Lifting mechanism for security engineering construction

Abstract

The utility model discloses a lifting mechanism for security engineering construction, which comprises a base, a lifting device is arranged on the base, the lifting device comprises a lead screw, a sliding chute, a roller, a lifting frame and a top plate, the lead screw is mounted on the base, the lifting frame is mounted on the base, the top plate is mounted at the top end of the lifting frame, the roller is mounted in the sliding chute, one side of the roller is connected with a quick-change device, and the quick-change device is connected with the lifting device. A lubricating device is arranged on the lead screw and comprises an oil injection pipe, a sealing piece, a fixed plate, a movable plate, a first spring, an oil storage bin, an oil outlet hole, an oil outlet, a movable frame, moving wheels, an oil leakage hole and a moving plate, the sealing piece is installed in the oil injection pipe, the first spring is arranged on one side of the movable plate, the oil storage bin is installed on one side of the lifting frame, and the oil outlet hole is formed in the bottom end of the oil storage bin. The oil outlet is formed below the movable frame, the movable frame is installed below the oil storage bin, the moving wheels are installed below the movable frame, the oil leakage holes are formed in the moving plate, and the moving plate is arranged on the inner sides of the moving wheels.

Description

Technical Field

[0001] The utility model relates to the technical field of security engineering construction equipment, and more specifically, to a lifting mechanism for security engineering construction. Background Art

[0002] In the prior art, the lifting mechanisms used in security engineering construction usually have several key limitations, which may lead to inefficient operation and safety risks in actual construction.

[0003] Firstly, in the existing technology, when construction at heights is required, a simple scaffolding is usually used. Although this is conducive to reducing manufacturing and maintenance costs, it cannot achieve a stable and effective lifting function, and is not conducive to flexible adaptation to construction heights. Simple structures often lack the necessary strength and mechanical complexity, and may become unstable when carrying heavy objects or operating in harsh environments, resulting in construction safety hazards and inefficiency.

[0004] Secondly, some existing technologies use a motor screw to drive lifting. This design can theoretically provide smooth and continuous lifting power. However, the existing technology usually fails to provide an effective screw lubrication system, and the mechanism for quickly adding lubricating oil is also insufficient. The screw without effective lubrication is prone to wear and noise during long-term operation, which reduces the overall life and operating efficiency of the mechanism, and increases the difficulty and cost of maintenance.

[0005] In addition, in order to reduce the wear and tear of the lifting frame when it moves, rollers are often installed at both ends of the lifting frame in the prior art. These rollers play a key role in reducing friction and wear, and improve the movement smoothness and service life of the entire mechanism. However, these rollers are easily damaged during use, especially when subjected to heavy loads or frequent movements. The prior art usually lacks a quick disassembly and assembly mechanism for the rollers. Once the rollers are damaged, the replacement process is complicated and time-consuming, which is particularly disadvantageous when construction tasks need to be completed quickly. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the problems existing in the prior art, the utility model provides a lifting mechanism for security engineering construction to solve the technical problems mentioned in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting mechanism for security engineering construction, comprising a base, a lifting device is arranged on the base, the lifting device comprises a lead screw, a slide groove, a roller, a lifting frame and a top plate, the lead screw is movably mounted on the base, the lifting frame is movably mounted on the base, and the bottom end of the lifting frame is movably connected to the lead screw through a thread, the top plate is mounted on the top end of the lifting frame, the slide groove is respectively arranged on both sides of the base and the top plate, the roller is movably mounted in the slide groove, one side of the roller is connected to a quick-change device, a lubrication device is arranged on the lead screw, and the lubrication device The device includes an oil filling pipe, a sealing plate, a fixed plate, a movable plate, a first spring, an oil storage bin, an oil outlet hole, an oil outlet port, a movable frame, a movable wheel, an oil leakage hole and a movable plate, the oil filling pipe is installed at the top of the oil storage bin, the sealing plate is movably installed in the oil filling pipe, the first spring is movably arranged on one side of the movable plate, the oil storage bin is installed on one side of the lifting frame, the oil outlet hole is opened at the bottom of the oil storage bin, the oil outlet port is arranged below the movable frame, the movable frame is movably installed below the oil storage bin, the movable wheel is movably installed below the movable frame, the oil leakage hole is opened on the movable plate, and the movable plate is fixedly arranged on the inner side of the movable wheel.

