Dismounting device for lifting head pin shaft of piston rod of large hydraulic hoist

Abstract

The utility model relates to a dismounting device for a lifting head pin shaft of a piston rod of a large hydraulic hoist, which belongs to the technical field of separation construction of the piston rod and a gate when the large hydraulic hoist is overhauled, and comprises two special-shaped beams which are oppositely arranged, and the upper and lower ends of the two special-shaped beams are respectively and detachably connected with a connecting plate and a box beam; two clamping grooves used for clamping the lug plates are symmetrically formed in the opposite faces of the two special-shaped beams, the box beam comprises two connecting beams, the ends of the two connecting beams are fixedly connected through end plates, and the upper planes and the lower planes of the two connecting beams are each provided with a reinforcing plate in a pairwise symmetry mode. The connecting plate, the box-shaped beam and the special-shaped beam form a frame structure to be combined into a whole, the bending resistance and the shearing strength are high, the friction resistance between the pin shaft and a hanging head hole can be effectively overcome, the pin shaft is safely separated from a hanging head, the construction is safe and reliable, the operation is convenient, and the accidents that people and equipment are hurt due to accidental cracking of a dismantling tool can be effectively prevented; the construction safety risk is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of construction technology for separating the piston rod from the gate during the maintenance of large hydraulic gate hoists, and relates to a device for removing the piston rod lifting head pin, particularly a device for removing the piston rod lifting head pin of a large hydraulic gate hoist. Background Technology

[0002] Hydraulic gate hoists are a type of hydraulic transmission device commonly used in modern machinery to convert hydraulic pressure into mechanical torque. They are mainly used to lift and support various large metal structures. There are two connection methods: one is a nut-locking method where the piston rod is threaded at the end, passes through a connection hole in the metal structure, and is then secured to the metal structure via a nut. The other method is a lifting head structure (where the piston rod end is the lifting head), where a special pin connects the lifting head at the piston rod end of the hydraulic gate hoist to the metal structure, transmitting vertical upward and downward torque. On-site maintenance often requires external force to disengage the pin from the lifting head, separating the pin from the metal structure before maintenance work on the cylinder and the metal structure can be carried out.

[0003] However, because the piston rod of the hydraulic hoist has a tight fit between the lifting head hole and the pin, and is immersed in water for a long time, the pin is very prone to corrosion. During disassembly, a large frictional force will be generated between the pin and the lifting head hole. If the construction device structure is not reasonable and the strength is insufficient, it is difficult to overcome the frictional resistance generated between the pin and the lifting head hole to disengage the pin from the lifting head. At the same time, the resistance is large during operation, and the sudden breakage of the construction tool will cause a great safety hazard to the surrounding equipment and workers.

[0004] Therefore, in order to solve this problem, this utility model proposes a device for removing the piston rod lifting head pin of a large hydraulic gate hoist. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a large hydraulic gate hoist piston rod lifting head pin removal device to solve the technical problems in the prior art where the resistance is large when the hydraulic gate hoist piston rod lifting head pin is separated from the metal structure, and the construction device has an unreasonable structure and insufficient strength, which easily causes the construction tool to suddenly break, posing a great safety hazard to the surrounding equipment and workers.

[0006] To achieve the above and other related objectives, this utility model provides a piston rod lifting pin removal device for a large hydraulic gate hoist, comprising two irregularly shaped beams arranged opposite each other. The upper and lower ends of the two irregularly shaped beams are respectively detachably connected to a connecting plate and a box beam. The opposite faces of the two irregularly shaped beams are symmetrically provided with two slots for locking the ear plates.

[0007] In any of the above embodiments, it is preferred that the width of the slot is 0.5 to 1 mm greater than the thickness of the ear plate.

[0008] Preferably, in any of the above embodiments, the irregular beam has bolt holes at both the upper and lower ends.

[0009] In any of the above embodiments, it is preferred that the connecting plate is "door" shaped, and the height of the hollow part inside the connecting plate is greater than the length of the pin to be detached.

[0010] Preferably, in any of the above embodiments, a bolt hole is provided at the lower end of the connecting plate at a position corresponding to the bolt hole.

[0011] In any of the above embodiments, it is preferred that the box girder includes two connecting beams, which are symmetrically arranged on both sides of the irregular beam and detachably connected to the irregular beam, and the ends of the two connecting beams are fixedly connected by end plates.

[0012] In any of the above embodiments, it is preferred that the spacing between the two connecting beams is 1 to 2 mm larger than the thickness of the irregular beam.

[0013] In any of the above embodiments, it is preferred that a load-bearing plate is welded and fixed to the middle of both the upper and lower sides of the box girder.

[0014] In any of the above embodiments, it is preferred that a reinforcing plate be symmetrically arranged on the upper and lower planes of the two connecting beams.

