Safety protection equipment for lifting machine

Abstract

The utility model relates to the technical field of engineering machinery safety, in particular to safety protection equipment for a lifting machine, which comprises a long cylinder, a long rod is attached to the inner wall of the long cylinder, an adjusting mechanism and a guide mechanism are respectively arranged between the long rod and the long cylinder, and an annular plate is rotatably sleeved on the edge of the upper portion of the outer wall of the long rod. The upper end of the annular plate is fixedly connected with an inner threaded pipe, the inner wall of the inner threaded pipe is in threaded connection with a screw rod, the upper end of the long rod is provided with a cylindrical groove, the cylindrical groove is in sliding fit with the screw rod, the upper end of the screw rod is fixedly connected with a concave supporting plate, and the bottom end of the long cylinder is fixedly connected with a bottom plate. When the equipment is used, height adjustment operation is easy, long time and large physical strength do not need to be consumed, the labor burden of a user is reduced, the efficiency of automobile maintenance is indirectly improved, meanwhile, the equipment can be in a stored state when not used, occupied space is reduced, and storage and transportation are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery safety, in particular to a safety protection device for a lift. Background Technique

[0002] A lift is a mechanical device used to vertically lift or lower objects, and is widely used in fields such as automobile maintenance, industrial production, and construction. Its main function is to lift an object to a certain height by mechanical means for inspection, maintenance or other operations.

[0003] There are many types of safety protection devices for lifts, such as: safety brackets (or safety struts), safety locking devices, overload protection devices, limit switches, safety guardrails, emergency stop devices, etc. Among them, the safety bracket is used to provide additional stability when the lift is in the raised state. For example, after lifting a car, the safety bracket is used to assist in supporting the car to ensure that it will not become unstable or tilt and cause an accidental drop during car maintenance or repair, thereby improving the overall operation safety and preventing accidental accidents.

[0004] The existing safety brackets generally consist of support rods, bases, adjustment devices and locking devices. When the existing safety brackets are in use, it takes a long time to rotate the internal thread ring on the locking device to fix the length of the support rod, which requires a long time and a large amount of physical effort, bringing a large labor burden to the users and indirectly affecting the efficiency of car repair. For this reason, we propose a safety protection device for a lift. Content of the Utility Model

[0005] The purpose of the utility model is to provide a safety protection device for a lift to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A safety protection device for a lift, including a long cylinder, the inner wall of the long cylinder is attached to a long rod, an adjustment mechanism and a guiding mechanism are respectively arranged between the long rod and the long cylinder, and an annular plate is rotatably sleeved on the upper edge of the outer wall of the long rod. The upper end of the annular plate is fixedly connected to an internal thread tube, the inner wall of the internal thread tube is threadedly connected to a screw rod, a cylindrical groove is opened at the upper end of the long rod, the cylindrical groove is slidably matched with the screw rod, the upper end of the screw rod is fixedly connected to a concave supporting plate, and the bottom end of the long cylinder is fixedly connected to a bottom plate.

[0007] Preferably, the adjusting mechanism includes a cylinder body and a plurality of jacks. The cylinder body is fixedly connected to the upper edge of the outer wall of the long cylinder, and an insertion column is slidably inserted through the inner walls of both the cylinder body and the long cylinder. A plurality of the jacks are linearly arranged on the outer wall of the long rod from top to bottom, and one of the jacks is slidably engaged with the insertion column. An elastic member and a pulling member are respectively provided between the insertion column and the cylinder body.

[0008] Preferably, the elastic member includes a collar. The collar is fixedly sleeved on the outer wall of the insertion column, and the rear end of the collar is in contact with the rear end face inside the cylinder body. A spring is fixedly connected between the front end of the collar and the front end face inside the cylinder body, and the spring is slidably sleeved on the outer wall of the insertion column.

[0009] Preferably, the pulling member includes a pull block. The pull block is fixedly connected to the front end of the insertion column, and the rear end of the pull block is in contact with the front end of the cylinder body. A limiting component is provided between the pull block and the cylinder body.