[0010] The utility model is further configured that a motor is provided on the base, a reducer is provided on the base, an output end of the reducer is connected to one end of the lead screw, and an input end of the reducer is connected to an output end of the motor.

[0011] The utility model is further configured that a guardrail is provided on the top plate, and the guardrail is fixedly mounted on the top plate. The setting of the guardrail prevents workers from falling.

[0012] The utility model is further configured that a guide plate is provided on the outer side of the movable plate, a guide groove is provided on the inner side of the oil filling pipe, and the guide plate is slidably installed in the guide groove.

[0013] The utility model is further configured that second springs are symmetrically provided on both sides of the movable frame, a sliding groove is opened at the bottom of the oil storage bin, the movable frame is slidably installed in the sliding groove, and the other end of the second spring is connected to the oil storage bin.

[0014] The utility model is further configured as follows: a slide plate is provided on the base, the slide plate is fixedly mounted on the base, an oil leakage groove is provided on the slide plate, and the configuration of the slide plate and the oil leakage groove ensures the stable rotation of the moving wheel.

[0015] The utility model is further configured as follows: the quick-change device includes a clamping sleeve, a guide block, a guide plate, a clamping rod, a clamping groove, a clamping rod, a sliding sleeve and a second push spring; the clamping sleeve is disassembled and sleeved on the outside of the clamping rod; the clamping rod can be movably installed on the inside of the roller, and one end of the clamping rod is connected to the lifting frame; the guide block is connected to the clamping rod, the guide plate is arranged on the side wall of the sliding sleeve, the clamping groove is opened on the outside of the clamping rod, one end of the clamping rod is engaged in the clamping groove, the sliding sleeve can be movably sleeved on the outside of the clamping sleeve, and the second push spring is sleeved at the connection between the clamping rod and the guide block; the configuration of the quick-change device realizes the rapid replacement of the roller.

[0016] The utility model is further configured that a first push spring is provided on the outer side of the clamping sleeve, and the other end of the first push spring is connected to the sliding sleeve. The first push spring ensures the stable use of the quick-change device and simplifies the operation.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a lifting mechanism for security engineering construction, which has the following beneficial effects:

[0019] 1. The lifting device uses a screw with a slide and roller mechanism to ensure the smoothness and precision of the lifting process. This structural design not only improves the safety of operation, but also enhances the stability and load-bearing capacity of the mechanism. At the same time, it can flexibly adapt the construction height and expand the scope of equipment use. This is especially important for high-intensity security engineering construction, because the stability of the mechanism directly affects the safety standards and efficiency of the construction.

[0020] 2. The innovation of the lubrication device lies in the integrated oil storage tank and the functions of automatic lubrication and rapid oil filling. It automatically lubricates the lead screw in sections through a uniquely designed movable frame and spring system, effectively reducing failures and performance degradation caused by wear and aging. This automatic lubrication system greatly improves the operating efficiency of the lead screw, reduces the workload of maintenance personnel, ensures the optimal performance of the lead screw during continuous use and extends its service life. In addition, the simplicity of oil filling in the lubrication device design makes it quick and simple to add lubricating oil when additional lubrication is needed or when the lubricating oil is insufficient, greatly improving maintenance efficiency.

[0021] 3. The quick-change device is composed of multiple components such as a clever snap-on sleeve and a sliding sleeve, so that the roller can be replaced quickly without complicated tools or long downtime. This is a huge improvement in the continuous operation capacity of the construction site. Through simplified disassembly and assembly steps, workers can replace the roller in a short time, effectively deal with possible roller damage problems, reduce construction delays caused by equipment failure, and increase the continuity and fluency of the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a lifting mechanism for security engineering construction in the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0025] Figure 4 It is a cross-sectional structural diagram of the quick-change device part of the utility model;

[0026] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 6 It is a structural schematic diagram of the quick-change device part of the utility model;

[0028] Figure 7 It is a schematic cross-sectional structure diagram of the lubrication device part in the utility model;

[0029] Figure 8 It is a schematic diagram of the cross-sectional structure of the lubrication device part of the utility model at a second angle;

[0030] Fig. 9 It is a schematic cross-sectional structure diagram of the lubrication device part at the third angle in the utility model.

