A rescue device

Abstract

The application provides a lifting assisting device in the technical field of lifting assisting devices, which comprises a cylinder body with a containing cavity, a guide rod slidably connected in the containing cavity, a top cover arranged at the upper end of the cylinder body, a connecting rod rotatably connected to the top cover, the end of the connecting rod extending into the containing cavity abutting against the guide rod, a positioning boss arranged on the guide rod, a stepped platform arranged on the cylinder body below the positioning boss, a compression spring sleeved on the guide rod between the positioning boss and the stepped platform, a top rod connected to the end of the guide rod away from the top cover, a limiting boss arranged on the end of the top rod extending out of the cylinder body, the limiting boss abutting against the cylinder body, and an external thread arranged on the outside of the lower end of the cylinder body; only a corresponding threaded interface needs to be arranged on the lifted module structure, the structure is simple, the occupied space is small, and the lifted module with limited structural space is especially suitable. Meanwhile, the lifting assisting device converts the sliding friction force borne by the lifted module into static pressure, and avoids scratching and damaging the surface of the lifted module.

Description

Technical Field

[0001] This invention belongs to the field of extraction aid technology, and specifically relates to an extraction aid device. Background Technology

[0002] Automated stamping equipment typically consists of numerous functional modules. To facilitate the transfer of functions between these modules, various functional blocks are usually installed on the back of the base. When functional modules need to be disassembled or leveled, the connectors have significant separation forces, making it difficult to pull out or separate the modules. Often, an auxiliary pulling device is required for this operation.

[0003] In the prior art, patent CN114406941A discloses a tile-type subarray insertion and removal assist device, including a base, pressure plate, long handle, short handle, connecting rod, etc. By fixing the base and pressure plate to the template to be removed, the insertion and removal problem of tile-type subarrays in dense installation can be solved. Patent CN109167234B discloses a parallel interlocking printed circuit board removal assist device, including an adapter block, handle, removal assist arm, etc. By fixing the device to a reinforcing frame and fixing the reinforcing frame to the printed circuit board, parallel separation and reliable separation of connectors between parallel interlocking printed circuit boards can be achieved. Patent CN107511790A discloses a detachable component push and pull assist device, including a fixed base, handle, hook-shaped component, etc. It requires setting hook-shaped structure and rotating shaft on the component to effectively realize the functions of detachment and push and pull assist.

[0004] The existing technology has the following problems: it requires complex installation interfaces on the template to be pulled out, which occupies a large amount of structural space. This is no longer suitable for situations where the template structure is compact, the pulling range is limited, and the templates are arranged in multiple rows and columns. To solve the problem of limited space in structurally constrained modules, threaded holes are often reserved in the module design, and pulling is achieved by pulling screws. This method is simple in structure and easy to implement, but it has a significant drawback: the pulling screw can damage the template surface during rotation. This can result in scratches on the outer surface or, more seriously, chips on the surface. If these chips fall into the threaded holes or connecting blocks, they can damage the threads or the connecting surfaces when the screw is tightened, leading to serious consequences. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this invention is to solve the shortcomings of the prior art, and to solve the technical problems of limited lifting space, inconvenience of lifting, and easy damage to products in the prior art, and to provide a lifting aid device that is convenient for lifting and does not easily damage the product.

[0006] The objective of this invention is achieved as follows: A lifting aid device includes a cylindrical body with a receiving cavity, a guide rod slidably connected within the receiving cavity, a top cover at the upper end of the cylindrical body, a connecting rod rotatably connected to the top cover, one end of the connecting rod extending into the receiving cavity abutting against the guide rod, a positioning boss on the guide rod, a stepped platform on the cylindrical body below the positioning boss, a compression spring fitted on the guide rod between the positioning boss and the stepped platform, a top rod connected to the end of the guide rod away from the top cover, a limiting boss at the end of the top rod extending out of the cylindrical body, the limiting boss abutting against the cylindrical body, and an external thread on the outer side of the lower end of the cylindrical body.

