An electric hoist detection device and detection method

Abstract

A kind of electric hoist detection device and detection method, first machine table and second machine table are connected by rack docking plate, the first machine table is equipped with the pull seat for being connected with electric hoist, the second machine table is equipped with the loop chain tensioning device movable on the second machine table, the connecting end of the first machine table and the second machine table is equipped with first middle section hanging hole side plate and second middle section hanging hole side plate, recess is formed between the first middle section hanging hole side plate and the second middle section hanging hole side plate, loop chain connecting mechanism is equipped in the recess, the head end of the loop chain is connected with loop chain connecting mechanism after passing electric hoist, the tail end of the loop chain is connected with loop chain connecting mechanism after passing loop chain tensioning device.Electric hoist is driven by itself, drives loop chain connecting mechanism to move, so that each chain link of loop chain is stressed, so as to set the stress condition of loop chain in advance, avoid that electric hoist for climbing frame can appear loop chain chain link burst or other mechanical problems in actual use process.

Description

[Technical Field]

[0001] This invention relates to the field of construction, and in particular to an electric hoist detection device and detection method. [Background Technology]

[0002] Electric hoists for climbing scaffolds are characterized by their compact structure, ease of use, reliable braking, and simple maintenance. They are particularly suitable for lifting climbing scaffolds and formwork in the construction engineering field.

[0003] In actual use, electric hoists used for climbing scaffolds may experience chain breakage or other mechanical problems, leading to safety hazards in the scaffold structure, affecting construction safety, and delaying the construction period.

[0004] Therefore, it is essential to conduct necessary tests on electric hoists before they leave the factory. [Summary of the Invention]

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a compact and easy-to-use electric hoist detection device and method that solves the problems of electric hoists being directly introduced into construction sites without inspection, leading to safety hazards and affecting construction schedules.

[0006] To address the above problems, the present invention adopts the following technical solution:

[0007] An electric hoist detection device includes a main body, on which a first platform and a second platform are provided. The first platform and the second platform are connected by a frame docking plate. The first platform is provided with a tie seat for connecting to the electric hoist. The second platform is provided with a chain tensioning device that can move on the second platform. The connecting ends of the first platform and the second platform are provided with a first middle section hanging hole side plate and a second middle section hanging hole side plate. The first middle section hanging hole side plate and the second middle section hanging hole side plate are provided with a plurality of first hanging holes. A groove is formed between the first middle section hanging hole side plate and the second middle section hanging hole side plate. A chain connecting mechanism is provided in the groove. The chain connecting mechanism is provided with a second hanging hole. A load-bearing pin passes through the first hanging hole and the second hanging hole to restrict the movement of the chain connecting mechanism. The head end of the chain passes around the electric hoist and connects to the chain connecting mechanism. The tail end of the chain passes around the chain tensioning device and connects to the chain connecting mechanism.

[0008] Preferably, the tie seat includes a tie steel plate welded to the first machine base and tie seat side plates. A gap is provided between the tie seat side plates, and a gravity sensor is installed in the gap and fixed to the tie seat side plates by a load-bearing pin. The electric hoist is hung on the gravity sensor, and tie seat side plate reinforcing angle plates are provided on both sides of the tie seat side plates.

[0009] Preferably, the chain tensioning device includes a limiting device and a first chain connecting device. The limiting device includes a tensioning base plate, a hammer assembly, a tensioning wrench assembly, and a limiting base plate. The first chain connecting device includes a limiting slot plate, a compression spring, and a first hanging wheel. The limiting slot plate is disposed on the limiting base plate, and the limiting base plate is disposed on the tensioning base plate. One end of the compression spring is provided with a first compression spring plate, and the other end is provided with a second compression spring plate. The compression spring is disposed on the limiting slot plate through the first compression spring plate. The pull rod is connected to the second compression spring plate and... The second machine base has a first edge and a second edge, and a passageway is provided between the first edge and the second edge. The first edge and the second edge are each provided with a slide rail limiting plate and a slide rail cover plate. The slide rail limiting plate and the slide rail cover plate form a slide rail with the first edge and the second edge respectively. Multiple clamping plates are provided in the passageway. The tensioning wrench assembly moves the tensioning base plate back and forth along the slide rail by abutting against the clamping plates. The clamping hammer assembly restricts the movement of the tensioning base plate by abutting against the clamping plates.

