and loosening actions, and solves the problems of poor tensioning effect of the springboard type tail gate, easiness in occurrence of gaps at the top of the tail gate, poor sealing, poor tensioning reliability and the like.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the locking device of the present invention;

FIG. 2 is a schematic view of the connection structure between the power mechanism and the locking mechanism according to the present invention;

FIG. 3 is a schematic view of the connection structure of the locking mechanism and the auxiliary mechanism of the present invention;

FIG. 4 is a schematic view of the power mechanism of the present invention;

FIG. 5 is a schematic view of the locking device of the present invention;

FIG. 6 is a front view of the sleeve of the present invention;

FIG. 7 is a schematic bottom view of the sleeve of the present invention;

FIG. 8 is a schematic right view of the sleeve of the present invention;

fig. 9 is a schematic view of the latch bolt of the present invention;

FIG. 10 is a front view of the lock base of the present invention;

FIG. 11 is a schematic top view of the lock base of the present invention;

FIG. 12 is a left side view of the lock base of the present invention;

labeled as: 1-power mechanism, 2-locking mechanism, 3-auxiliary mechanism, 4-hydraulic control system, 5-first flat washer, 6-pin shaft, 7-split pin, 8-second flat washer, 9-first elastic washer, 10-first bolt, 11-first nut, 12-second elastic washer, 13-third flat washer, 14-second bolt, 15-cylinder mounting seat, 16-cylinder, 17-oil pipe, 18-second nut, 19-piston rod, 20-sleeve, 21-lock tongue, 22-lock seat, 221-threaded hole, 222-square hole, 23-copper sleeve, 24-strip groove, 25-small wedge-shaped inclined plane body, 26-wedge-shaped inclined plane, 27-groove and 28-pin hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.

Example 1

As shown in fig. 1-12, an automatic locking device for a springboard type tailgate comprises a power mechanism 1, a locking mechanism 2 and an auxiliary mechanism 3, wherein one end of the locking mechanism 2 is connected with the power mechanism 1, the other end is connected with the auxiliary mechanism 3, the locking mechanism 2 comprises a sleeve 20, a bolt 21 and a lock base 22, the bolt 21 is arranged in the sleeve 20, one end of the bolt 21 is connected with the power mechanism 1, the other end corresponds to a square hole 222 of the lock base 22, and the lock base 22 is connected with the auxiliary mechanism 3; the power mechanism 1 is connected with a hydraulic control system 4 of the springboard type tail gate, the hydraulic control system 4 provides execution power, and the locking mechanism 2 transmits the hydraulic power of the power mechanism 1 to complete locking and unlocking actions; the auxiliary mechanism 3 is provided with a structure for installing the locking mechanism 2, has the function of adjusting the height of the auxiliary mechanism and helps the locking mechanism 2 to be adjusted to a proper position; when the automatic locking device is used, the locking mechanism 2 can obtain power provided by the hydraulic control system 4 of the special vehicle through the power mechanism 1 and complete the automatic locking and unlocking actions of the springboard type tail gate only by starting the hydraulic control system 4 of the special vehicle.

The invention is composed of a power mechanism 1, a locking mechanism 2 and an auxiliary mechanism 3, as shown in the figure 1; the power mechanism 1 can be connected with the locking mechanism 2 through standard components such as a pin shaft 6, a cotter pin 7 and the like, as shown in the above fig. 2; the locking mechanism 2 may be connected to the auxiliary mechanism 3 by standard means such as bolts, as shown in fig. 3 above.

The locking mechanism 2 of the invention is composed of a sleeve 20, a bolt 21, a lock seat 22 and a sleeve reinforcing plate, as shown in the figure 5, wherein the sleeve 20, the bolt 21 and the lock seat 22 are main stressed parts of a locking device, and the materials of the sleeve, the bolt 21 and the lock seat 22 are high-strength alloy steel, thereby providing safety guarantee for the locking mechanism 2 to bear the huge pressure of the springboard type tail gate.

