Hydraulic pulling-out device for guide and guard support arm shaft
By designing a hydraulic pull-out device, and utilizing the threaded connection between the hydraulic cylinder and the fixing screw, the guide arm shaft can be pulled out quickly and accurately. This solves the problem of the difficulty in pulling out the arm shaft in the existing technology, improves work efficiency and equipment reliability, and reduces labor costs and operational hazards.
Patent Information
- Application Number
- CN202520339585.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-28
AI Technical Summary
In the steel rolling production of the metallurgical industry, the guide arm shaft is prone to deformation under long-term high pressure and friction, making it difficult to pull out smoothly. Existing disassembly methods such as violent knocking and the use of gas cutting equipment will cause equipment damage or increase maintenance costs.
Design a hydraulic pull-out device that uses a hydraulic cylinder and a fixing screw to quickly and accurately pull out the outrigger shaft by means of hydraulic oil. The device includes a hydraulic cylinder, a connecting screw, and a fixing screw. The connecting screw is threadedly connected to the outrigger shaft by the pulling action of the hydraulic cylinder, so as to achieve stable pull-out of the outrigger shaft.
It improved work efficiency, reduced labor costs and operational hazards, extended equipment lifespan, and enhanced equipment reliability.
Smart Images
Figure CN223820043U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of dismounting and mounting tools, in particular to a hydraulic pulling device for a guide arm shaft. BACKGROUND
[0002] In the rolling production of the metallurgical industry, the guide device is a key equipment component, and the arm shaft thereof is prone to deformation under the condition of bearing large pressure and friction force for a long time. The deformation causes the arm shaft and the related components to be tightly matched, thereby being difficult to be pulled out smoothly.
[0003] In order to complete the pulling operation of the arm shaft, the on-site staff often uses some original and rough methods, such as violent knocking and crowbar prying. However, the effect of these methods is not ideal. On the one hand, due to the tight combination between the arm shaft and the surrounding components, violent disassembly often fails to achieve the desired effect, and may even cause further deformation or damage of the arm shaft. On the other hand, when violent disassembly fails, some staff may choose to use a gas cutting device to cut the arm shaft. Although this method can solve the current problem, it will cause irreparable damage to the guide device, resulting in the guide device being unable to be used again, greatly increasing the maintenance cost and replacement frequency of the equipment. SUMMARY
[0004] The utility model aims at overcoming the shortage of prior art, proposes a hydraulic pulling device for a guide arm shaft, which can quickly and accurately pull out the arm shaft with the help of a hydraulic device, improve work efficiency, reduce labor cost and operation danger, improve equipment reliability, and prolong service life.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] A hydraulic pulling device for a guide arm shaft, comprising a hydraulic cylinder, a connecting screw and a fixing screw, the hydraulic cylinder comprises a cylinder body and a shaft body, the cylinder body is provided with a first end cover and a second end cover and a piston at both ends, the shaft body is connected with the piston at one end, the piston moves between the first end cover and the second end cover, a first oil port is arranged between the piston and the first end cover, and a second oil port is arranged between the piston and the second end cover; the head of the shaft body is provided with a space for inserting the head of the connecting screw and being clamped; a fixing thread hole is arranged on the head of the shaft body, a through hole matched with the fixing thread hole is arranged on the head of the connecting screw, and the fixing screw can be screwed into the head of the shaft body through the fixing thread hole and the through hole, so as to realize the connection between the connecting screw and the shaft body.
[0007] The rod part of the connecting screw is threadedly connected with the guide arm shaft, and under the pulling action of the hydraulic cylinder, the guide arm shaft is pulled out.
[0008] Preferably, the shaft body head side is provided with a slot, the slot and the top of the shaft body head form a connecting plate, the connecting plate is provided with a fan-shaped opening, the fan-shaped opening is provided with a clamping circular arc opening, the clamping circular arc opening has an arc of 60-80 degrees, the connecting plate is provided with a connecting through hole, the fixing screw hole is arranged in the slot, the fixing screw passes through the connecting through hole, penetrates through the hole and is screwed into the fixing screw hole, the head of the connecting screw is inserted into the slot, and the rod of the connecting screw is arranged at the clamping circular arc opening, so that the connecting screw and the shaft body are threadedly connected through the fixing screw.
