阅读说明：本技术 一种防护装置及高空作业设备 (Protector and aerial working equipment ) 是由 李希平 刘国良 于 2020-12-08 设计创作，主要内容包括：本发明公开了一种防护装置及高空作业设备,包括支架和覆盖件,覆盖件的上侧与支架的上侧铰接,还包括下拉装置,下拉装置包括定滑轮、动滑轮、推杆和拉绳,定滑轮与覆盖件固定连接,动滑轮位于定滑轮上方,动滑轮与覆盖件滑动连接,拉绳的固定端绕过动滑轮与定滑轮连接,推杆的上端与动滑轮连接。将覆盖件从支架上开启之后,推杆和动滑轮在重力作用下向下移动,以使拉绳的拉手端垂下,从而便于操作人员拉动拉手端；当需要闭合覆盖件时,向下拉动拉手端,推杆的下端与支架相抵后,动滑轮上移,此时会带动拉绳的拉手端上移,以起到收纳拉绳的作用。(The invention discloses a protective device and high-altitude operation equipment, which comprise a support, a covering piece and a pull-down device, wherein the upper side of the covering piece is hinged with the upper side of the support, the pull-down device comprises a fixed pulley, a movable pulley, a push rod and a pull rope, the fixed pulley is fixedly connected with the covering piece, the movable pulley is positioned above the fixed pulley and is in sliding connection with the covering piece, the fixed end of the pull rope is connected with the fixed pulley by bypassing the movable pulley, and the upper end of the push rod is connected with the movable pulley. After the covering piece is opened from the bracket, the push rod and the movable pulley move downwards under the action of gravity to enable the pull handle end of the pull rope to hang down, so that an operator can pull the pull handle end conveniently; when the covering part needs to be closed, the handle end is pulled downwards, the lower end of the push rod is abutted to the support, the movable pulley moves upwards, the handle end of the pull rope can be driven to move upwards at the moment, and therefore the effect of containing the pull rope is achieved.)

1. The utility model provides a protection device, includes support (1) and covering (2), the upside of covering (2) with the upside of support (1) is articulated, its characterized in that, still includes pull-down device (4), pull-down device (4) include fixed pulley (403), movable pulley (404), push rod (407) and stay cord (401), fixed pulley (403) with covering (2) fixed connection, movable pulley (404) are located fixed pulley (403) top, movable pulley (404) with covering (2) sliding connection, the stiff end of stay cord (401) is walked around movable pulley (404) with fixed pulley (403) are connected, the upper end of push rod (407) with movable pulley (404) are connected, push rod (407) with movable pulley (404) make under the effect of gravity pull end (402) of stay cord (401) hang down, the handle end (402) of the pull rope (401) is pulled downwards, the covering part (2) moves downwards, and the lower end of the push rod (407) is abutted against the bracket (1) to push the movable pulley (404) to move upwards so as to drive the handle end (402) of the pull rope (401) to move upwards.

2. Guard device according to claim 1, characterized in that the pull-down device (4) further comprises a support plate (405), the support plate (405) is fixedly connected with the cover (2), a sliding slot (406) is provided on the support plate (405), the fixed pulley (403) is provided at the bottom of the support plate (405), and the movable pulley (404) is slidably connected with the sliding slot (406).

3. Guard according to claim 2, characterized in that the support plate (405) is fixedly connected to the inner side wall of the cover (2).

4. Guard according to claim 1, characterized in that the upper end of the push rod (407) is hinged with the movable pulley (404).

5. The protection device according to claim 1, characterized in that a limiting part (101) for abutting against the push rod (407) is arranged at the bottom of the bracket (1).

6. The protection device according to claim 1, wherein the upper part of the limiting part (101) and the lower end of the push rod (407) are respectively provided with a cushion block.

7. The guard of claim 1, further comprising an elastic member having both ends connected to the cover member and the movable pulley, respectively, the movable pulley moving downward by its gravity and the elastic force of the elastic member; the elastic piece is compressed and deformed after the push rod abuts against the support.

8. The guard of claim 7, wherein the resilient member is a spring, an upper end of the spring being connected to the cover, and a lower end of the spring being connected to the movable sheave.

9. Guard according to any of claims 1 to 8, characterized in that the pull-down device (4) comprises a plurality of said fixed pulleys (403) and a plurality of said movable pulleys (404), the pull rope (401) passing in turn around the fixed pulleys (403) and the movable pulleys (404).

10. An aerial work apparatus comprising a guard as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the field of engineering mechanical equipment, in particular to a protective device and aerial work equipment comprising the protective device.

Background

The power, hydraulic and electrical devices of the aerial work equipment are usually arranged in a closed protective device to prevent collision and rain, and in addition, to prevent the operator from being injured by touching the devices.

For ease of maintenance, the cover of the guard may be generally opened and closed. For medium and large-sized high-altitude operation equipment, after the covering piece is opened, the edge of the covering piece is located at a higher position, an operator stands on the ground and is difficult to touch the covering piece, and the operator needs to climb to a higher position by means of a foreign object to close the covering piece, so that the operation is inconvenient, and certain potential safety hazards exist.