[0010] Preferably, the limiting component includes an L-shaped elastic plate and a square groove. The L-shaped elastic plate is fixedly connected to the outer wall of the cylinder body near the rear edge, and an L-shaped insertion plate is fixedly connected to the front end of the L-shaped elastic plate. The square groove is opened on the outer wall of the pull block corresponding to the L-shaped insertion plate, and the rear end inside the square groove is in contact with the rear end of the L-shaped insertion plate.

[0011] Preferably, the guiding mechanism includes a slider and a sliding groove. The slider is fixedly connected to the upper edge of the inner wall of the long cylinder. The sliding groove is opened on the outer wall of the long rod corresponding to the slider, and the sliding groove is slidably engaged with the slider.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the mutual cooperation of the long cylinder, the long rod, the adjusting mechanism, the guiding mechanism, the annular plate, the internally threaded tube, the screw rod, the cylindrical groove, the concave supporting plate and the bottom plate, the height adjustment operation of the equipment during use is simple, without taking a long time and requiring great physical effort. This not only reduces the labor burden on the users, but also indirectly improves the efficiency of automobile maintenance. At the same time, the equipment can be in a storage state when not in use, reducing the occupation of space and facilitating storage and transportation. Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the present utility model;

[0014] Figure 2 is Figure 1 the enlarged schematic diagram of the structure at A in

[0015] Figure 3 is the display diagram of the long cylinder, the bottom plate and the slider of the present utility model;

[0016] Figure 4 is the partial cross-sectional view of the present utility model;

[0017] Figure 5 This is a display diagram of the long rod, concave-shaped support plate, sliding groove and screw of the present utility model;

[0018] Figure 6 This is a display diagram of the annular plate and the internally threaded tube of the present utility model;

[0019] Figure 7 This is a display diagram of the long rod, insertion hole and cylindrical groove of the present utility model.

[0020] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. long cylinder; 2. long rod; 3. annular plate; 4. internally threaded tube; 5. concave-shaped support plate; 6. insertion hole; 7. bottom plate; 8. cylinder body; 9. pulling block; 10. L-shaped elastic plate; 11. L-shaped insertion plate; 12. square groove; 13. slider; 14. insertion post; 15. sleeve ring; 16. spring; 17. sliding groove; 18. screw; 19. cylindrical groove. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-7 , a safety protection device for a lift shown in the figure, including a long cylinder 1, a long rod 2 is attached to the inner wall of the long cylinder 1, an adjusting mechanism and a guiding mechanism are respectively provided between the long rod 2 and the long cylinder 1, and an annular plate 3 is rotatably sleeved on the upper edge of the outer wall of the long rod 2, an internally threaded tube 4 is fixedly connected to the upper end of the annular plate 3, a screw 18 is threadedly connected to the inner wall of the internally threaded tube 4, a cylindrical groove 19 is opened at the upper end of the long rod 2, and the cylindrical groove 19 is slidably matched with the screw 18, the upper end of the screw 18 is fixedly connected to a concave-shaped support plate 5, and the bottom end of the long cylinder 1 is fixedly connected to a bottom plate 7.

[0023] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 7 , in the figure, the adjusting mechanism includes a cylinder body 8 and a plurality of insertion holes 6, the cylinder body 8 is fixedly connected to the upper edge of the outer wall of the long cylinder 1, and an insertion post 14 is slidably inserted through the inner walls of the cylinder body 8 and the long cylinder 1, the plurality of insertion holes 6 are linearly arranged in an array from top to bottom on the outer wall of the long rod 2, one of the insertion holes 6 is slidably matched with the insertion post 14, and an elastic member and a pulling member are respectively provided between the insertion post 14 and the cylinder body 8.

[0024] Please refer to Figure 4, in the figure, the elastic member includes a collar 15, the collar 15 is fixedly sleeved on the outer wall of the plug post 14, and the rear end of the collar 15 is in contact with the inner rear end face of the cylinder body 8, and a spring 16 is fixedly connected between the front end of the collar 15 and the inner front end face of the cylinder body 8, and the spring 16 is slidably sleeved on the outer wall of the plug post 14.