[0009] Preferably, the shaft body head is further provided with a turning plate, an insertion plate, a first screw and a second screw, one end of the turning plate is hinged to the shaft body head, the turning plate is an arc-shaped plate, the inner side diameter of the turning plate is greater than the outer diameter of the shaft body head, the other end of the turning plate is threadedly connected to the shaft body head through the first screw, the turning plate is provided with an insertion opening, the insertion plate is inserted into the fan-shaped opening of the connecting plate through the insertion opening, and the insertion plate is threadedly connected to the turning plate through the second screw, so that the shaft body head can be detachably protected through the turning plate and the insertion plate.
[0010] Preferably, the insertion plate is a fan-shaped plate, the inner side of the insertion plate is an inner arc surface, the inner arc surface cooperates with the outer wall of the rod of the connecting screw, the insertion plate inserted into the connecting plate can further limit the connecting screw, and the stable connection between the connecting screw and the shaft body head is optimized.
[0011] Preferably, the inner arc surface is provided with anti-skid lines matched with the rod of the connecting screw, so that the connection relationship of the connecting screw is further stabilized.
[0012] The utility model has the advantages that:
[0013] The utility model discloses a hydraulic cylinder shaft body and connecting screw are threadedly connected through the fixing screw, the shaft body is retracted under the action of hydraulic oil, the support arm shaft can be pulled out quickly and accurately, work efficiency is improved, manpower cost and operation danger are reduced, equipment reliability is improved, and service life is prolonged.
[0014] The utility model discloses a hydraulic cylinder shaft body and connecting screw are threadedly connected through the fixing screw, the shaft body is retracted under the action of hydraulic oil, the support arm shaft can be pulled out quickly and accurately, work efficiency is improved, manpower cost and operation danger are reduced, equipment reliability is improved, and service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without paying the creative labor.
[0016] Figure 1 is a schematic diagram of the overall structure of the first embodiment.
[0017] Figure 2 is a schematic diagram of the structure of the head of the shaft body in the second embodiment.
[0018] Figure 3 is a schematic diagram of the connecting structure of the head of the shaft body and the connecting screw in the second embodiment.
[0019] Figure 4 is Figure 3 is a sectional view along A-A in the second embodiment.
[0020] Figure 5 is a schematic diagram of the structure of the third embodiment.
[0021] In the figure, 1 is a hydraulic cylinder, 2 is a connecting screw, 3 is a fixing screw, 11 is a cylinder body, 12 is a shaft body, 111 is a first end cover, 112 is a second end cover, 113 is a first oil port, 114 is a second oil port, 121 is a piston, 122 is a slot, 123 is a connecting plate, 124 is a connecting through hole, 125 is a clamping arc port, 13 is a turning plate, 14 is an insertion plate, 15 is a first screw, 16 is a second screw, 131 is an insertion port, and 141 is an inner arc surface. DETAILED DESCRIPTION
[0022] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.
[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0025] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.
[0026] First embodiment:
[0027] As shown in Figure 1 A hydraulic pulling device for guide arm shaft, comprising a hydraulic cylinder 1, a connecting screw 2 and a fixing screw 3, the hydraulic cylinder 1 comprises a cylinder body 11 and a shaft body 12, the cylinder body 11 is provided with a first end cover 111 and a second end cover 112 and a piston 121 at both ends, the shaft body 12 is connected with the piston 121 at one end, the piston 121 moves between the first end cover 111 and the second end cover 112, a first oil port 113 is arranged between the piston 121 and the first end cover 111, and a second oil port 114 is arranged between the piston 121 and the second end cover 112; the head of the shaft body 12 is provided with a space for inserting and clamping the head of the connecting screw 2; the head of the shaft body 12 is provided with a fixed threaded hole, the head of the connecting screw 2 is provided with a through hole matched with the fixed threaded hole, and the fixing screw 3 can be screwed into the head of the shaft body 12 through the fixed threaded hole and the through hole, so as to realize the connection between the connecting screw 2 and the shaft body 12.