[0031] In the figure: 1. base; 2. lead screw; 3. slide groove; 4. roller; 5. lifting frame; 6. top plate; 7. oil filling pipe; 8. sealing plate; 9. fixed plate; 10. movable plate; 11. first spring; 12. oil storage tank; 13. oil outlet; 14. oil outlet; 15. movable frame; 16. moving wheel; 17. oil leakage hole; 18. moving plate; 19. motor; 20. reducer; 21. guardrail; 22. guide plate; 23. guide groove; 24. second spring; 25. sliding groove; 26. slide plate; 27. oil leakage groove; 28. snap sleeve; 29. ​​guide block; 30. guide plate; 31. snap rod; 32. snap groove; 33. snap rod; 34. sliding sleeve; 35. second push spring; 36. first push spring. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0035] See also Figure 1-9 A lifting mechanism for security engineering construction includes a base 1, a lifting device is arranged on the base 1, the lifting device includes a lead screw 2, a slide 3, a roller 4, a lifting frame 5 and a top plate 6, the lead screw 2 can be movably mounted on the base 1, the lifting frame 5 can be movably mounted on the base 1, and the bottom end of the lifting frame 5 is movably connected to the lead screw 2 through a thread, the top plate 6 is installed on the top of the lifting frame 5, the slide 3 is respectively opened on both sides of the base 1 and the top plate 6, the roller 4 can be movably mounted in the slide 3, one side of the roller 4 is connected to a quick change device, the lead screw 2 is provided with a lubricating device, the lubricating device includes an oil injection pipe 7, a sealing sheet 8, a fixed plate 9, a movable plate 10, a first spring 11, oil storage bin 12, oil outlet 13, oil outlet 14, movable frame 15, moving wheel 16, oil leakage hole 17 and moving plate 18, the oil filling pipe 7 is installed on the top of the oil storage bin 12, the sealing sheet 8 is movably installed in the oil filling pipe 7, the first spring 11 is movably arranged on one side of the movable plate 10, the oil storage bin 12 is installed on one side of the lifting frame 5, the oil outlet 13 is opened at the bottom of the oil storage bin 12, the oil outlet 14 is arranged below the movable frame 15, the movable frame 15 is movably installed below the oil storage bin 12, the moving wheel 16 is movably installed below the movable frame 15, the oil leakage hole 17 is opened on the moving plate 18, and the moving plate 18 is fixedly arranged on the inner side of the moving wheel 16.

[0036] A motor 19 is provided on the base 1 , and a reducer 20 is provided on the base 1 . The output end of the reducer 20 is connected to one end of the lead screw 2 , and the input end of the reducer 20 is connected to the output end of the motor 19 .

[0037] A guardrail 21 is provided on the top plate 6 , and the guardrail 21 is fixedly mounted on the top plate 6 .

[0038] A guide plate 22 is disposed on the outer side of the movable plate 10 , a guide groove 23 is provided on the inner side of the oil filling pipe 7 , and the guide plate 22 is slidably installed in the guide groove 23 .

[0039] The second springs 24 are symmetrically arranged on both sides of the movable frame 15 . A sliding groove 25 is provided at the bottom of the oil storage bin 12 . The movable frame 15 is slidably installed in the sliding groove 25 . The other end of the second spring 24 is connected to the oil storage bin 12 .

[0040] A slide plate 26 is provided on the base 1 . The slide plate 26 is fixedly mounted on the base 1 , and an oil leakage groove 27 is provided on the slide plate 26 .