[0010] Preferably, the hammer assembly includes a first hammer side plate, a second hammer side plate, and a main hammer. A first limiting post is connected between the first hammer side plate and the second hammer side plate. The main hammer is disposed between the first hammer side plate and the second hammer side plate and abuts against the first limiting post. The main hammer is provided with a first tooth and a second tooth, and a tooth groove is formed between the first tooth and the second tooth. The locking plate is snapped into the tooth groove to restrict the movement of the tensioning base plate.

[0011] Preferably, the tensioning wrench assembly includes a first tensioning wrench side plate, a second tensioning wrench side plate, and a main tensioning wrench. A second limiting post is connected between the first and second tensioning wrench side plates. The main tensioning wrench is positioned between the first and second tensioning wrench side plates and abuts against the second limiting post. Each of the first and second tensioning wrench side plates has a wrench hole, and the main tensioning wrench has a wrench hole. A clamping pin passes through the wrench hole and the wrench hole, allowing the main tensioning wrench to be movably connected between the first and second tensioning wrench side plates. One end of the main tensioning wrench has a top finger. The main tensioning wrench rotates around the clamping pin, thereby driving the top finger to abut against the clamping plate and causing the tensioning base plate to move back and forth along the slide rail direction.

[0012] Preferably, the chain connection mechanism includes a connecting section, a first guide chain section, and a second guide chain section. The second hanging hole is disposed on the connecting section. The load-bearing pin passes through the first hanging hole and the second hanging hole and moves through the connecting section. One end of the connecting section is pivotally connected to the first guide chain section, and the other end of the connecting section is pivotally connected to the second guide chain section. The head end of the chain passes around the electric hoist and is connected to the first guide chain section, and the tail end of the chain passes around the first pulley and is connected to the second guide chain section.

[0013] Preferably, the first sprocket includes a first auxiliary sprocket and a second auxiliary sprocket, the second guide chain includes a first sprocket and a second sprocket, the tail end of the chain passes sequentially around the first auxiliary sprocket, the first sprocket and the second auxiliary sprocket, and the tail end of the chain is hooked onto the second sprocket by a hook.

[0014] Preferably, the first guide chain section includes a first guide wheel and a second guide wheel, and the head end of the chain passes through the electric hoist, the first guide wheel and the electric hoist in sequence, and the head end of the chain is hung on the second guide wheel by a hook.

[0015] Preferably, the first edge and the second edge are further provided with baffles, which abut against one end of the slide groove limiting plate and the tensioning bottom plate, respectively.

[0016] A method for detecting an electric hoist, characterized by comprising the following steps:

[0017] 1. Connect the first and second machine frame docking plates with bolts and nuts, and fix the foot connecting plates with bolts to fix the whole body.

[0018] 2. Place the tensioning base plate into the slide rail, and install the main locking hammer, main pulling wrench, limit slot plate, compression spring, first compression spring plate, second compression spring plate and first hanging wheel in the corresponding positions.

[0019] 3. Connect the gravity sensor to the tie rod.

[0020] 4. Remove the electric hoist from the packing strap, connect the motor to the gravity sensor, then pull the chain fully open, and then pass the head end of the chain through the electric hoist, the first guide wheel and the electric hoist in sequence, and finally hang it on the second guide wheel with a hook.

[0021] 5. The tail end of the chain is sequentially wound around the first auxiliary pulley, the first sprocket, and the second auxiliary pulley, and finally hooked onto the second sprocket. Then, the tensioning plate is pushed against the clamping plate to tighten the chain. If any twisting or overturning of the chain is found, the chain needs to be straightened.

[0022] 6. Push the main pull wrench to rotate it around the clamping plate pin, causing the top finger to hold the clamping plate and move the tensioning base plate, gradually tightening the chain and continuously compressing the spring until the chain connecting mechanism is fully inserted into the groove, locking the tooth groove of the main clamping hammer into the clamping plate, and then inserting the clamping plate pin to lock the main clamping hammer. Align the second hanging hole of the connecting section with the first hanging hole, and then insert the load-bearing pin into the first and second hanging holes to complete the installation.