[0028] The rod part of the connecting screw 2 is threadedly connected with the guide arm shaft, and under the pulling action of the hydraulic cylinder 1, the guide arm shaft is pulled out.
[0029] Second embodiment:
[0030] As shown in Figure 1 A hydraulic pulling device for guide arm shaft, comprising a hydraulic cylinder 1, a connecting screw 2 and a fixing screw 3, the hydraulic cylinder 1 comprises a cylinder body 11 and a shaft body 12, the cylinder body 11 is provided with a first end cover 111 and a second end cover 112 and a piston 121 at both ends, the shaft body 12 is connected with the piston 121 at one end, the piston 121 moves between the first end cover 111 and the second end cover 112, a first oil port 113 is arranged between the piston 121 and the first end cover 111, and a second oil port 114 is arranged between the piston 121 and the second end cover 112; the head of the shaft body 12 is provided with a space for inserting and clamping the head of the connecting screw 2; the head of the shaft body 12 is provided with a fixed threaded hole, the head of the connecting screw 2 is provided with a through hole matched with the fixed threaded hole, and the fixing screw 3 can be screwed into the head of the shaft body 12 through the fixed threaded hole and the through hole, so as to realize the connection between the connecting screw 2 and the shaft body 12.
[0031] The rod of the connecting screw 2 is threadedly connected with the guide arm shaft, and under the pulling action of the hydraulic cylinder 1, the guide arm shaft is pulled out.
[0032] As shown in Figures 2-4 The head of the shaft body 12 is provided with a slot 122, and a connecting plate 123 is formed between the slot 122 and the top of the head of the shaft body 12. The connecting plate 123 is provided with a fan-shaped opening, and the fan-shaped opening is provided with a clamping arc-shaped opening 125. The radian of the clamping arc-shaped opening 125 is 60-80°. The connecting plate 123 is provided with a connecting through hole 124. The fixing screw hole is arranged in the slot 122. The head of the connecting screw 2 is inserted into the slot 122, and the rod of the connecting screw 2 is arranged at the clamping arc-shaped opening 125, so that the connecting screw 2 and the shaft body 12 are threadedly connected through the fixing screw 3.
[0033] Third embodiment:
[0034] As shown in Figure 1 A hydraulic pulling-out device for a guide arm shaft, comprising a hydraulic cylinder 1, a connecting screw 2 and a fixing screw 3. The hydraulic cylinder 1 comprises a cylinder body 11 and a shaft body 12. The cylinder body 11 is provided with a first end cover 111 and a second end cover 112 and a piston 121 at both ends. One end of the shaft body 12 is connected with the piston 121. The piston 121 moves between the first end cover 111 and the second end cover 112. A first oil port 113 is arranged between the piston 121 and the first end cover 111, and a second oil port 114 is arranged between the piston 121 and the second end cover 112. The head of the shaft body 12 is provided with a space for inserting the head of the connecting screw 2 and clamping. The head of the shaft body 12 is provided with a fixing screw hole. The head of the connecting screw 2 is provided with a through hole matched with the fixing screw hole. The fixing screw 3 can be screwed into the head of the shaft body 12 through the fixing screw hole and the through hole, so as to connect the connecting screw 2 and the shaft body 12.
[0035] The rod of the connecting screw 2 is threadedly connected with the guide arm shaft, and under the pulling action of the hydraulic cylinder 1, the guide arm shaft is pulled out.