[0041] In this embodiment, when the device is needed for construction, the user first climbs onto the top plate 6. The guardrail 21 provided on the top plate 6 can prevent the user from falling. Then, the motor 19 installed on the base 1 is turned on. After being decelerated by the reducer 20, the motor 19 drives the lead screw 2 to rotate on the base 1. Since one side of the lifting frame 5 is movably connected to the lead screw 2 through a thread, the lifting frame 5 performs a shear-type lifting motion. Then, the rollers 4 provided on both sides of the lifting frame 5 slide in the corresponding slide grooves 3 respectively. When the lifting frame 5 rises to the specified height, the motor 19 can be turned off to carry out construction. When the lifting frame 5 slides on the outside of the lead screw 2, it drives the moving The wheel 16 slides on the slide plate 26, and then the moving plate 18 arranged inside the moving wheel 16 will push the movable frame 15 open, so that the movable frame 15 slides in the sliding groove 25 and compresses the second spring 24 arranged on the corresponding side. At the same time, the movable frame 15 drives the oil outlet 14 to move, so that the position of the oil outlet 14 corresponds to the position of the oil outlet hole 13, and then the lubricating oil stored in the oil storage tank 12 will flow to the inside of the moving wheel 16 through the oil outlet hole 13 and the oil outlet 14, and then the moving wheel 16 continues to roll, the movable frame 15 loses the limit of the moving plate 18, and the second spring 24 drives the movable frame 15 to reset and close the oil outlet 14. , then the lubricating oil on the inner side of the moving wheel 16 will flow downward through the oil leakage hole 17 provided on the moving plate 18 when the moving plate 18 is parallel to the slide plate 26, and then the moving wheel 16 continues to rotate, and the lubricating oil on the inner side of the moving wheel 16 will all flow to the surface of the lead screw 2 through the oil leakage groove 27 provided on the slide plate 26, thereby realizing the segmented lubrication of the lead screw 2. When it is necessary to add lubricating oil to the oil storage bin 12, the storage device with the oil filling groove provided on the side wall of the oil filling nozzle is taken over, and then the oil filling nozzle is inserted into the oil filling pipe 7, and the oil filling nozzle will push the movable plate 10, so that the movable plate 10 slides in the oil filling pipe 7, and at the same time, the guide plate 22 provided on the outer side of the movable plate 10 It will slide along the guide groove 23, the guide plate 22 and the guide groove 23 can prevent the sealing piece 8 from rotating, and at the same time the movable plate 10 will drive the sealing piece 8 to move, so that the gap of the sealing piece 8 is opened and gradually increases, and the movable plate 10 will cooperate with the fixed plate 9 to compress the first spring 11, and then the lubricating oil in the storage device will flow into the oil filling pipe 7 through the oil filling groove opened on the side wall of the oil filling nozzle, and flow into the oil storage tank 12 through the gap of the sealing piece 8. After the addition is completed, the storage device is put away, and the first spring 11 will push the movable plate 10 to reset, so that there is no gap between the sealing pieces 8, thereby preventing the leakage of the lubricating oil.

[0042] See also Figure 1-6As an implementation of the quick-change device: the quick-change device includes a clamping sleeve 28, a guide block 29, a guide plate 30, a clamping rod 31, a clamping groove 32, a clamping rod 33, a sliding sleeve 34 and a second push spring 35. The clamping sleeve 28 is disassembled and sleeved on the outside of the clamping rod 31. The clamping rod 31 can be movably installed on the inner side of the roller 4, and one end of the clamping rod 31 is connected to the lifting frame 5. The guide block 29 is connected to the clamping rod 33. The guide plate 30 is arranged on the side wall of the sliding sleeve 34. The clamping groove 32 is opened on the outside of the clamping rod 31. One end of the clamping rod 33 is clamped into the clamping groove 32. The sliding sleeve 34 can be movably sleeved on the outside of the clamping sleeve 28. The second push spring 35 is sleeved at the connection between the clamping rod 33 and the guide block 29.

[0043] A first push spring 36 is disposed on the outer side of the clamping sleeve 28 , and the other end of the first push spring 36 is connected to the sliding sleeve 34 .

[0044] More specifically, when the roller 4 needs to be replaced, the sliding sleeve 34 is pulled in the corresponding direction, the sliding sleeve 34 will compress the first push spring 36 set on one side, and the sliding sleeve 34 will drive the guide plate 30 to move. Due to the special structural design of the guide plate 30 and the guide block 29, when the guide plate 30 moves, the guide block 29 will drive the clamping rod 33 to move outward, and make the clamping rod 33 compress the second push spring 35 connected to one side. When the sliding sleeve 34 can no longer move, the first push spring 36 and the second push spring 35 are compressed to the limit, and one end of the clamping rod 33 is completely disengaged from the clamping groove 32, and then the sliding sleeve 34 is continued to be pulled, the sliding sleeve 34 will drive the clamping sleeve 28 to disengage from the outside of the clamping rod 31, and then the roller 4 is removed from the outside of the clamping rod 31 for replacement, and then the new roller 4 is installed back to its original position, and then the roller 4 is completely connected to both sides of the lifting frame 5 according to the above process.