[0023] 7. Use a stiff-bristled brush to initially remove debris from the chain surface, and visually inspect the chain links for any obvious damage.

[0024] 8. After the electric hoist is connected and started, and tensioned to 5 tons without any abnormalities and then stopped, readjust the unloading until the lifting pin can be removed. Then apply oil to the chain for maintenance. After maintenance, use wire to bind the chain (to prevent the chain from twisting or turning during packing). After unloading the electric hoist, repackage it.

[0025] 9. If any abnormality occurs during the tensioning process, remotely stop the machine. If a broken chain is confirmed, take repair measures. Purchase a spare chain link with no weld at the broken end. Use a vise and adjustable wrench to clamp the chain link and rotate it to offset the broken end. Place the chain link to be repaired into the machine, then rotate the broken end back to its original position and align it. After alignment, preheat and weld it. After the repair is completed, allow it to cool naturally and then repeat the testing procedure in step 3 above.

[0026] 10. Clean the test bench and repeat the next test procedure.

[0027] The beneficial effects of the electric hoist detection device and detection method of the present invention are as follows:

[0028] This invention discloses an electric hoist testing device and method. By horizontally placing the first and second machine platforms, the testing difficulty is reduced, and installation is extremely convenient. Through the installation of a chain tensioning device and a chain connecting mechanism, the chain is connected end-to-end. The connecting section is connected to the first and second middle section hanging hole side plates via a load-bearing pin. Driven by the electric hoist itself, the chain connecting mechanism moves, thereby subjecting each chain link to force. This pre-sets the chain's stress condition, preventing chain link breakage or other mechanical problems that may occur during actual use.

[0029] The following will further explain the concept, specific structure and effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

[0030] [Image Description]

[0031] Figure 1 This is a schematic diagram of the present invention;

[0032] Figure 2 This is a three-dimensional view of the chain tensioning device;

[0033] Figure 3 This is a right view of the chain tensioning device;

[0034] Figure 4 This is a top view of the chain linkage mechanism;

[0035] Figure 5 This is a three-dimensional view of the chain linkage mechanism;

[0036] Figure 6 This is a schematic diagram of the second machine.

[0037] Figure 7 for Figure 1 Enlarged view of a portion at point A;

[0038] Body 100; First machine base 110; Second machine base 120; Frame docking plate 130; Electric hoist 99; Tie seat 131; Chain 98; First middle section hanging hole side plate 141; Second middle section hanging hole side plate 151; First hanging hole 153; Groove 154; Second hanging hole 201; Load-bearing pin 1315; Tie steel plate 1311; Tie seat side plate 1312; Gap 1313; Gravity sensor 1314;

[0039] 1316 Reinforcing angle plate of tie seat side plate; 301 Tensioning base plate; 302 Limiting base plate; 303 Limiting slot plate; 304 Compression spring; 305 First hanging wheel; 306 First compression spring plate; 307 Second compression spring plate; 308 Pull rod; 123 First edge; 124 Second edge; 125 Passageway; 126 Slide groove limiting plate; 127 Slide groove cover plate; 128 Slide rail; 129 Clamping plate; 401 First clamping hammer side plate; 402 Second clamping hammer side plate; 403 Main clamping hammer; 40 First limiting post. 4; First tooth 405; Second tooth 406; Tooth socket 407; First tension wrench side plate 501; Second tension wrench side plate 502; Main tension wrench 503; Second limit post 504; Wrench hole 1 505; Wrench hole 3 506; Clamping pin 507; Top finger 5031; Connecting joint 601; First guide chain section 701; Second guide chain section 801; First auxiliary hanging wheel 3051; Second auxiliary hanging wheel 3052; First guide wheel 702; Second guide wheel 703; Stop bar 97

Detailed Implementation Methods

[0040] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" or "several" means two or more.