Example 2

On the basis of embodiment 1, the power mechanism 1 includes a hydraulic control system 4, a first nut 11, a second elastic washer 12, a third flat washer 13, a second bolt 14, a cylinder mounting seat 15, a cylinder 16, an oil pipe 17, a second nut 18, and a piston rod 19, the cylinder 16 is communicated with the hydraulic control system 4 through the oil pipe 17 and the second nut 18, the cylinder mounting seat 15 is connected with one piston-free end of the cylinder 16 through the second bolt 14 and the first nut 11, and a boss and a pin hole 28 are arranged at an end of the piston rod 19.

The power mechanism 1 of the invention is composed of parts such as an oil cylinder 16, an oil cylinder mounting seat 15, an oil pipe 17 and the like, and as shown in the figure 4, the functions and the structures of the main parts are as follows:

1. the cylinder mounting seat 15 functions as a platform for mounting the power mechanism 1, and is provided with a structure connected with the cylinder 16, which may be a threaded hole 221.

2. The oil cylinder 16 has the functions of realizing the connection between the power mechanism 1 and the actuating mechanism, the connection between the power mechanism 1 and the hydraulic control system 4 and realizing the automatic locking function of the locking device; one end of the oil cylinder 16 without the piston is provided with a structure matched and connected with the oil cylinder mounting seat 15 to help the oil cylinder 16 to be mounted on a special vehicle; the outer end of a piston rod 19 of the oil cylinder 16 is provided with a pin hole 28, the pin hole 28 and the pin hole 28 at one end of the bolt 21 complete the connection between the power mechanism 1 and the actuating mechanism through a pin shaft 6, a cotter pin 7 and a first flat washer 5, and the connection of the oil cylinder 16 and the oil cylinder mounting seat 15 can ensure that the piston rod 19 of the oil cylinder 16 and the bolt 21 are positioned on the same horizontal plane, prevent the part from being locally stressed greatly due to the up-and-down swing of the piston rod, and therefore, the service life of the locking device can be effectively prolonged; the oil cylinder 16 is provided with an oil inlet and an oil outlet, and the connection between the power mechanism 1 and the hydraulic control system 4 is completed through standard parts such as nuts and the like and an oil pipe 17; after the hydraulic control system 4 is started, hydraulic oil enters the oil cylinder 16 through the oil pipe 17, at this time, under the action of the hydraulic oil, the piston rod 19 of the oil cylinder 16 extends out and transmits power to the locking mechanism 2 to enable the locking device to automatically complete locking action, and therefore the process that the locking device completes locking action is a full-automatic process.

Example 3

On the basis of embodiment 2, the second bolt 14 penetrates through the piston-free end of the oil cylinder 16, and is fastened by the first nut 11 after being sequentially sleeved with the third flat washer 13 and the second elastic washer 12.

Example 4

On the basis of embodiment 2, a copper sleeve 23 is arranged inside the sleeve 20, a strip groove 24 is formed in one side of the sleeve 20, and the copper sleeve 23 plays a role of a self-lubricating bearing; the function of the sleeve 20 is to provide a guarantee for the locking device to move linearly; the copper bush 23 is arranged on the inner side of the sleeve 20, and the copper bush 23 has good wear resistance, smaller friction coefficient and proper elastoplasticity and can play a role of a self-lubricating bearing; one side of the sleeve 20 is provided with a strip groove 24, and in the process of completing the locking action of the locking device, the small wedge-shaped inclined plane 25 of the lock tongue 21 can only perform linear translation in the strip groove 24, so that the matching relationship between the strip groove 24 of the sleeve 20 and the small wedge-shaped inclined plane 25 of the lock tongue 21 can ensure that the locking device power mechanism 1 and the locking mechanism 2 can keep performing linear motion even if being worn after being used for a long time, thereby effectively prolonging the service life of the locking device, and the structure of the sleeve 20 is shown in fig. 6-8.

Example 5

On the basis of embodiment 4, one end of the lock tongue 21 is provided with a groove 27 and a pin hole 28 which are matched with a boss and a pin hole 28 of the piston rod 19 of the oil cylinder 16, and the other end is provided with a wedge-shaped inclined surface 26 and a small wedge-shaped inclined surface 26 body 25 matched with the groove 24 of the sleeve 20 in size.