Therefore, how to provide a protection device for facilitating the closing of the covering element by the operator is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

An object of the present invention is to provide a guard which effectively solves the problem of inconvenient closing of a covering member, etc., and another object is to provide an aerial work apparatus including the above guard.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a protection device, includes support and covering, the upside of covering with the upside of support is articulated, still includes the pull-down device, the pull-down device includes fixed pulley, movable pulley, push rod and stay cord, the fixed pulley with covering fixed connection, the movable pulley is located the fixed pulley top, the movable pulley with covering sliding connection, the stiff end of stay cord is walked around the movable pulley with the fixed pulley is connected, the upper end of push rod with the movable pulley is connected, the push rod with the movable pulley makes under the action of gravity the handle end of stay cord hangs down, stimulates downwards the handle end of stay cord, the covering moves down, the lower extreme of push rod with after the support offsets, promote the movable pulley shifts up to drive the handle end of stay cord shifts up.

Preferably, the pull-down device further comprises a supporting plate, the supporting plate is fixedly connected with the covering piece, a sliding groove is formed in the supporting plate, the fixed pulley is arranged at the bottom of the supporting plate, and the movable pulley is connected with the sliding groove in a sliding mode.

Preferably, the support plate is fixedly attached to an inner side wall of the cover.

Preferably, the upper end of the push rod is hinged with the movable pulley.

Preferably, the bottom of the bracket is provided with a limiting part which is used for abutting against the push rod.

Preferably, the upper part of the limiting part and the lower end of the push rod are respectively provided with a cushion block.

Preferably, the device further comprises an elastic part, two ends of the elastic part are respectively connected with the covering part and the movable pulley, and the movable pulley moves downwards under the action of the gravity of the movable pulley and the elastic force of the elastic part; the elastic piece is compressed and deformed after the push rod abuts against the support.

Preferably, the elastic member is a spring, the upper end of the spring is connected with the covering member, and the lower end of the spring is connected with the movable pulley.

Preferably, the pull-down device comprises a plurality of fixed pulleys and a plurality of movable pulleys, and the pull rope sequentially passes through the fixed pulleys and the movable pulleys.

An aerial work apparatus comprising a guard as claimed in any preceding claim.

Compared with the prior art, the technical scheme has the following advantages:

the invention provides a protective device and high-altitude operation equipment, which comprise a support and a covering piece, wherein the upper side of the covering piece is hinged with the upper side of the support, the protective device also comprises a pull-down device, the pull-down device comprises a fixed pulley, a movable pulley, a push rod and a pull rope, the fixed pulley is fixedly connected with the covering piece, the movable pulley is positioned above the fixed pulley and is in sliding connection with the covering piece, the fixed end of the pull rope is connected with the fixed pulley by bypassing the movable pulley, and the upper end of the push rod is connected with the movable pulley. After the covering piece is opened from the bracket, the push rod and the movable pulley move downwards under the action of gravity to enable the pull handle end of the pull rope to hang down, so that an operator can pull the pull handle end conveniently; when the covering part needs to be closed, the handle end is pulled downwards, the covering part moves downwards, after the lower end of the push rod is abutted to the support, the movable pulley is pushed upwards in an opposite mode, the handle end of the pull rope can be driven to move upwards at the moment, and therefore the effect of containing the pull rope is achieved. In addition, the pull-down device is of a pure mechanical structure, and a pull rope does not need to be pulled through a motor, so that the pull-down device is simple in structure and convenient to maintain.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a first embodiment of a protective device according to the present invention in a closed state;

FIG. 2 is a schematic diagram of the pull-down device of FIG. 1;

FIG. 3 is a schematic view of the first protective device in an open state;

FIG. 4 is a schematic diagram of the pull-down device of FIG. 3;

FIG. 5 is a schematic view of a guard having a plurality of fixed and movable pulleys in a closed position;

FIG. 6 is a schematic diagram of the pull-down device of FIG. 5;

FIG. 7 is a schematic view of a guard having a plurality of fixed and movable pulleys in an open position;

FIG. 8 is a schematic diagram of the pull-down device of FIG. 7;

FIG. 9 is a schematic illustration of a second embodiment of a shield apparatus according to the present invention in a closed position;

FIG. 10 is a schematic diagram of the pull-down device of FIG. 9;

FIG. 11 is a schematic view of a second type of guard in an open position;

FIG. 12 is a schematic diagram of the pull-down device of FIG. 11;

FIG. 13 is a schematic view of a second guard having a plurality of fixed and movable pulleys in a closed position;

FIG. 14 is a schematic diagram of the pull-down device of FIG. 13;

FIG. 15 is a schematic view of a second guard having a plurality of fixed and movable pulleys in an open position;

fig. 16 is a schematic structural diagram of the pull-down device in fig. 15.