[0042] Please see Figure 1-7 , Figure 1-7 The preferred implementation method of the electric hoist detection device and detection method disclosed is as follows:

[0043] An electric hoist detection device includes a body 100, on which a first platform 110 and a second platform 120 are provided. The first platform 110 and the second platform 120 are connected by a frame docking plate 130. In this embodiment, the first platform 110 and the second platform 120 are relatively long platforms, and the connection between the first platform 110 and the second platform 120 is made by the frame docking plate 130, so that the first platform 110 and the second platform 120 are integrated into one unit.

[0044] Specifically, the first machine base 110 is provided with a tie seat 131 for connecting to the electric hoist 99. In this embodiment, the tie seat 131 includes a tie steel plate 1311 and a tie seat side plate 1312 welded to the first machine base 110. A gap 1313 is provided between the tie seat side plates 1312. A gravity sensor 1314 is installed in the gap 1313 and fixed to the tie seat side plate 1312 by a load-bearing pin 1315. The electric hoist 99 is hung on the gravity sensor 1314. Tie seat side plate reinforcing angle plates 1316 are provided on both sides of the tie seat side plate 1312. In use, the gravity sensor 1314 can detect the pulling force of the electric hoist 99. The tie steel plate 1311, the tie seat side plate 1312, and the tie seat side plate reinforcing angle plates 1316 are all connected by welding. The tie seat side plate reinforcing angle plates 1316 enhance the overall rigidity of the tie seat 131. No separation will occur when measuring tensile force.

[0045] Specifically, the second machine base 120 is equipped with a chain tensioning device that can move on the second machine base 120. In this embodiment, the chain tensioning device includes a limiting device and a first chain connecting device. The limiting device includes a tensioning base plate 301, a hammer assembly, a tensioning wrench assembly, and a limiting base plate 302. The first chain connecting device includes a limiting slot plate 303, a compression spring 304, and a first hanging wheel 305. The limiting slot plate 303 is disposed on the limiting base plate 302, and the limiting base plate 302 is disposed on the tensioning base plate 301. One end of the compression spring 304 is provided with a first compression spring plate 306, and the other end is provided with a second compression spring plate 307. The compression spring 304 is disposed on the limiting slot plate 303 through the first compression spring plate 306. The pull rod 308 is connected to the second compression spring. Plate 307 connects to and passes through compression spring 304 and first compression spring plate 306 and is connected to first hanging wheel 305. The second machine base 120 is provided with first edge 123 and second edge 124. A passage 125 is provided between the first edge 123 and second edge 124. A slide groove limiting plate 126 and a slide groove cover plate 127 are provided on the first edge 123 and the second edge 124 respectively. The slide groove limiting plate 126 and the slide groove cover plate 127 form a slide rail 128 with the first edge 123 and the second edge 124 respectively. Multiple clamping plates 129 are provided in the passage 125. The tensioning wrench assembly moves the tensioning base plate 301 back and forth along the slide rail 128 by abutting against the clamping plates 129. The clamping hammer assembly restricts the movement of the tensioning base plate 301 by abutting against the clamping plates 129. During operation, the tensioning base plate 301 is inserted into the slide rail 128 and slides back and forth within the slide rail 128. The tensioning base plate 301 is equipped with a hammer assembly, a tensioning wrench assembly, and a first ring chain connecting device. The ring chain 98 is tightened by sliding the tensioning base plate 301.

[0046] More specifically, the hammer assembly includes a first hammer side plate 401, a second hammer side plate 402, and a main hammer 403. A first limiting post 404 is connected between the first hammer side plate 401 and the second hammer side plate 402. The main hammer 403 is disposed between the first hammer side plate 401 and the second hammer side plate 402 and abuts against the first limiting post 404. The main hammer 403 is provided with a first tooth 405 and a second tooth 406. A tooth groove 407 is formed between the first tooth 405 and the second tooth 406. The locking plate 129 is snapped into the tooth groove 407 to restrict the movement of the tensioning base plate 301.