[0007] During the pulling operation, the lower end of the cylinder is vertically aligned with the pre-drilled threaded hole of the module to be pulled. The cylinder is rotated so that it screws into the pre-drilled threaded hole. Then, the connecting rod is rotated downwards, pushing the guide rod. The guide rod compresses the compression spring and pushes the push rod. The push rod contacts the workpiece base and transmits vertical pressure to the workpiece base. At this time, the cylinder is subjected to a reaction pull force. The reaction pull force causes the cylinder to pull the module to be pulled outwards together, so that the template to be pulled is pulled out from the product base. After the pulling is completed, the connecting rod is rotated in the opposite direction, and the compression spring returns to its original position. Under its action, the push rod leaves the product base and returns to its initial position. Compared with the prior art, the beneficial effects of this invention are as follows: the combined arrangement of the connecting rod, guide rod, compression spring, cylinder and push rod makes lifting convenient. It only applies vertical pressure to the product base to quickly lift the lifting template, avoiding the damage and scratches caused by the rotational friction of the product base in traditional lifting methods. At the same time, it requires very little lifting space. Even when the lifting space is limited, it can still lift the module to be lifted well. It has high flexibility and can be applied to the lifting work of various mechanical components.

[0008] To enable the handle to control whether the connecting rod can rotate, the top cover has an annular groove and a slot communicating with the annular groove. The connecting rod is equipped with a handle, and a lever is slidably connected to the handle. The lever can slide from the slot into the annular groove. When the lever slides into the annular groove, rotating the handle allows the lever to slide along the annular groove.

[0009] To enable the connection of the lever, the handle has a mounting groove and a fixing groove that communicates with the mounting groove. A horizontal mounting block is provided in the fixing groove, and a tension spring is provided in the mounting groove. One end of the tension spring is connected to the lever, and the other end of the tension spring is connected to the horizontal mounting block.

[0010] To ensure that the handle is limited and cannot rotate when the lever is engaged in the slot, and that the handle is no longer limited when the lever slides into the annular groove, allowing the handle to rotate and drive the connecting rod, the handle has a slot. The slot is located at the mounting groove, and the lever can pass through the slot and engage in the slot. The handle also has a check boss. When the lever is moved away from the horizontal mounting block and the handle is rotated, the lever can slide into the annular groove and abut against the check boss.

[0011] In order to control the extension stroke of the top rod, two guide grooves are symmetrically opened on the outer side of the end of the cylinder near the top cover. The guide rod is provided with a guide platform that can cooperate with the guide groove, and the guide platform can slide along the guide groove.

[0012] In order to effectively reduce the wear between the connecting rod and the guide rod during rotation, the upper end of the guide platform is provided with a wear-reducing end, which is spherical.

[0013] To prevent the connecting rod from falling off the top cover, a semi-circular pressure plate is fitted on the connecting rod between the handle and the top cover, and the semi-circular pressure plate is connected to the top cover.

[0014] As a further improvement of the present invention, the upper end of the guide groove is provided with a mounting flange, the mounting flange has a plurality of screw holes, and the top cover is provided with threaded holes that correspond one-to-one with the screw holes.

[0015] As a further improvement of the present invention, the connecting rod is provided with a square shaft, the handle is connected to the square shaft by a fastening screw, and the handle is also provided with a support rib.

[0016] As a further improvement of the present invention, the top cover is also provided with a number of weight-reducing holes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structural principle of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the pull-out module of the present invention.

[0019] Figure 3 This is a schematic diagram of the guide rod structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the cylindrical structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the top cover structure of the present invention. Figure 1 .

[0022] Figure 6 This is a schematic diagram of the top cover structure of the present invention. Figure 2 .

[0023] Figure 7 This is a schematic diagram of the handle structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the connecting rod structure of the present invention.

[0025] Among them, 1 is the top rod, 101 is the limiting boss, 2 is the guide rod, 201 is the positioning boss, 202 is the guide table, 203 is the anti-friction end, 3 is the compression spring, 4 is the cylinder, 401 is the receiving cavity, 402 is the stepped platform, 403 is the external thread, 404 is the guide groove, 405 is the mounting flange, 406 is the screw hole, 5 is the handle, 501 is the mounting groove, 502 is the fixing groove, 503 is the horizontal mounting block, 504 is the slot, 505 is the anti-reverse boss, 506 is the support rib, 507 is the baffle, 6 is the semi-circular pressure plate, 7 is the top cover, 701 is the annular slide groove, 702 is the slot, 703 is the threaded hole, 704 is the weight reduction hole, 8 is the connecting rod, 801 is the square shaft, 802 is the fastening screw, 9 is the lever, 901 is the lever head, 902 is the limiting shaft, 10 is the tension spring, 11 is the compression spring, 11 is the compression spring, 12 is the compression spring, 13 is the compression spring, 14 is the compression spring, 15 is the compression spring, 16 is the compression spring, 17 is the compression spring, 18 is the compression spring, 19 is the compression spring, 10 is the compression spring, 11 is the compression spring, 12 is the compression spring, 19 is the compression spring, 10 is the compression spring, 11 is the compression spring, 19 is the compression spring, 10 ... Reserved threaded holes. Implementation

