Lever block pulling force detection device

Abstract

The utility model relates to the technical field of power transmission and transformation line construction, in particular to a lever block pulling force detection device which comprises a box body, a detachable cover plate is arranged at the top of the box body, a transparent plate is embedded in the surface of the box body, an installation block is fixedly connected to the inner wall of the box body, ground anchors are arranged on the two sides of the box body, and the ground anchors are connected with the transparent plate. A connecting piece is arranged on the surface of the ground anchor; through the adjusting assembly, the installed lever block chain can be rapidly tensioned, meanwhile, the driving assembly is matched to drive the handle to move in a reciprocating mode to apply pulling force to achieve pulling force testing of the lever block, operation is easy and convenient, the chain tensioning adjusting time can be saved, and the detection effect is improved; the detection position can be protected under the combined action of the mounting block, the box body and the cover plate, potential safety hazards caused by chain snapping are avoided, meanwhile, the hydraulic push rod and the motor are protected by the mounting block, damage to the hydraulic push rod and the motor caused by the snapped chain is avoided, and the service life of the equipment is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission and transformation line construction, and particularly relates to a pull testing device for a hand winch. Background Technique

[0002] The hand winch is an important construction tool for transmission line engineering construction, and it is required to provide safe and reliable pulling force in application. According to the requirements, before each maintenance and use, a pulling force test of 1.25 times the rated load (usually 8 - 15 tons of force) must be carried out for each hand winch to ensure safe use. At present, each power transmission and transformation engineering company generally has more than 2,000 hand winches, and the pulling force test is a very difficult problem. Purchasing a hydraulic pulling force testing machine is not only expensive but also bulky; outsourcing the test of a large-tonnage hydraulic pulling force testing machine has a relatively high test cost, and it takes more than 15 minutes to test one, with low efficiency, and it is difficult to meet the rapidly rotating use requirements.

[0003] After retrieval, the Chinese patent discloses a pull testing device for a hand winch (publication number CN207991819U). This patented technology can achieve that the total time for loading and unloading is less than or equal to 1 minute, and there is no need for manual loading and unloading, only one person is required to operate. However, when the hand winch to be tested is connected, the chain of the hand winch to be tested needs a long time to be adjusted and tightened for testing. Therefore, those skilled in the art provide a pull testing device for a hand winch to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pull testing device for a hand winch to solve the above problems, and it improves the problem that the chain needs a long time to be adjusted and tightened for testing.

[0005] The utility model realizes the above purpose through the following technical solutions. A pull testing device for a hand winch includes: a box body, a detachable cover plate is arranged on the top of the box body, a transparent plate is embedded on the surface of the box body, a mounting block is fixedly connected to the inner wall of the box body, ground anchors are arranged on both sides of the box body, a connecting piece is arranged on the surface of the ground anchor, and the other end of the connecting piece extends into the box body, and a pull meter is arranged on the surface of one of the connecting pieces; an adjusting component, the adjusting component is arranged inside the mounting block and is used for quickly adjusting the chain of the hand winch to be tested to be tightened; a driving component, the driving component is arranged inside the mounting block and is used for cooperating with the handle of the hand winch to be tested to adjust the hand winch.

[0006] Preferably, the adjusting component includes a hydraulic push rod arranged inside the mounting block, one end of the hydraulic push rod is fixedly connected with a connecting rod, and the other end of the connecting rod penetrates out of the mounting block and is fixedly connected with the other end of the pull meter.

[0007] Preferably, a mounting seat is fixedly connected to the end of the output shaft of the hydraulic push rod. A mounting rod is fixedly connected to the top of the mounting seat. The upper end of the mounting rod penetrates through the mounting block and is fixedly connected to a connecting part.

[0008] Preferably, the driving assembly includes a motor disposed inside the mounting block. The output shaft of the motor penetrates through the mounting block and is fixedly connected to a turntable. A connecting shaft is eccentrically fixedly connected to the top of the turntable. A driving rod is rotatably disposed on the surface of the connecting shaft.

[0009] Preferably, the other end of the driving rod is hinged to a connecting seat. The other end of the connecting seat is provided with two clamping plates symmetrically distributed. The top of one of the clamping plates is fixedly connected to the bottom of the driving rod. Buffer blocks are fixedly connected to the opposite sides of the two clamping plates.

[0010] Preferably, a threaded rod is rotatably connected to the surface of the connecting seat. The upper end of the threaded rod threadedly penetrates through the other clamping plate and is fixedly connected to a knob.

[0011] Preferably, a limiting rod is fixedly connected to the surface of one of the clamping plates. The other end of the limiting rod penetrates through the other clamping plate and is slidably connected to the inner wall of the clamping plate.