[0047] The tensioning wrench assembly includes a first tensioning wrench side plate 501, a second tensioning wrench side plate 502, and a main tensioning wrench 503. A second limiting post 504 connects the first tensioning wrench side plate 501 and the second tensioning wrench side plate 502. The main tensioning wrench 503 is disposed between the first tensioning wrench side plate 501 and the second tensioning wrench side plate 502 and abuts against the second limiting post 504. A wrench hole 50 is provided on both the first tensioning wrench side plate 501 and the second tensioning wrench side plate 502. 5. The main pull wrench 503 is provided with a three-hole wrench 506. The clamping pin 507 passes through the one-hole wrench 505 and the three-hole wrench 506 to make the main pull wrench 503 movably connected between the first pull wrench side plate 501 and the second pull wrench side plate 502. One end of the main pull wrench 503 is provided with a top finger 5031. The main pull wrench 503 rotates around the clamping pin 507, thereby driving the top finger 5031 to abut against the clamping plate 129 and causing the tensioning base plate 301 to move back and forth along the slide rail 128.

[0048] During use, the chain 98 has a certain weight, but it is not taut. At this time, the tensioning wrench assembly is required. The main pull wrench 503 rotates around the clamping pin 507. When rotating, the top finger 5031 abuts against the clamping plate 129, thereby driving the entire tensioning base plate 301 to move, thus gradually tightening the chain 98. At this time, the compression spring 304 is also compressed. When it moves to the appropriate position, the tooth groove 407 of the main clamping hammer 403 is locked on the clamping plate 129, thereby completing the fixing of the tensioning base plate 301 and the tightening of the chain 98.

[0049] More specifically, the first machine base 110 and the second machine base 120 are each provided with a first middle section hanging hole side plate 141 and a second middle section hanging hole side plate 151. The first middle section hanging hole side plate 141 and the second middle section hanging hole side plate 151 are provided with a plurality of first hanging holes 153. A groove 154 is formed between the first middle section hanging hole side plate 141 and the second middle section hanging hole side plate 151. A ring chain connecting mechanism is provided in the groove 154. The ring chain connecting mechanism is provided with a second hanging hole 201. The load-bearing pin 1315 passes through the first hanging hole 153 and the second hanging hole 201 to restrict the movement of the ring chain connecting mechanism.

[0050] In this embodiment, the chain connection mechanism includes a connecting section 601, a first guide chain section 701, and a second guide chain section 801. The second hanging hole 201 is disposed on the connecting section 601. The load-bearing pin 1315 moves through the first hanging hole 153 and the second hanging restriction hole of the connecting section 601. One end of the connecting section 601 is pivotally connected to the first guide chain section 701, and the other end of the connecting section 601 is pivotally connected to the second guide chain section 801.

[0051] In this embodiment, the first guide chain link 701 includes a first guide wheel 702 and a second guide wheel 703. The head end of the chain 98 passes sequentially through the electric hoist 99, the first guide wheel 702, and the electric hoist 99, and finally the head end of the chain 98 is hooked onto the second guide wheel 703. The first hanging wheel 305 includes a first auxiliary hanging wheel 3051 and a second auxiliary hanging wheel 3052. The second guide chain link 801 includes a first sprocket 802 and a second sprocket 803. The tail end of the chain 98 passes sequentially through the first auxiliary hanging wheel 3051, the first sprocket 802, and the second auxiliary hanging wheel 3052, and finally the tail end of the chain 98 is hooked onto the second sprocket 803. The tail end and head end of the chain 98 are connected by a chain connection mechanism. When the electric hoist 99 starts, the chain connection mechanism will also rotate as the chain 98 rotates. The load-bearing pin 1315 passes through the first hanging hole 153 and the second hanging hole 201 to restrict the movement of the connecting section 601. The load-bearing pin 1315 is blocked by the first hanging hole 153 on the first middle section hanging hole side plate 141 and the second middle section hanging hole side plate 151. Thus, it is possible to observe the working condition of each link of the chain 98 when the electric hoist 99 is working, and whether there is any cracking problem.

[0052] More preferably, the first edge 123 and the second edge 124 are further provided with baffles 97, which abut against one end of the slide rail limiting plate 126 and the tensioning base plate 301, respectively. The baffles 97 are used to prevent the tensioning base plate 301 from disengaging from the slide rail 128 when the clamping plate 129 disengages, thus preventing damage to the equipment and accidental injury.

[0053] A method for detecting an electric hoist, characterized by comprising the following steps:

[0054] 1. Connect the first machine base 110 and the second machine base 120 frame docking plate 130 with bolts and nuts, and fix the foot connecting plate with bolts to fix the body 100 as a whole.