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] like Figures 1-8The illustrated extraction aid device includes a cylindrical body 4 with a receiving cavity 401. A guide rod 2 is slidably connected to the receiving cavity 401. A top cover 7 is provided at the upper end of the cylindrical body 4. The top cover 7 also has several weight-reducing holes 704. A connecting rod 8 is rotatably connected to the top cover 7 and is threaded to the top cover 7. One end of the connecting rod 8 extends into the receiving cavity 401 and abuts against the guide rod 2. Two guide grooves 404 are symmetrically opened on the outer side of the cylindrical body 4 near the top cover 7. A guide platform 202 is provided on the guide rod 2 that can cooperate with the guide grooves 404. The guide platform 202 can slide along the guide grooves 404. A mounting flange 405 is provided on the cylindrical body 4 at the upper end of the guide grooves 404. Several screw holes 406 are opened on the mounting flange 405. The top cover 7 has threaded holes 703 that correspond one-to-one with the screw holes 406. The upper end of the guide platform 202 has a friction-reducing end 203, which is spherical. The guide rod 2 has a positioning boss 201. The cylinder 4 below the positioning boss 201 has a stepped platform 402. A compression spring 3 is fitted on the guide rod 2 between the positioning boss 201 and the stepped platform 402. The end of the guide rod 2 away from the top cover 7 is connected to a top rod 1. The top rod 1 and the guide rod 2 are threaded together. The end of the top rod 1 extending out of the cylinder 4 has a limiting boss 101 that can abut against the cylinder 4. The lower outer side of the cylinder 4 has an external thread 403. The top cover 7 has an annular groove 701 and a slot 70 connected to the annular groove 701. 2. A handle 5 is provided on the connecting rod 8. A lever 9 is slidably connected to the handle 5. The lever 9 can slide from the slot 702 into the annular groove 701. When the lever 9 slides into the annular groove 701, the handle 5 is rotated, and the lever 9 can slide along the annular groove 701. The lever 9 consists of a lever head 901 and a limiting shaft 902. The lever head 901 and the limiting shaft 902 are threaded together. The lever head 901 is above the limiting shaft 902. The handle 5 has an installation groove 501 and a fixing groove 502 that communicates with the installation groove 501. A horizontal mounting block 503 is provided in the fixing groove 502. A tension spring 10 is provided in the installation groove 501. One end of the tension spring 10 is connected to the lever 9, and the other end of the tension spring 10 is connected to the horizontal mounting block. The handle 5 is connected to the top cover 7. The handle 5 is also provided with a baffle 507 on the lower side, which can cover the mounting groove 501. The handle 5 has a slot 504, which is located at the mounting groove 501. The lever 9 can pass through the slot 504 and be inserted into the slot 702. The handle 5 is also provided with a backstop boss 505. When the lever 9 is moved away from the horizontal mounting block 503, the lever 9 can slide into the annular groove 701 and abut against the backstop boss 505. The handle 5 is also provided with a support rib 506. A semi-circular pressure plate 6 is fitted on the connecting rod 8 between the handle 5 and the top cover 7. The semi-circular pressure plate 6 is connected to the top cover 7. A square shaft 801 is provided on the connecting rod 8. The handle 5 is connected to the square shaft 801 by a fastening screw 802.