[0025] Please refer to Figure 2 and Figure 4 , in the figure, the pulling member includes a pull block 9, the pull block 9 is fixedly connected to the front end of the plug post 14, and the rear end of the pull block 9 is in contact with the front end of the cylinder body 8, and a limiting component is provided between the pull block 9 and the cylinder body 8.

[0026] Please refer to Figure 2 and Figure 4 , in the figure, the limiting component includes an L-shaped elastic plate 10 and a square groove 12, the L-shaped elastic plate 10 is fixedly connected to the outer wall of the cylinder body 8 near the rear edge, and an L-shaped plug plate 11 is fixedly connected to the front end of the L-shaped elastic plate 10, the square groove 12 is opened on the outer wall of the pull block 9 corresponding to the L-shaped plug plate 11, and the inner rear end of the square groove 12 is in contact with the rear end of the L-shaped plug plate 11.

[0027] Please refer to Figure 3 and Figure 5 , in the figure, the guiding mechanism includes a slider 13 and a sliding groove 17, the slider 13 is fixedly connected to the upper edge of the inner wall of the long cylinder 1, the sliding groove 17 is opened on the outer wall of the long rod 2 corresponding to the slider 13, and the sliding groove 17 and the slider 13 are slidably matched.

[0028] Working principle: When the lift raises the vehicle, this device can be used to further support the vehicle. During use, first place this device on the ground and align the concave support plate 5 with the support part of the vehicle. Then, hold the long rod 2 with one hand, pinch the pulling block 9 with the middle finger and thumb of the other hand, and use the index finger of this hand to pry up the L-shaped insertion plate 11. Then, the L-shaped insertion plate 11 will move upward in the square groove 12 on the pulling block 9 (during this process, the L-shaped elastic plate 10 will be driven by the L-shaped insertion plate 11 to tilt upward on the cylinder body 8). When the L-shaped insertion plate 11 completely leaves the square groove 12, pull the pulling block 9 forward. The pulling block 9 will drive the insertion post 14 to slide forward in the inner walls of the long cylinder 1 and the cylinder body 8. The insertion post 14 will drive the collar 15 to slide forward in the cylinder body 8 (during this process, the spring 16 between the collar 15 and the cylinder body 8 will be compressed on the outer wall of the insertion post 14), and the insertion post 14 will also slide forward in a jack 6 on the corresponding long rod 2 and completely leave this jack 6. Then, while keeping the pulling block 9 held without releasing, move the long rod 2 upward with the other hand. The long rod 2 will slide upward in the long cylinder 1 (during this process, the sliding groove 17 on the long rod 2 will slide upward on the outer wall of the slider 13 on the long cylinder 1). The long rod 2 will drive the annular plate 3 and the internal thread tube 4 on the annular plate 3 to move upward together. The internal thread tube 4 will drive the screw rod 18 to move upward. The screw rod 18 will drive the concave support plate 5 to move upward until the upper surface of the concave support plate 5 fits the support part of the vehicle. Then, release the pulling block 9 (at this time, the L-shaped insertion plate 11 still needs to be pried up). Then, under the action of the spring 16, the insertion post 14 will automatically reset and insert into another jack 6 on the long rod 2. Then, the long rod 2 can be fixed after moving upward (at this time, the L-shaped insertion plate 11 can be released, and the L-shaped elastic plate 10 can automatically reset and make the L-shaped insertion plate 11 reset. Then, under the limiting action of the limiting component, it can prevent the pulling block 9 from generating displacement due to accidentally touching the pulling block 9 during work). At this time, the auxiliary support function for the vehicle is completed, playing a safety protection role when the staff repairs the vehicle.

[0029] Since multiple jacks 6 are arranged in a linear array, when the upper surface of the concave support plate 5 fits the support part of the vehicle and the pulling block 9 is released, the insertion post 14 cannot insert into another jack 6 on the long rod 2. At this time, the long rod 2 can be moved downward a small distance to enable the insertion post 14 to smoothly insert into another jack 6 on the long rod 2. At this time, in order to make the upper surface of the concave support plate 5 fit the support part of the vehicle, one hand can firmly hold the concave support plate 5 to prevent the concave support plate 5 from rotating, and the other hand can rotate the annular plate 3. The annular plate 3 will rotate on the long rod 2, and the annular plate 3 will drive the internal thread tube 4 to rotate. The internal thread tube 4 can drive the screw rod 18 to slide upward in the cylindrical groove 19 on the long rod 2. The screw rod 18 can drive the concave support plate 5 to move upward until the upper surface of the concave support plate 5 fits the support part of the vehicle, and then the rotation of the annular plate 3 can be stopped. The operation is simple.