[0055] 2. Place the tensioning base plate 301 into the slide rail 128, and install the main locking hammer 403, the main pulling wrench 503, the limiting slot plate 303, the compression spring 304, the first compression spring plate 306, the second compression spring plate 307 and the first hanging wheel 305 in the corresponding positions.

[0056] 3. Connect the gravity sensor 1314 to the tie base 131.

[0057] 4. Take out the electric hoist 99 from the packing strap, connect the motor to the gravity sensor 1314, then pull the chain 98 all the way out, and then pass the head end of the chain 98 through the electric hoist 99, the first guide wheel 702 and the electric hoist 99 in sequence, and finally hang it on the second guide wheel 703 through the hook.

[0058] 5. The tail end of the chain 98 is sequentially wound around the first auxiliary sprocket 3051, the first sprocket 802 and the second auxiliary sprocket 3052, and finally hooked onto the second sprocket 803. Then, the tensioning base plate 301 is pushed toward the clamping plate 129 to tighten the chain 98. If the chain 98 is found to be twisted or overturned, it needs to be straightened.

[0059] 6. Push the main pull wrench 503 to rotate it around the clamping plate pin 507, so that the top finger 5031 holds the clamping plate 129 and drives the tensioning base plate 301 to move, so that the ring chain 98 gradually tightens and the compression spring 304 is continuously compressed until the ring chain connecting mechanism is completely inserted into the groove 154, so that the tooth groove 407 of the main clamping hammer 403 is inserted into the clamping plate 129, and then the clamping plate pin 507 is inserted to lock the main clamping hammer 403. The second hanging hole 201 of the connecting section 601 is aligned with the first hanging hole 153, and then the load-bearing pin 1315 is inserted into the first hanging hole 153 and the second hanging hole 201 to complete the installation.

[0060] 7. Use a stiff-bristled brush to initially remove debris from the chain surface, and visually inspect the links 98 for any obvious damage.

[0061] 8. After the electric hoist 99 is connected and started, and tensioned to 5 tons without any abnormalities and then stopped, readjust the unloading until the lifting pin can be removed. Then apply oil to the chain for maintenance. After maintenance, use wire to bind the chain (to prevent the chain from twisting or turning during packing). After unloading the electric hoist 99, repackage it.

[0062] 9. If any abnormality occurs during the tensioning process, remotely stop the machine. If it is confirmed that the 98th link of the chain is broken, take repair measures. Purchase a spare chain link with no weld at the broken end. Use a vise and an adjustable wrench to hold the chain link and rotate it to offset the broken end. After inserting the 98th link of the chain to be repaired, rotate it back to its original position and align it. After alignment, preheat and weld it. After the repair is completed, allow it to cool naturally and then repeat the test procedure in step 3 above.

[0063] Clean the test bench and repeat the next test procedure.