The reference numbers are as follows:

1 is a bracket, 101 is a limiting part, 2 is a covering part, 3 is a rotating hinge, 4 is a pull-down device, 401 is a pull rope, 402 is a handle end, 403 is a fixed pulley, 404 is a movable pulley, 405 is a supporting plate, 406 is a sliding chute, 407 is a push rod, and 408 is a spring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1 to 4, fig. 1 is a schematic structural view of a protection device in a closed state according to a first embodiment of the present invention; FIG. 2 is a schematic diagram of the pull-down device of FIG. 1; FIG. 3 is a schematic view of the first protective device in an open state; fig. 4 is a schematic structural diagram of the pull-down device in fig. 3.

The invention provides a protection device, which comprises a support 1 and a covering part 2, wherein the upper side of the covering part 2 is hinged with the upper side of the support 1 through a rotating hinge 3, the protection device further comprises a pull-down device 4, the pull-down device 4 comprises a fixed pulley 403, a movable pulley 404, a push rod 407 and a pull rope 401, the fixed pulley 403 is fixedly connected with the covering part 2, the movable pulley 404 is positioned above the fixed pulley 403, the movable pulley 404 is connected with the covering part 2 in a sliding mode, the fixed end of the pull rope 401 bypasses the movable pulley 404 to be connected with the fixed pulley 403, and the upper end of the push rod 407 is connected with the movable pulley 404. After the cover 2 is opened from the stand 1, the push rod 407 and the movable pulley 404 move downward by gravity to hang down the pull end 402 of the pull rope 401, thereby facilitating the operator to pull the pull end 402; when the covering part 2 needs to be closed, the handle end 402 is pulled downwards, the covering part 2 moves downwards, after the lower end of the push rod 407 abuts against the support 1, the counter-pushing pulley 404 moves upwards, and the handle end 402 of the pull rope 401 is driven to move upwards so as to take in the pull rope 401. In addition, the pull-down device 4 is of a pure mechanical structure, and the pull rope 401 does not need to be pulled by a motor, so that the structure is simple, and the maintenance is convenient.

Further, the pull-down device 4 further comprises a support plate 405, wherein the support plate 405 is preferably located inside the cover 2, so that after closing the cover 2, the pull-down device 4 can be located inside a guard to protect the pull-down device 4. Furthermore, a support plate 405 is fixedly connected to the inner side wall of the cover 2, for example, by welding or fastening, a sliding groove 406 is provided on the support plate 405, a fixed pulley 403 is provided at the bottom of the support plate 405, and a movable pulley 404 is slidably connected to the sliding groove 406, wherein the support plate 405 is preferably vertically provided on the slat inside the cover 2, and the sliding groove 406 extends along the length direction of the slat.

In order to facilitate the push rod 407 to drive the movable pulley 404 to move downwards and the lower end of the push rod 407 to contact with the bracket 1, the upper end of the push rod 407 is hinged to the movable pulley 404, i.e. the push rod 407 can be always in a vertical state after the cover 2 is opened.

In addition, in order to facilitate the contact between the push rod 407 and the bracket 1, a limiting portion 101 for abutting against the push rod 407 is disposed at the bottom of the bracket 1. Secondly, in order to improve the supporting capability of the limiting part 101 on the push rod 407, a cushion block is respectively arranged on the upper part of the limiting part 101 and the lower end of the push rod 407.

Referring to fig. 9 to 12, the device further includes an elastic member, two ends of the elastic member are respectively connected to the covering member 2 and the movable pulley 404, and after the covering member 2 is opened, the movable pulley 404 moves downward under the combined action of its gravity and the elastic force of the elastic member to ensure that the handle end 402 of the pull rope 401 hangs down; when the covering part 2 needs to be closed, the pull rope 401 is pulled downwards, the covering part 2 moves downwards, the elastic part is compressed and deformed after the push rod 407 abuts against the bracket 1, so that when the covering part 2 is opened again, the movable pulley 404 and the push rod 407 are pushed to move downwards through the elastic action of the elastic part. The elastic member is preferably a spring 408, an upper end of the spring 408 is connected to the cover member 2, and a lower end of the spring 408 is connected to the movable pulley 404.

Referring to fig. 5 to 8 and 13 to 16, in the present embodiment, the pull-down device 4 includes a plurality of fixed pulleys 403 and a plurality of movable pulleys 404, the pull rope 401 sequentially passes around the movable pulleys 404 and 403, and the ratio of the length of the pull rope 401 to the rising height of the push rod 407 can be increased by the plurality of fixed pulleys 403 and the plurality of movable pulleys 404, for example, when 1 fixed pulley 403 and 1 movable pulley 404 are provided, the ratio of the length of the pull rope 401 to the rising height of the push rod 407 is 2:1, for example, when 2 fixed pulleys 403 and 2 movable pulleys 404 are provided, the ratio of the length of the pull rope 401 to the rising height of the push rod 407 is 4: 1.

The embodiment of the invention also provides high-altitude operation equipment, which comprises the protective device provided by any one of the embodiments, wherein the support 1 can be a turntable side plate and a turntable tray, the beneficial effects of the high-altitude operation equipment only need to refer to the protective device, and the description is omitted here.

It should also be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.