[0030] Finally, when the device is not needed, move the long rod 2 in the reverse direction according to the same operation, so that the long rod 2 is inside the long cylinder 1, and then the device can be in a storage state, thereby reducing the occupation of space and facilitating storage and transportation.

[0031] It should be noted that the height adjustment operation of this device is simple during use, without taking a long time or requiring great physical effort. This not only reduces the labor burden on the users, but also indirectly improves the efficiency of vehicle maintenance. At the same time, this device can be in a storage state when not in use, reducing the occupation of space and facilitating storage and transportation.

[0032] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for a lifting machine, comprising a long tube (1), characterized in that: The inner wall of the long tube (1) is fitted with a long rod (2), an adjustment mechanism and a guide mechanism are respectively provided between the long rod (2) and the long tube (1), and an annular plate (3) is rotatably mounted on the upper edge of the outer wall of the long rod (2), the upper end of the annular plate (3) is fixedly connected to an internal threaded tube (4), the inner wall of the internal threaded tube (4) is threadedly connected to a screw rod (18), the upper end of the long rod (2) is provided with a cylindrical groove (19), the cylindrical groove (19) and the screw rod (18) are slidably matched, the upper end of the screw rod (18) is fixedly connected to a concave support plate (5), and the bottom end of the long tube (1) is fixedly connected to a bottom plate (7).

2. A safety protection device for a lift according to claim 1, characterized in that: The adjustment mechanism comprises a cylinder (8) and a plurality of insertion holes (6), wherein the cylinder (8) is fixedly connected to the upper edge of the outer wall of the long cylinder (1), and a plug post (14) is slidably inserted through the cylinder (8) and the inner wall of the long cylinder (1), and a plurality of the insertion holes (6) are arranged in a linear array from top to bottom on the outer wall of the long rod (2), wherein one of the insertion holes (6) is slidably matched with the plug post (14), and an elastic member and a pulling member are respectively provided between the plug post (14) and the cylinder (8).

3. A safety protection device for a lift according to claim 2, characterized in that: The elastic member comprises a collar (15), the collar (15) being fixedly sleeved on the outer wall of the plug post (14), and the rear end of the collar (15) being in contact with the inner rear end surface of the cylinder (8), and a spring (16) being fixedly connected between the front end of the collar (15) and the inner front end surface of the cylinder (8), and the spring (16) being slidably sleeved on the outer wall of the plug post (14).

4. A safety protection device for a lift according to claim 2, characterized in that: The pulling member comprises a pulling block (9), the pulling block (9) being fixedly connected to the front end of the plug post (14), the rear end of the pulling block (9) being in contact with the front end of the cylinder (8), and a limiting component being provided between the pulling block (9) and the cylinder (8).

5. A safety protection device for a lift according to claim 4, characterized in that: The limiting assembly comprises an L-shaped elastic plate (10) and a square groove (12); the L-shaped elastic plate (10) is fixedly connected to the outer wall of the cylinder (8) near the rear edge, and the front end of the L-shaped elastic plate (10) is fixedly connected to the L-shaped plug plate (11); the square groove (12) is formed on the outer wall of the pull block (9) corresponding to the L-shaped plug plate (11), and the inner rear end of the square groove (12) is in contact with the rear end of the L-shaped plug plate (11).

6. The safety protection device for a lift according to claim 1, characterized in that: The guide mechanism comprises a slider (13) and a slide groove (17); the slider (13) is fixedly connected to the upper edge of the inner wall of the long tube (1); the slide groove (17) is provided on the outer wall of the long rod (2) corresponding to the slider (13); and the slide groove (17) and the slider (13) are slidably matched.

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