[0064] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric hoist detection device, characterized in that: Includes a body (100), on which a first machine platform (110) and a second machine platform (120) are provided. The first machine platform (110) and the second machine platform (120) are connected by a frame docking plate (130). The first machine platform (110) is provided with a tie seat (131) for connecting with an electric hoist (99). The second machine platform (120) is provided with a chain tensioning device that can move on the second machine platform (120). The connecting ends of the first machine platform (110) and the second machine platform (120) are provided with a first middle section hanging hole side plate (141) and a second middle section hanging hole side plate (151). The first middle section hanging hole side plate (141) and the second middle section hanging hole side plate (151) are provided with a plurality of first hanging holes. (153) A groove (154) is formed between the first middle section hanging hole side plate (141) and the second middle section hanging hole side plate (151). A ring chain connecting mechanism is provided in the groove (154). A second hanging hole (201) is provided on the ring chain connecting mechanism. The load-bearing pin (1315) passes through the first hanging hole (153) and the second hanging hole (201) to restrict the movement of the ring chain connecting mechanism. The head end of the ring chain (98) passes around the electric hoist (99) and is connected to the ring chain connecting mechanism. The tail end of the ring chain (98) passes around the ring chain tensioning device and is connected to the ring chain connecting mechanism. The ring chain tensioning device includes a limiting device and a first ring chain connecting device. The limiting device includes a tensioning base plate (301), a hammer assembly, a tensioning wrench assembly, and a limiting base plate. (302) The first chain connection device includes a limiting slot plate (303), a compression spring (304) and a first hanging wheel (305). The limiting slot plate (303) is set on the limiting base plate (302), and the limiting base plate (302) is set on the tensioning base plate (301). One end of the compression spring (304) is provided with a first compression spring plate (306), and the other end is provided with a second compression spring plate (307). The compression spring (304) is set on the limiting slot plate (303) through the first compression spring plate (306). The pull rod (308) is connected to the second compression spring plate (307) and passes through the compression spring (304) and the first compression spring plate (306) and is connected to the first hanging wheel (305). The second machine base (120) is provided with a first edge. (123) and the second edge (124), a passage (125) is provided between the first edge (123) and the second edge (124), and a sliding groove limiting plate (126) and a sliding groove cover plate (127) are provided on the first edge (123) and the second edge (124), respectively forming a slide rail (128) with the first edge (123) and the second edge (124), and multiple clamping plates (129) are provided in the passage (125). The tensioning wrench assembly moves the tensioning base plate (301) back and forth along the slide rail (128) by abutting against the clamping plates (129), and the clamping hammer assembly restricts the movement of the tensioning base plate (301) by abutting against the clamping plates (129).The chain connection mechanism includes a connecting section (601), a first guide chain section (701), and a second guide chain section (801). A second hanging hole (201) is located on the connecting section (601). A load-bearing pin (1315) passes through the first hanging hole (153) and the second hanging hole (201) to restrict the movement of the connecting section (601). One end of the connecting section (601) is pivotally connected to the first guide chain section (701), and the other end is pivotally connected to the second guide chain section (801). The head end of the chain (98) passes over the electric hoist (99) and connects to the first guide chain section (701). The tail end of the chain (98) passes over the first pulley (305) and connects to the second guide chain section (801).

2. The electric hoist detection device according to claim 1, characterized in that: The tie seat (131) includes a tie steel plate (1311) welded to the first machine base (110) and a tie seat side plate (1312). A gap (1313) is provided between the tie seat side plates (1312). A gravity sensor (1314) is set in the gap (1313) and fixed to the tie seat side plate (1312) by a load-bearing pin (1315). The electric hoist (99) is hung on the gravity sensor (1314). Tie seat side plate reinforcing angle plates (1316) are provided on both sides of the tie seat side plate (1312).

3. The electric hoist detection device according to claim 1, characterized in that: The hammer assembly includes a first hammer side plate (401), a second hammer side plate (402), and a main hammer (403). A first limiting post (404) is connected between the first hammer side plate (401) and the second hammer side plate (402). The main hammer (403) is disposed between the first hammer side plate (401) and the second hammer side plate (402) and abuts against the first limiting post (404). The main hammer (403) is provided with a first tooth (405) and a second tooth (406). A tooth groove (407) is formed between the first tooth (405) and the second tooth (406). The locking plate (129) is locked in the tooth groove (407) to restrict the movement of the tensioning base plate (301).

4. The electric hoist detection device according to claim 1, characterized in that: The tension wrench assembly includes a first tension wrench side plate (501), a second tension wrench side plate (502), and a main tension wrench (503). A second limiting post (504) connects the first tension wrench side plate (501) and the second tension wrench side plate (502). The main tension wrench (503) is positioned between the first tension wrench side plate (501) and the second tension wrench side plate (502) and abuts against the second limiting post (504). A wrench hole (505) is provided on both the first tension wrench side plate (501) and the second tension wrench side plate (502). The main pull wrench (503) is provided with three wrench holes (506). The clamping pin (507) passes through the wrench hole (505) and the three wrench holes (506) to make the main pull wrench (503) movably connected between the first pull wrench side plate (501) and the second pull wrench side plate (502). One end of the main pull wrench (503) is provided with a top finger (5031). The main pull wrench (503) rotates around the clamping pin (507) to drive the top finger (5031) to abut against the clamping plate (129) and drive the tensioning base plate (301) to move back and forth along the slide rail (128).