[0028] In the initial state of the tension spring 10 of this invention, the limiting shaft 902 of the lever 9 is in the slot 702. When performing the pulling operation, the lower end of the cylinder 4 is vertically aligned with the reserved threaded hole 11 of the module to be pulled, and the handle 5 is rotated. In the circumferential direction, the limiting shaft 902 is restricted by the slot 702, and the handle 5 cannot rotate the connecting rod 8. The handle 5 transmits force to the cylinder 4 through the connecting rod 8 and the top cover 7, that is, the cylinder 4 will rotate with the handle 5. The external thread 403 at the lower end of the cylinder 4 will be screwed into the reserved threaded hole 11 in the template to be pulled. After the external thread 403 is fully screwed into the reserved threaded hole 11, the lever 9 is manually turned and rotated slightly. Move handle 5 to slide the limiting shaft 902 from the slot 702 into the annular groove 701, so that the limiting shaft 902 abuts against the anti-reverse boss 505, and the tension spring 10 is stretched. Then rotate handle 5, and the lever 9 slides along the annular groove 701. The rotation of handle 5 drives the connecting rod 8 to rotate. The connecting rod 8 rotates downward and pushes the guide rod 2. The guide table 202 moves along the guide groove 404. The guide rod 2 compresses the compression spring 3 and pushes the push rod 1. The push rod 1 is pushed out and abuts against the workpiece base and transmits vertical pressure to the functional module. At this time, the cylinder 4 will be subjected to a reaction pull force. The reaction pull force makes The cylinder 4 pulls the module to be pulled outwards together, causing the module to be pulled out from the product base. After the pulling is completed, the handle 5 is rotated in the opposite direction. Under the restoring force of the compression spring 3, the push rod 1 leaves the product base and returns to its initial position inside the cylinder 4. Finally, the lever 9 is disengaged from the anti-reverse boss 505. Under the restoring force of the tension spring 10, the limiting shaft 902 returns to the slot 702 and is limited. Continuing to rotate the handle 5 in the opposite direction, the handle 5 cannot rotate the connecting rod 8. The cylinder 4 rotates in the opposite direction with the handle 5, and the lower end of the cylinder 4 is screwed out from the module to be pulled out. In this invention, the connecting rod 8, guide rod 2, and compression spring 3 are used. The combined arrangement of the cylinder 4 and the top rod 1 facilitates easy lifting. It applies only vertical pressure to the product base to quickly lift the lifting template, avoiding the damage and scratches caused by the rotational friction of the product base in traditional lifting methods. At the same time, it requires very little lifting space, and can effectively lift the module to be lifted even when the lifting space is limited, making it highly adaptable. The combined arrangement of the handle 5, top cover 7, guide rod 2, lever 9, tension spring 10, etc., makes operation labor-saving. By operating the handle 5 and lever 9, lifting can be done conveniently and quickly. The lifting force is uniform and highly flexible, and it can be applied to the lifting of various mechanical components.

[0029] This invention patent is not limited to the above embodiments. Based on the technical solutions disclosed in this invention patent, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this invention patent.

Claims

1. A traction device, characterized in that: The device includes a cylindrical body with a receiving cavity, within which a guide rod is slidably connected. A top cover is provided at the upper end of the cylindrical body, and a connecting rod is rotatably connected to the top cover. One end of the connecting rod extending into the receiving cavity abuts against the guide rod. A positioning boss is provided on the guide rod, and a stepped platform is provided on the cylindrical body below the positioning boss. A compression spring is fitted onto the guide rod between the positioning boss and the stepped platform. A top rod is connected to the end of the guide rod away from the top cover, and a limiting boss is provided at the end of the top rod extending out of the cylindrical body. The limiting boss abuts against the cylindrical body. A [further details about the device are missing]. It has external threads; the top cover has an annular groove and a slot communicating with the annular groove; the connecting rod has a handle, and a lever is slidably connected to the handle; the lever can slide from the slot into the annular groove; when the lever slides into the annular groove, the handle is rotated, and the lever can slide along the annular groove; the handle has an installation groove and a fixing groove communicating with the installation groove; a horizontal mounting block is provided in the fixing groove; a tension spring is provided in the installation groove; one end of the tension spring is connected to the lever, and the other end of the tension spring is connected to the horizontal mounting block.

2. The assisted extraction device according to claim 1, characterized in that: The handle has a slot, which is located at the mounting slot. The lever can pass through the slot and be engaged in the slot. The handle is provided with a backstop boss. When the lever is moved away from the horizontal mounting block and the handle is rotated, the lever can slide into the annular groove and abut against the backstop boss.

3. The assisted extraction device according to claim 2, characterized in that: Two guide grooves are symmetrically opened on the outer side of the end of the cylinder near the top cover. The guide rod is provided with a guide platform that can cooperate with the guide grooves. The guide platform can slide along the guide grooves.

4. The assisted extraction device according to claim 3, characterized in that: The upper end of the guide platform is provided with a friction-reducing end, which is spherical.

5. The assisted extraction device according to claim 4, characterized in that: A semi-circular pressure plate is fitted onto the connecting rod between the handle and the top cover, and the semi-circular pressure plate is connected to the top cover.

6. The assisted extraction device according to claim 5, characterized in that: The upper end of the guide groove is provided with a mounting flange, which has several screw holes, and the top cover is provided with threaded holes that correspond one-to-one with the screw holes.

7. The assisted extraction device according to claim 6, characterized in that: The connecting rod is provided with a square shaft, and the handle is connected to the square shaft by a fastening screw. The handle is also provided with a support rib.

8. A traction device according to any one of claims 1-7, characterized in that: The top cover is also provided with several weight-reducing holes.

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