[0036] As shown in Figures 2-4As shown in the drawings, the shaft body 12 head side is provided with a slot 122, and the slot 122 and the top of the shaft body 12 head form a connecting plate 123, the connecting plate 123 is provided with a fan-shaped opening, and the fan-shaped opening is provided with a clamping arc opening 125, the radian of the clamping arc opening 125 is 60-80°, the connecting plate 123 is provided with a connecting through hole 124, the fixed screw hole is arranged in the slot 122, the fixed screw 3 passes through the connecting through hole 124, penetrates the hole and is screwed into the fixed screw hole, the head of the connecting screw 2 extends into the slot 122, and the rod part of the connecting screw 2 is arranged at the clamping arc opening 125, so that the connecting screw 2 and the shaft body 12 are threadedly connected through the fixed screw 3.
[0037] As shown in the drawings, Figure 5 As shown in the drawings, the shaft body 12 head is further provided with a turning plate 13, an insertion plate 14, a first screw 15 and a second screw 16, one end of the turning plate 13 is hinged to the shaft body 12 head, the turning plate 13 is an arc-shaped plate, the inner diameter of the turning plate 13 is greater than the outer diameter of the shaft body 12 head, the other end of the turning plate 13 is threadedly connected to the shaft body 12 head through the first screw 15, the turning plate 13 is provided with an insertion opening 131, the insertion plate 14 enters the fan-shaped opening of the connecting plate 123 through the insertion opening 131, and the insertion plate 131 is threadedly connected to the turning plate 13 through the second screw 16, and the turning plate 13 and the insertion plate 14 can be detachably protected for the shaft body 12 head.
[0038] The insertion plate 14 is a fan-shaped plate, the inner side of the insertion plate 14 is an inner arc surface 141, the inner arc surface 141 cooperates with the outer wall of the rod part of the connecting screw 2, the insertion plate 14 inserted into the connecting plate 123 can further limit the connecting screw 2, and the stable connection of the connecting screw 2 and the shaft body 12 head is optimized.
[0039] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A hydraulic pulling device for guide arm shaft, comprising a hydraulic cylinder, the hydraulic cylinder comprising a cylinder body and a shaft body, the cylinder body being provided with a first end cover and a second end cover at both ends and a piston, the shaft body being connected with the piston at one end, the piston moving between the first end cover and the second end cover, a first oil port being arranged between the piston and the first end cover, and a second oil port being arranged between the piston and the second end cover, characterized in that: The shaft body head is provided with a space for inserting and clamping the head of the connecting screw; the shaft body head is provided with a fixing screw hole; the head of the connecting screw is provided with a through hole matched with the fixing screw hole; the fixing screw can be screwed into the shaft body head through the fixing screw hole and the through hole.
2. A hydraulic puller for guide arm shafts as claimed in claim 1, characterized in that: The shaft body head is provided with a slot on one side, and a connecting plate is formed between the slot and the top of the shaft body head; the connecting plate is provided with a fan-shaped opening, and the fan-shaped opening is provided with a clamping circular arc opening with an arc of 60-80°; the connecting plate is provided with a connecting through hole; the fixing screw hole is arranged in the slot; the fixing screw is screwed into the fixing screw hole through the connecting through hole and the through hole; the head of the connecting screw is inserted into the slot, and the rod of the connecting screw is arranged at the clamping circular arc opening.
3. A hydraulic puller for guide arm shafts as claimed in claim 2, characterized in that: The shaft body head is further provided with a turning plate, an insertion plate, a first screw and a second screw; one end of the turning plate is hinged to the shaft body head; the turning plate is an arc-shaped plate; the inner diameter of the turning plate is greater than the outer diameter of the shaft body head; the other end of the turning plate is threadedly connected to the shaft body head through the first screw; the turning plate is provided with an insertion opening; the insertion plate enters the fan-shaped opening of the connecting plate through the insertion opening; the insertion plate is threadedly connected to the turning plate through the second screw.
4. A hydraulic puller for guide arm shafts as claimed in claim 3, characterized in that: The insertion plate is a fan-shaped plate, and the inner side of the insertion plate is an inner arc surface matched with the outer wall of the rod of the connecting screw.
5. A hydraulic puller for guide arm shafts as claimed in claim 4, characterized in that: The inner arc surface is provided with anti-slip lines matched with the rod of the connecting screw.