[0012] The beneficial effects of the present utility model are as follows: The chain of the hand-operated hoist can be quickly tightened through the adjusting assembly. At the same time, the driving assembly is cooperated to drive the handle to reciprocate and apply a pulling force to realize the pulling force test of the hand-operated hoist. The operation is simple, the time for adjusting and tightening the chain can be saved, the detection effect is improved, and the detection position can be protected under the combined action of the mounting block, the box body and the cover plate to avoid potential safety hazards caused by the chain breaking. At the same time, the mounting block protects the hydraulic push rod and the motor, avoiding damage to the two caused by the broken chain, and effectively improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is a partial sectional view of the present utility model;

[0015] Figure 3 is a schematic structural view of the adjusting assembly of the present utility model;

[0016] Figure 4 is a schematic structural view of the driving assembly of the present utility model.

[0017] In the figure: 1. Box body; 101. Cover plate; 102. Transparent plate; 103. Mounting block; 2. Ground anchor; 201. Connecting piece; 202. Tensile meter; 3. Adjusting assembly; 301. Hydraulic push rod; 302. Connecting rod; 303. Mounting seat; 304. Mounting rod; 305. Connecting part; 4. Driving assembly; 401. Motor; 402. Turntable; 403. Connecting shaft; 404. Driving rod; 405. Clamping plate; 406. Buffer block; 407. Threaded rod; 408. Limiting rod. Detailed implementation mode

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] During specific implementation: As Figures 1-4 shown, a hand-operated hoist tensile force detection device includes: a box body 1, a detachable cover plate 101 is arranged on the top of the box body 1, a transparent plate 102 is embedded and installed on the surface of the box body 1, a mounting block 103 is fixedly connected to the inner wall of the box body 1, ground anchors 2 are arranged on both sides of the box body 1, a connecting piece 201 is arranged on the surface of the ground anchor 2, the other end of the connecting piece 201 extends into the interior of the box body 1, and a tensile meter 202 is arranged on the surface of one of the connecting pieces 201; an adjusting assembly 3, the adjusting assembly 3 is arranged inside the mounting block 103, and the adjusting assembly 3 is used to quickly adjust the tension of the chain of the hand-operated hoist to be measured; a driving assembly 4, the driving assembly 4 is arranged inside the mounting block 103, and the driving assembly 4 is used to cooperate with the handle of the hand-operated hoist to be measured to adjust the hand-operated hoist.

[0020] As Figure 1 , Figure 2 and Figure 3 shown, the adjusting assembly 3 includes a hydraulic push rod 301 arranged inside the mounting block 103, one end of the hydraulic push rod 301 is fixedly connected to a connecting rod 302, the other end of the connecting rod 302 penetrates out of the mounting block 103 and is fixedly connected to the other end of the tensile meter 202; the end of the output shaft of the hydraulic push rod 301 is fixedly connected to a mounting seat 303, the top of the mounting seat 303 is fixedly connected to a mounting rod 304, and the upper end of the mounting rod 304 penetrates out of the mounting block 103 and is fixedly connected to a connecting part 305;

[0021] Connect one end of the hand chain hoist to be tested to another connecting piece 201, and connect one end of the chain to the connecting part 305. After the connection is completed, by adjusting the telescopic length of the output shaft of the hydraulic push rod 301, the effect of quickly pulling the chain tight can be achieved, saving the steps of using the handle of the hand chain hoist to adjust the length of the chain to make it tight in the traditional method. The operation is simple and the detection efficiency is effectively improved;

[0022] As Figure 1 、 Figure 2 and Figure 4 shown, the driving assembly 4 includes a motor 401 arranged inside the mounting block 103. The output shaft of the motor 401 penetrates through the mounting block 103 and is fixedly connected with a turntable 402. An eccentric connecting shaft 403 is fixedly connected to the top of the turntable 402. A driving rod 404 is rotatably arranged on the surface of the connecting shaft 403; the other end of the driving rod 404 is hinged with a connecting seat. The other end of the connecting seat is provided with two clamping plates 405 which are symmetrically distributed. The top of one of the clamping plates 405 is fixedly connected with the bottom of the driving rod 404. Buffer blocks 406 are fixedly connected to the opposite sides of the two clamping plates 405. The buffer blocks 406 are made of rubber material, which can increase the friction force with the handle contact surface and prevent the handle from being damaged due to excessive extrusion; a threaded rod 407 is rotatably connected to the surface of the connecting seat. The upper end of the threaded rod 407 threadedly penetrates through the other clamping plate 405 and is fixedly connected with a knob; a limiting rod 408 is fixedly connected to the surface of one of the clamping plates 405. The other end of the limiting rod 408 penetrates through the other clamping plate 405 and is slidably connected with the inner wall of the clamping plate 405;

[0023] By placing the handle of the hand chain hoist to be tested between the two clamping plates 405 and rotating the threaded rod 407, the clamping plate 405 threadedly connected with it can be driven to move towards the other clamping plate 405. During this process, the two clamping plates 405 and the two buffer blocks 406 can be driven to clamp the handle. The setting of the limiting rod 408 is used to prevent the handle from rotating synchronously during the process of rotating the threaded rod 407;