[0045] In summary, when the overall equipment is in use or running: when it is necessary to use the equipment for construction, first climb onto the top plate 6. The guardrail 21 provided on the top plate 6 can prevent people from falling. Then turn on the motor 19 installed on the base 1. After being decelerated by the reducer 20, the motor 19 drives the lead screw 2 to rotate on the base 1. Since one side of the lifting frame 5 is movably connected to the lead screw 2 through a thread, the lifting frame 5 will perform a shear-type lifting movement. Then the rollers 4 provided on both sides of the lifting frame 5 will slide in the corresponding slide grooves 3 respectively. When it rises to the specified height, turn off the motor 19 to carry out construction. When the lifting frame 5 slides on the outside of the lead screw 2 When the movable wheel 16 is shifted, the movable wheel 16 will be driven to slide on the slide plate 26, and then the movable plate 18 arranged on the inner side of the movable wheel 16 will push the movable frame 15 open, so that the movable frame 15 slides in the sliding groove 25 and compresses the second spring 24 arranged on the corresponding side. At the same time, the movable frame 15 will drive the oil outlet 14 to move, so that the position of the oil outlet 14 corresponds to the position of the oil outlet hole 13, and then the lubricating oil stored in the oil storage tank 12 will flow to the inner side of the movable wheel 16 through the oil outlet hole 13 and the oil outlet 14, and then the movable wheel 16 continues to roll, the movable frame 15 loses the limit of the movable plate 18, and the second spring 24 drives the movable frame 15 to reset and re-open the oil outlet 14 is closed, and then the lubricating oil on the inner side of the moving wheel 16 will flow downward through the oil leakage hole 17 provided on the moving plate 18 when the moving plate 18 is parallel to the slide plate 26, and then the moving wheel 16 continues to rotate, and the lubricating oil on the inner side of the moving wheel 16 will all flow to the surface of the lead screw 2 through the oil leakage groove 27 provided on the slide plate 26, thereby realizing the segmented lubrication of the lead screw 2. When it is necessary to add lubricating oil to the oil storage bin 12, the storage device with the oil filling groove provided on the side wall of the oil filling nozzle is taken over, and then the oil filling nozzle is inserted into the oil filling pipe 7, and the oil filling nozzle will push the movable plate 10, so that the movable plate 10 slides in the oil filling pipe 7, and at the same time, the guide plate provided on the outer side of the movable plate 10 22 will slide along the guide groove 23, the guide plate 22 and the guide groove 23 can prevent the sealing piece 8 from rotating, and at the same time the movable plate 10 will drive the sealing piece 8 to move, so that the gap of the sealing piece 8 is opened and gradually increases, and the movable plate 10 will cooperate with the fixed plate 9 to compress the first spring 11, and then the lubricating oil in the storage device will flow into the oil filling pipe 7 through the oil filling groove opened on the side wall of the oil filling nozzle, and flow into the oil storage tank 12 through the gap of the sealing piece 8. After the addition is completed, the storage device is put away, and the first spring 11 will push the movable plate 10 to reset, so that there is no gap between the sealing pieces 8, thereby preventing the leakage of the lubricating oil.

[0046] When the roller 4 needs to be replaced, the sliding sleeve 34 is pulled in the corresponding direction, the sliding sleeve 34 will compress the first push spring 36 set on one side, and the sliding sleeve 34 will drive the guide plate 30 to move. Due to the special structural design of the guide plate 30 and the guide block 29, when the guide plate 30 moves, the guide block 29 will drive the clamping rod 33 to move outward, and make the clamping rod 33 compress the second push spring 35 connected to one side. When the sliding sleeve 34 can no longer move, the first push spring 36 and the second push spring 35 are compressed to the limit, and one end of the clamping rod 33 is completely disengaged from the clamping groove 32, and then the sliding sleeve 34 is continued to be pulled, the sliding sleeve 34 will drive the clamping sleeve 28 to disengage from the outer side of the clamping rod 31, and then the roller 4 is removed from the outer side of the clamping rod 31 for replacement, and then the new roller 4 is installed back to its original position, and then the roller 4 is completely connected to both sides of the lifting frame 5 according to the above process.