[0015] In any of the above embodiments, it is preferred that vertical pin holes are provided at positions corresponding to the bolt holes on the two connecting beams.

[0016] As described above, the piston rod lifting pin removal device of this utility model for a large hydraulic gate hoist has the following beneficial effects:

[0017] 1. In this utility model, the frame structure composed of connecting plate, box beam and irregular beam is assembled into a whole by bolts (or pins). It has high bending and shear strength and can effectively overcome the frictional resistance between the pin and the lifting head hole, so that the pin can be safely detached from the lifting head.

[0018] 2. In this utility model, construction is safe and reliable, and operation is convenient. It realizes the safe disengagement of the piston rod lifting head pin of the hydraulic gate hoist from the lifting head, which can effectively prevent accidental breakage of the demolition tool that could injure people or damage equipment, reduce construction safety risks, and improve the safety factor and efficiency of demolition of the hydraulic gate hoist cylinder lifting head pin.

[0019] 3. In this utility model, the device has a simple structure, and the components are connected into a whole by bolts or pins. The individual parts are lightweight, making it easy to transport, assemble and disassemble in narrow spaces. Attached Figure Description

[0020] Figure 1 The diagram shown is a structural schematic of this utility model.

[0021] Figure 2 The diagram shown is a structural schematic of the connecting plate.

[0022] Figure 3 The diagram shows a structural schematic of an irregularly shaped beam.

[0023] Figure 4 The diagram shows the structure of the connecting beam.

[0024] Figure 5 Displayed as Figure 4 A sectional view along line A.

[0025] Component designation explanation

[0026] 1-Connecting plate; 2-Irregular beam; 21-Slot; 3-Handling bolt hole; 4-Resistant plate; 5-Box beam; 51-Connecting beam; 6-Reinforcing plate; 7-Vertical pin hole; 8-End plate; 9-Pin shaft; 10-Ear plate; 11-Hydraulic cylinder lifting head; 12-Jack. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0028] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0029] Please see Figure 1-5 This utility model provides a piston rod lifting head pin removal device for a large hydraulic gate hoist, including two oppositely arranged irregular beams 2. The upper and lower ends of the two irregular beams 2 are respectively detachably connected to a connecting plate 1 and a box beam 5. The opposite faces of the two irregular beams 2 are symmetrically provided with two slots 21 for locking the ear plate 10.

[0030] In this embodiment, the piston rod lifting head pin component of the large hydraulic gate hoist includes a hydraulic cylinder lifting head 11. The upper and lower ends of the hydraulic cylinder lifting head 11 are respectively provided with ear plates 10, and a pin 9 is inserted into the ear plates 10. When it is necessary to remove the piston rod lifting head pin of the large hydraulic gate hoist, the slots 21 of the two irregular beams 2 are respectively engaged at the two ends of the ear plates 10. Then, the connecting plate 1 and the box beam 5 are respectively connected to the upper and lower ends of the irregular beam 2. The jack 12 is installed on the box beam 5, and the output end of the jack 12 contacts the pin 9. Activating the jack 12 causes the pin 9 to be pulled out. Throughout the process, the connecting plate 1, the box beam 5, and the irregular beam 2 form a frame structure with high bending and shear strength, effectively overcoming the frictional resistance between the pin 9 and the lifting head hole, allowing the pin 9 to safely disengage from the lifting head. The construction is safe and reliable, and the operation is convenient. It realizes the safe disengagement of the piston rod lifting head pin 9 of the hydraulic gate hoist from the lifting head, which can effectively prevent accidental breakage of the dismantling tools and injury to people and equipment, reduce construction safety risks, and improve the safety factor and efficiency of dismantling the hydraulic gate hoist cylinder lifting head pin.

[0031] Throughout the process, the connecting plate 1 and the irregular beam 2 are connected as a whole, and play a connecting and tensile role when the whole device is working, preventing the irregular beam 2 from suddenly breaking and injuring people or damaging equipment. The irregular beam 2 is a horizontal load-bearing component, with one end integrated with the connecting plate 1 and the other end assembled with the box beam 5, bearing the maximum horizontal force when the whole device is working.

[0032] In this embodiment, when using the device, wooden planks or other auxiliary support materials need to be placed under both sides of the irregular beam 2 on site to ensure that the device does not fall. At the same time, in order to prevent the irregular beam 2 from bending during operation, a stiffening plate can be added to the upper and lower center lines of the irregular beam 2 and welded to the irregular beam 2 to form a whole, thereby increasing the bending strength.

[0033] In this embodiment, the irregular beam 2 is a horizontal load-bearing component, manufactured from a single piece of steel plate. Its thickness is determined based on the magnitude of the external force required to remove the pin. In this embodiment, the thickness of the irregular beam 2 is a safety factor of 8 times the external force required to remove the pin. Of course, the thickness of the irregular beam 2 is not limited to 8 times the safety factor required to remove the pin; a safety factor of 7 to 10 times the external force required to remove the pin can be selected based on the actual construction conditions.