[0024] After the handle is clamped, by starting the motor 401, the turntable 402 can be driven to rotate. During this process, the connecting shaft 403 can be driven to make the driving rod 404 rotate. During this process, through the mutual cooperation of the connecting seat, the two clamping plates 405 and the two buffer blocks 406, the handle can be driven to reciprocate to achieve the effect of adjusting the hand chain hoist, so that it pulls the connecting part 305 and drives the tensiometer 202 through the adjusting assembly 3 until the preset tension is reached and then the motor 401 is turned off for pressure holding detection. During this process, covering the cover plate 101 can prevent the safety hazard caused by the chain breaking, and at the same time the mounting block 103 can avoid the situation of damaging the rest of the structure when the chain breaks.

[0025] When the utility model is in use, open the cover plate 101 and install the hand winch to be tested. Connect one end of the hand winch to be tested to another connecting piece 201. Connect one end of the chain to the connecting part 305, and place the handle of the hand winch between the two clamping plates 405. Drive the clamping plates 405 to move by rotating the threaded rod 407, and cooperate with the two buffer blocks 406 to clamp the handle. After the connection is completed, adjust the telescopic length of the output shaft of the hydraulic push rod 301 to achieve the effect of quickly pulling the chain tight, saving the traditional steps of using the handle of the hand winch to adjust the length of the chain to make it tight. The operation is simple, effectively improving the detection efficiency. After the adjustment is completed, the driving assembly 4 can quickly drive the handle to reciprocate to adjust the chain to apply pressure to the tensiometer 202 until the motor 401 is turned off after reaching the preset tension, and the pressure holding detection is carried out. During this process, covering the cover plate 101 can prevent potential safety hazards caused by the chain breaking, and at the same time, the mounting block 103 can avoid the situation of damage to other structures when the chain breaks.

[0026] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lever hoist tension detection device, characterized in that: include: A box (1), wherein a detachable cover plate (101) is arranged on the top of the box (1), a transparent plate (102) is embedded and installed on the surface of the box (1), a mounting block (103) is fixedly connected to the inner wall of the box (1), ground anchors (2) are arranged on both sides of the box (1), a connecting piece (201) is arranged on the surface of the ground anchor (2), the other end of the connecting piece (201) extends to the interior of the box (1), and a tensile gauge (202) is arranged on the surface of one of the connecting pieces (201); An adjusting component (3), the adjusting component (3) being arranged inside the mounting block (103), and the adjusting component (3) being used for quickly adjusting the tension of the chain of the lever hoist to be tested; A drive assembly (4) is arranged inside the mounting block (103), and the drive assembly (4) is used to cooperate with the handle of the lever hoist to be tested to adjust the lever hoist.

2. A lever hoist tension detection device according to claim 1, characterized in that: The adjustment assembly (3) comprises a hydraulic push rod (301) arranged inside the mounting block (103), one end of the hydraulic push rod (301) is fixedly connected to a connecting rod (302), and the other end of the connecting rod (302) passes through the mounting block (103) and is fixedly connected to the other end of the dynamometer (202).

3. A lever hoist tension detection device according to claim 2, characterized in that: The output shaft end of the hydraulic push rod (301) is fixedly connected to a mounting seat (303), the top of the mounting seat (303) is fixedly connected to a mounting rod (304), and the upper end of the mounting rod (304) passes through the mounting block (103) and is fixedly connected to a connecting portion (305).

4. The lever hoist tension detection device according to claim 1, characterized in that: The driving assembly (4) comprises a motor (401) arranged inside the mounting block (103); an output shaft of the motor (401) passes through the mounting block (103) and is fixedly connected to a rotating disk (402); a connecting shaft (403) is eccentrically fixedly connected to the top of the rotating disk (402); and a driving rod (404) is rotatably disposed on the surface of the connecting shaft (403).

5. A lever hoist tension detection device according to claim 4, characterized in that: The other end of the driving rod (404) is hinged with a connecting seat, and the other end of the connecting seat is provided with two symmetrically distributed clamping plates (405), wherein the top of one of the clamping plates (405) is fixedly connected to the bottom of the driving rod (404), and the opposite sides of the two clamping plates (405) are fixedly connected with buffer blocks (406).

6. A lever hoist tension detection device according to claim 5, characterized in that: A threaded rod (407) is rotatably connected to the surface of the connection seat, and the upper end of the threaded rod (407) is threadedly penetrated through another clamping plate (405) and is fixedly connected to a knob.

7. A lever hoist tension detection device according to claim 6, characterized in that: A limiting rod (408) is fixedly connected to the surface of one of the clamping plates (405), and the other end of the limiting rod (408) passes through the other clamping plate (405) and is slidably connected to the inner wall of the clamping plate (405).

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