[0047] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lifting mechanism for security engineering construction, comprising a base (1), characterized in that: The base (1) is provided with a lifting device, and the lifting device comprises a lead screw (2), a slide groove (3), a roller (4), a lifting frame (5) and a top plate (6). The lead screw (2) is mounted on the base (1), the lifting frame (5) is mounted on the base (1), the top plate (6) is mounted on the top of the lifting frame (5), the roller (4) is mounted in the slide groove (3), one side of the roller (4) is connected with a quick change device, and the lead screw (2) is provided with a lubricating device, and the lubricating device comprises an oil filling pipe (7), a sealing sheet (8), a fixed plate (9), a movable plate (10), a first spring (11), an oil storage bin (12), an oil outlet hole (13), an outlet An oil port (14), a movable frame (15), a movable wheel (16), an oil leakage hole (17) and a movable plate (18); a sealing sheet (8) is installed in an oil filling pipe (7); a first spring (11) is arranged on one side of the movable plate (10); an oil storage bin (12) is installed on one side of the lifting frame (5); an oil outlet hole (13) is opened at the bottom end of the oil storage bin (12); an oil outlet (14) is arranged below the movable frame (15); the movable frame (15) is installed below the oil storage bin (12); the movable wheel (16) is installed below the movable frame (15); the oil leakage hole (17) is opened on the movable plate (18); and the movable plate (18) is arranged on the inner side of the movable wheel (16).

2. The lifting mechanism for security engineering construction according to claim 1 is characterized by: A motor (19) is provided on the base (1), and a reducer (20) is provided on the base (1). The output end of the reducer (20) is connected to one end of the lead screw (2), and the input end of the reducer (20) is connected to the output end of the motor (19).

3. The lifting mechanism for security engineering construction according to claim 2 is characterized by: A guardrail (21) is provided on the top plate (6), and the guardrail (21) is fixedly mounted on the top plate (6).

4. The lifting mechanism for security engineering construction according to claim 1 is characterized by: A guide plate (22) is provided on the outer side of the movable plate (10), a guide groove (23) is provided on the inner side of the oil injection pipe (7), and the guide plate (22) is slidably installed in the guide groove (23).

5. The lifting mechanism for security engineering construction according to claim 4 is characterized by: Second springs (24) are symmetrically arranged on both sides of the movable frame (15), a sliding groove (25) is provided at the bottom end of the oil storage bin (12), the movable frame (15) is slidably installed in the sliding groove (25), and the other end of the second spring (24) is connected to the oil storage bin (12).

6. The lifting mechanism for security engineering construction according to claim 5 is characterized by: The base (1) is provided with a slide plate (26), the slide plate (26) is fixedly mounted on the base (1), and an oil leakage groove (27) is provided on the slide plate (26).

7. A lifting mechanism for security engineering construction according to any one of claims 1 to 6, characterized in that: The quick-change device comprises a clamping sleeve (28), a guide block (29), a guide plate (30), a clamping rod (31), a clamping groove (32), a clamping rod (33), a sliding sleeve (34) and a second push spring (35); the clamping sleeve (28) is detachably sleeved on the outside of the clamping rod (31); the clamping rod (31) is movably mounted on the inside of the roller (4); one end of the clamping rod (31) is connected to the lifting frame (5); the guide block (29) is connected to the clamping rod (33); the guide plate (30) is arranged on the side wall of the sliding sleeve (34); the clamping groove (32) is opened on the outside of the clamping rod (31); one end of the clamping rod (33) is clamped into the clamping groove (32); the sliding sleeve (34) is movably sleeved on the outside of the clamping sleeve (28); and the second push spring (35) is sleeved at the connection between the clamping rod (33) and the guide block (29).

8. The lifting mechanism for security engineering construction according to claim 7 is characterized by: A first push spring (36) is provided on the outside of the clamping sleeve (28), and the other end of the first push spring (36) is connected to the sliding sleeve (34).

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