5. The electric hoist detection device according to claim 1, characterized in that: The first sprocket (305) includes a first auxiliary sprocket (3051) and a second auxiliary sprocket (3052), and the second guide chain link (801) includes a first sprocket (802) and a second sprocket (803). The tail end of the ring chain (98) passes around the first auxiliary sprocket (3051), the first sprocket (802) and the second auxiliary sprocket (3052) in sequence. The tail end of the ring chain (98) is hooked onto the second sprocket (803) by a hook.

6. The electric hoist detection device according to claim 1, characterized in that: The first guide chain section (701) includes a first guide wheel (702) and a second guide wheel (703). The head end of the ring chain (98) passes through the electric hoist (99), the first guide wheel (702) and the electric hoist (99) in sequence. The head end of the ring chain (98) is hung on the second guide wheel (703) by a hook.

7. The electric hoist detection device according to claim 1, characterized in that: The first edge (123) and the second edge (124) are also provided with a stop bar (97), which abuts against one end of the slide groove limiting plate (126) and the tensioning bottom plate (301), respectively.

8. A method for detecting an electric hoist, characterized in that, Includes the following steps:

1. Connect the first machine base (110) and the second machine base (120) frame docking plate (130) with bolts and nuts, and fix the foot connecting plate with bolts to fix the body (100) as a whole.

2. Place the tensioning base plate (301) into the slide rail (128), and install the main clamping hammer (403), the main pull wrench (503), the limiting slot plate (303), the compression spring (304), the first compression spring plate (306), the second compression spring plate (307) and the first hanging wheel (305) in the corresponding positions; 3. Connect the gravity sensor (1314) to the tie rod (131); 4. Take out the electric hoist (99) from the packing strap, connect the motor to the gravity sensor (1314), then pull the chain (98) open completely, and then pass the head end of the chain (98) through the electric hoist (99), the first guide wheel (702) and the electric hoist (99) in sequence, and finally hang it on the second guide wheel (703) with a hook.

5. The tail end of the chain (98) is sequentially wound around the first auxiliary sprocket (3051), the first sprocket (802), and the second auxiliary sprocket (3052), and finally hooked onto the second sprocket (803) through a hook. Then, the tensioning base plate (301) is pushed toward the clamping plate (129) to tighten the chain (98). If the chain (98) is found to be twisted or overturned, it is necessary to straighten the chain (98).

6. Push the main pull wrench (503) to make the main pull wrench (503) rotate around the clamping plate pin (507), so that the top finger (5031) holds the clamping plate (129) and drives the tensioning base plate (301) to move, so that the ring chain (98) gradually tightens and the compression spring (304) is continuously compressed until the ring chain connecting mechanism is completely inserted into the groove (154), and the tooth groove (407) of the main clamping hammer (403) is inserted into the clamping plate (129). Then, insert the clamping plate pin (507) to lock the main clamping hammer (403). The second hanging hole (201) of the connecting section (601) is aligned with the first hanging hole (153). Then, insert the load-bearing pin (1315) into the first hanging hole (153) and the second hanging hole (201) to complete the installation.

7. Use a stiff-bristled brush to initially remove debris from the surface of the chain, and visually inspect the links (98) for any obvious damage.

8. After the electric hoist (99) is connected and started, and tensioned to 5 tons without any abnormality, the machine is stopped. The unloading is readjusted until the lifting pin can be removed. Then, the chain is oiled for maintenance. After maintenance, the chain needs to be tied with wire (to prevent the chain from twisting and turning during packaging). After the electric hoist (99) is removed, it is repackaged.

9. If there is any abnormality in the tensioning process, the machine will be stopped remotely. If it is confirmed that the ring chain (98) is broken, repair measures will be taken. Purchase a spare chain buckle with no welded break, use a vise and adjustable wrench to hold the chain buckle and rotate it to offset the break, put in the chain buckle of the ring chain (98) to be repaired, and then rotate the break back to align. After alignment, preheat and weld. After the repair is completed, wait for it to cool naturally and then repeat the test process of the above steps (3).

10. Clean the test bench and repeat the next test procedure.

Images