[0034] In this embodiment, the detachable connection between the connecting plate 1 and the box beam 5 and the irregular beam 2 ensures that the entire device is lightweight, thus facilitating transportation, assembly and disassembly in narrow spaces.

[0035] As a further description of the above embodiment, the width of the slot 21 is determined according to the thickness of the ear plate 10. In order to ensure that the irregular beam 2 can hold the ear plate 10 and prevent the ear plate 10 from shaking in the slot 21, thereby ensuring the stability of the connection between the irregular beam 2 and the ear plate 10, the width of the slot 21 in this embodiment is 0.5mm larger than the thickness of the ear plate 10.

[0036] As a further description of the above embodiment, in order to ensure that the irregular beam 2 can hold the ear plate 10 and prevent the ear plate 10 from shaking in the slot 21, thereby ensuring the stability of the connection between the irregular beam 2 and the ear plate 10, in this embodiment the width of the slot 21 is 1 mm larger than the thickness of the ear plate 10.

[0037] Of course, the width of the slot 21 is not limited to being 0.5 mm or 1 mm larger than the thickness of the ear plate 10. The width of the slot 21 can be 0.5 mm to 1 mm larger than the thickness of the ear plate 10.

[0038] As a further description of the above embodiment, the connecting plate 1 is "door" shaped, and the height of the hollow part inside the connecting plate 1 is greater than the length of the pin 9 to be detached.

[0039] In this embodiment, the connecting plate 1 is made of steel plate. The connecting plate 1 has a hollow "door"-shaped structure, and the hollow part of the connecting plate 1 forms a disassembly cavity for the pin 9. In order to ensure that the pin 9 can be disassembled smoothly, the height of the disassembly cavity for the pin 9 in the hollow part of the connecting plate 1 must be greater than the length of the pin 9 to be disassembled.

[0040] In this embodiment, the connecting plate 1 is not limited to adopting an internally hollow "door" type structure; other structures that can accommodate the disassembly and movement of the pin 9 are also acceptable, such as the connecting plate 1 adopting an internally hollow arch bridge type structure.

[0041] In this embodiment, in order to achieve a detachable connection between the connecting plate 1 and the irregular beam 2, bolt holes and clamping bolt holes 3 are respectively opened at corresponding positions on the connecting plate 1 and the irregular beam 2. After the bolts are passed through the bolt holes and clamping bolt holes 3, the connecting plate 1 and the irregular beam 2 are assembled into a whole.

[0042] As a further description of the above embodiment, the box girder 5 includes two connecting beams 51, which are symmetrically arranged on both sides of the irregular beam 2 and detachably connected to the irregular beam 2. The ends of the two connecting beams 51 are fixedly connected by end plates 8.

[0043] In this embodiment, the connecting beam 51 is an I-beam (or channel steel), meaning the box girder 5 is assembled from two I-beams (or channel steels). After the two I-beams (or channel steels) are assembled, their ends are welded and fixed into a single load-bearing unit via end plates 8. During the assembly of the two I-beams (or channel steels), a slot for inserting the irregular beam 2 is pre-reserved in the middle. After assembly, the irregular beam 2 is inserted into the slot of the box girder 5 and then fixed with bolts.

[0044] In this embodiment, in order to ensure that the irregular beam 2 can be inserted into the box beam 5 and will not shake inside the box beam 5, the distance between the two connecting beams 51 (i.e., the insertion slot) in the box beam 5 is 1 mm larger than the thickness of the irregular beam 2. Of course, the distance between the two connecting beams 51 can be 1 to 2 mm larger than the thickness of the irregular beam 2.

[0045] In this embodiment, the box girder 5 is not limited to being made of two I-beams (or channel steels) connected together. Other structures that can provide stable support and connection are also acceptable. For example, the box girder 5 can be made of a rectangular structure made of steel plate. An installation groove adapted to the irregular beam 2 can be opened on the rectangular structure at the position corresponding to the irregular beam 2. The irregular beam 2 can be inserted into the installation groove to achieve a detachable connection with the box girder 5.

[0046] In this embodiment, the size of the I-beam (or channel steel) is determined by the actual load-bearing capacity. The length is determined based on the width of the lugs 10 on both sides of the lifting head and the height of the external mechanical equipment used.

[0047] As a further description of the above embodiment, in order to increase the stability and strength of the box girder 5, a load-bearing plate 4 is welded and fixed at the middle of both the upper and lower surfaces of the box girder 5.

[0048] In this embodiment, the force-bearing plate 4 is made of steel plate. The width and thickness of the force-bearing plate 4 are determined according to the magnitude of the external force on the device and the mechanical device used.