Example 6

On the basis of embodiment 5, the periphery of the lock seat 22 is provided with a threaded hole 221, the middle of the lock seat 22 is provided with a square hole 222, and the size of the square hole 222 corresponds to the wedge-shaped inclined surface 26; the bolt 21 and the lock seat 22 have the functions of realizing the locking and unlocking processes of the locking device; one end of the bolt 21 is provided with a pin hole 28 matched with the pin hole 28 of the piston rod 19 of the oil cylinder 16 of the power mechanism 1, and the bolt is used for completing the connection between the power mechanism 1 and the locking mechanism 2; the other end of the bolt 21 is provided with a wedge-shaped inclined surface 26 with a specific angle, and the locking device realizes the locking and unlocking functions of the locking device by means of the process that the wedge-shaped inclined surface 26 enters and extends out of the square hole 222 of the lock base 22; the square hole 222 of the lock base 22 is provided with a chamfer, so that the pressure of the wedge-shaped inclined surface 26 of the bolt 21 entering the square hole 222 of the lock base 22 can be reduced, and the service life of the locking device is prolonged; the bottom of the lock seat 22 is provided with a structure for connecting the locking device with the auxiliary device, and the structure can be 4 threaded through holes; in the locking process of the locking device, the bolt 21 can perform linear translation in the sleeve 20 and enter the lock holder 22 by the power provided by the power mechanism 1, in the process that the wedge-shaped inclined surface 26 of the bolt 21 gradually enters the square hole 222 of the lock holder 22, the bolt 21 can apply pressure to the sleeve 20 and enable the sleeve 20 to gradually press the jump board type tail gate, after the bolt completely enters the square hole 222 of the lock holder 22, the locking device locks the jump board type tail gate, the structure of the bolt 21 is shown in the above fig. 9, and the structure of the lock holder 22 is shown in the above fig. 10-12.

Example 7

On the basis of the embodiment 1, the auxiliary mechanism 3 comprises a base and an adjusting pad, wherein the adjusting pad is connected with the base through a first bolt 10 sleeved with a second flat washer 8 and a first elastic washer 9; the auxiliary mechanism 3 of the present invention is composed of a base and an adjusting pad, as shown in the rightmost side of fig. 1, the functions and structures of which are as follows:

1. the base has the function of providing a mounting platform for the locking mechanism 2; the base is installed at the inner side of the springboard type tail gate, the base is provided with a structure connected with a locking seat 22 of the locking mechanism 2, 4 threaded holes 221 are formed in the structure, and the locking mechanism 2 can be connected with the auxiliary mechanism 3 through standard parts such as bolts.

2. The adjusting pad has the function of adjusting the locking degree of the springboard type tail gate, and the installation position of the adjusting pad is between the base of the auxiliary mechanism 3 and the locking seat 22 of the locking mechanism 2; by increasing or reducing the number of the adjusting pads, the distance between the wedge-shaped inclined surface 26 of the bolt 21 and the square hole 222 of the lock base 22 on the horizontal plane can be adjusted, so that the compression size of the springboard type tail door rubber sealing strip is adjusted, and the actual effect of the locking device after locking can be adjusted.

Example 8

On the basis of embodiment 2, the boss of the piston rod 19 is inserted into the groove 27 of the bolt 21, aligned with the pin hole 28, inserted into the pin 6, and locked and connected by the first flat washer 5 and the split pin 7.

The automatic locking process of the locking device of the invention specifically comprises the following steps: starting a hydraulic control system 4 of the special vehicle, enabling hydraulic oil to enter the oil cylinder 16 from an oil inlet of the oil cylinder 16 through an oil pipe 17 to enable a piston rod 19 of the oil cylinder 16 to extend out, enabling the piston rod 19 of the oil cylinder 16 to transmit power to the bolt 21 at the moment, enabling the bolt 21 to perform linear translation after obtaining the power of the power mechanism 1, enabling the wedge-shaped inclined plane 26 of the bolt 21 to gradually enter the square hole 222 of the lock base 22 in the translation process of the bolt, and enabling the locking device to complete locking action and lock the springboard type tail gate after the wedge-shaped inclined plane 26 of the bolt 21 completely enters the square hole 222 of the lock base 22; the whole locking action process of the locking device is a full-automatic process, the movement relation is simple and easy to realize, the locking device is practical and convenient, and the performance of special vehicles can be fully improved.