[0049] As a further description of the above embodiment, in order to further increase the stability and strength of the box girder 5, a reinforcing plate 6 is symmetrically arranged on the upper and lower planes of the two I-beams (or channel steels).

[0050] In this embodiment, the reinforcing plate 6 can also be arranged on both sides of the middle web of the I-beam (or channel steel) and welded to the I-beam (or channel steel) to form a whole.

[0051] As a further description of the above embodiment, in order to achieve a detachable connection between the box girder 5 and the irregular beam 2, bolt holes 3 and pin holes 7 are respectively opened at corresponding positions on the box girder 5 and the irregular beam 2. The pin holes 7 can be used to install pins or bolts, connecting the irregular beam 2 and the box girder 5 into a single load-bearing unit to withstand horizontal shear forces.

[0052] In summary, this utility model, based on the size of the piston rod lifting head pin 9 and the ear plates 10 on both sides of the pin 9, manufactures a matching hydraulic gate hoist piston rod lifting head pin removal device. The connecting plate 1 and the irregular beam 2 are connected as a whole by bolts, which plays a connecting and tensioning role when the whole device is working, preventing the irregular beam 2 from suddenly breaking and injuring people or damaging equipment during operation. The irregular beam 2 is a horizontal load-bearing component. One end is connected to the connecting plate 1 by bolts, and the other end is assembled with the box beam 5 as a whole. The box beam 5 and the irregular beam 2 are connected as a whole by pins or bolts inserted through the vertical pin holes 7. A load-bearing plate 4 is added to the front and rear of the center of the irregular beam 2 and welded to the irregular beam 2 as a whole. An end plate 8 is installed at each end of the irregular beam 2 and welded to the entire irregular beam 2 as a whole. The irregular beam 2 is assembled from two I-beams (or channel steels) as a whole, with a 1-2mm thicker allowance in the middle than the thickness of the irregular beam 2. A reinforcing plate 6 is arranged at the top and bottom of each end, and welded to the I-beam to form a whole. After the irregular beam 2 is assembled into a whole, it is inserted into the other end of the irregular beam 2, and two vertical pin holes 7 are drilled longitudinally on each side. The box beam 5 and the irregular beam 2 are connected into a whole by pins (or bolts) to bear the maximum horizontal force when the whole device is working.

[0053] In summary, the frame structure composed of connecting plates, box beams, and irregular beams in this utility model is assembled into a whole by bolts (or pins). It possesses high bending and shear strength, effectively overcoming the frictional resistance between the pin and the lifting head hole, allowing the pin to safely detach from the lifting head. This ensures safe and reliable construction, convenient operation, and effectively prevents accidental breakage of dismantling tools that could injure personnel or damage equipment, reducing construction safety risks. It also improves the safety factor and efficiency of dismantling the hydraulic hoist cylinder lifting head pin. Therefore, this utility model effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0054] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A large hydraulic hoist piston rod yoke pin shaft removal device, characterized in that: The utility model provides a kind of box beam and connecting plate, including two oppositely arranged special-shaped beams (2), and the upper and lower ends of two special-shaped beams (2) are respectively detachably connected with connecting plate (1) and box beam (5), and the opposite faces of two special-shaped beams (2) are symmetrically provided with two clamping grooves (21) for clamping lug plate (10).

2. The large hydraulic hoist piston rod yoke pin shaft removal device of claim 1, wherein: The width of the clamping groove (21) is 0.5-1mm larger than the thickness of the lug plate (10).

3. The large hydraulic hoist piston rod yoke pin shaft removal device of claim 1, wherein: The upper and lower ends of the special-shaped beam (2) are provided with a bolt hole (3).

4. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 1, characterized in that: The connecting plate (1) is in the shape of a door, and the height of the hollow part inside the connecting plate (1) is greater than the length of the pin shaft to be separated.

5. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 3, characterized in that: The connecting plate (1) is provided with a bolt hole at the position corresponding to the bolt hole (3).

6. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 3, characterized in that: The box beam (5) includes two connecting beams (51), which are symmetrically arranged on both sides of the special-shaped beam (2) and detachably connected with the special-shaped beam (2), and the ends of the two connecting beams (51) are fixedly connected through an end plate (8).

7. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 6, characterized in that: The spacing between the two connecting beams (51) is 1-2mm larger than the thickness of the special-shaped beam (2).

8. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 1, characterized in that: The upper and lower surfaces of the box beam (5) are each welded with a stress plate (4) at the middle part.

9. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 6, characterized in that: The upper and lower surfaces of the two connecting beams (51) are each arranged with a reinforcing plate (6) symmetrically.

10. The large hydraulic opening and closing machine piston rod lifting head pin shaft dismounting device according to claim 6, characterized in that: The two connecting beams (51) are provided with a vertical pin hole (7) at the position corresponding to the bolt hole (3).

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