Hydraulic cone taking device

Abstract

A hydraulic cone taking device relates to the technical field of high-speed rail maintenance tools and comprises a sleeve and a plurality of clamping jaws, the upper ends of the clamping jaws are rotatably connected with the sleeve, and clamping portions protruding towards the radial outer side of the sleeve are formed at the lower ends of the clamping jaws. The multiple clamping jaws are arranged around the center axis of the sleeve. The plurality of claws have a first state in which the clamping parts are gathered towards the direction of the central shaft and a second state in which the clamping parts deviate from the central shaft; the limiting pin is arranged in the middle hole part in an up-down sliding manner; in the first state, the limiting pin deviates from the clamping jaw in the length direction of the middle hole part; and in the second state, the limiting pin slides among the multiple clamping jaws to prevent the multiple clamping jaws from retracting inwards in the radial direction. The hydraulic cone taking device improves the taking efficiency of the eccentric cone, and saves time and labor.

Description

Technical Field

[0001] This utility model relates to the technical field of high-speed rail maintenance tools, specifically to a hydraulic cone extractor. Background Technology

[0002] The eccentric cone of a high-speed railway turnout is a component used to fix the rails on high-speed railway tracks. It is embedded deep inside the facility and needs to be removed during replacement and maintenance. However, because the other fixing facilities use an interference fit, removing the eccentric cone is very difficult. In the past, it was removed manually and by hand-machinery, using a pry bar to pry the eccentric cone out, which was time-consuming and labor-intensive. Utility Model Content

[0003] This utility model provides a hydraulic cone extractor to address the aforementioned technical problems in the prior art, thereby improving work efficiency and saving time and effort.

[0004] To achieve the above technical objectives, this utility model provides a hydraulic cone extractor, comprising:

[0005] A sleeve having a central hole that extends in the same direction as the central axis of the sleeve;

[0006] Multiple jaws, the upper end of which is rotatably connected to the sleeve, and the lower end of which forms a clamping portion protruding radially outward from the sleeve; the multiple jaws are arranged around the central axis of the sleeve; the multiple jaws have a first state in which their clamping portions converge toward the central axis, and a second state in which the clamping portions of the jaws deviate from the central axis;

[0007] A limiting pin is slidably disposed within the central hole. In the first state, the limiting pin is offset from the jaws in the length direction of the central hole. In the second state, the limiting pin slides between the multiple jaws to prevent the multiple jaws from retracting radially.

[0008] Furthermore, the sleeve has a guide groove that extends vertically and penetrates the sleeve wall. One end of the operating rod is connected to the limiting pin, and the other end passes through the guide groove and extends to the outside of the sleeve.

[0009] Furthermore, the upper end of the guide groove is provided with a limiting groove, one end of which is connected to the guide groove, and the other end extends downward at an angle to accommodate the operating rod and limit its movement.

[0010] Furthermore, the hydraulic cone extractor also has a bracket and a hydraulic cylinder, the cylinder barrel of the hydraulic cylinder is fixedly connected to the upper end of the bracket, and the piston rod of the hydraulic cylinder is connected to the upper end of the sleeve.

[0011] Furthermore, the number of the grippers is 2 to 4.

[0012] Furthermore, it also includes a manual pump, which is connected to the hydraulic cylinder via a pipeline.

[0013] Furthermore, the pipeline is connected to the manual pump and / or the hydraulic cylinder via a quick-connect coupling.

[0014] Furthermore, the plurality of said claws are evenly distributed around the central axis of the sleeve.

[0015] One or more technical solutions provided in this utility model embodiment have at least the following technical effects or advantages: the hydraulic cone extractor is used to remove eccentric cones used in railways. The hydraulic cone extractor uses hydraulic principles to replace tools such as pry bars, thereby improving the extraction efficiency of eccentric cones.

[0016] During operation, the limit pin can be inserted between the jaws to prevent the jaws from accidentally disengaging from the eccentric cone, thus improving the safety of the equipment. Furthermore, after the limit pin is lifted, the lower end of the jaws converges towards the center, thereby disengaging from the eccentric cone and completing the removal of the eccentric cone. This design ensures good safety and high work efficiency.

[0017] The hydraulic cone extractor of this invention has the following advantages:

[0018] When oil is injected into the hydraulic cylinder, the force applied by the hydraulic cylinder to the eccentric cone gradually increases, and the extraction force is stable, avoiding the occurrence of injury incidents caused by traditional methods (such as pry bar popping up), and has a good safety factor.

[0019] This utility model's hydraulic cone extractor has a strong extraction force, solving the problem of difficult or even impossible extraction of eccentric cones that has plagued the industry for many years. It has been tested in the field.

[0020] This utility model's hydraulic cone extractor can be operated by a single person, solving the problem of tasks that require 2-3 people to complete in difficult situations, thus saving manpower and resources. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the hydraulic cone extractor according to the first embodiment of this utility model.

[0022] Figure 2 for Figure 1 Front view.

[0023] Figure 3 This is a structural diagram of the working components in the first embodiment.

[0024] Figure 4 This is a cross-sectional view of the working component in the first embodiment.

[0025] Figure 5 This is a structural diagram of the hydraulic cone extractor according to the second embodiment of this utility model.

[0026] Figure 6 This is a structural diagram of the working component in the second embodiment.

[0027] Explanation of reference numerals in the attached figures

[0028] 1, 2, Hydraulic cone extractor;

[0029] 10. Bracket; 11. Support plate; 12. First support part; 13. Second support part; 14. Working space; 20. Hydraulic cylinder; 21. Connection port; 30, 30', Working components; 31. Sleeve; 310. Central hole; 311. Guide groove; 312. Limit groove; 32. Limit pin; 33. Claw; 331. Holding part; 34. Operating lever; c. Central shaft. Detailed Implementation

[0030] Other objects and advantages of this utility model will become clear by explaining the preferred embodiments of the present application below.

[0031] Example 1

[0032] like Figure 1 and Figure 2 As shown, the hydraulic cone remover 1 includes a bracket 10, a hydraulic cylinder 20, and a working assembly 30. The bracket 10 has a support plate 11, one end of which is fixed to a first support portion 12, and the other end to a second support portion 13. Both the first support portion 12 and the second support portion 13 extend downwards, thereby forming a working space 14 between the first support portion 12 and the second support portion 13 to accommodate the working assembly 30. This hydraulic cone remover 1 is used for removing eccentric cones used in railways. The hydraulic cone remover 1 utilizes hydraulic principles to replace tools such as pry bars, improving the efficiency of removing eccentric cones.

[0033] Hydraulic cylinder 20 is mounted on the upper side of bracket 10. The cylinder barrel of hydraulic cylinder 20 is fixedly connected to bracket 10. The piston rod of hydraulic cylinder 20 extends through the through hole on support plate 11 to the aforementioned working space 14. The lower end of the piston rod of hydraulic cylinder 20 is connected to the aforementioned working assembly 30, which is used to lift the eccentric cone after the working assembly 30 is connected to the eccentric cone.

[0034] like Figure 2 As shown, the hydraulic cylinder 20 has a connection port 21, through which it is connected to a pipeline. The hydraulic cone extractor 1 in this embodiment also includes a manual pump, which is connected to the hydraulic cylinder 20 via a pipeline. Preferably, the pipeline is connected to the manual pump and / or the hydraulic cylinder 20 via a quick-connect coupling, which improves the efficiency of on-site installation and disassembly.

[0035] like Figure 3 and Figure 4As shown, the aforementioned working component 30 may include, for example, a sleeve 31, a limiting pin 32, and two jaws 33. Specifically, the sleeve 31 has a central hole 310 extending in the same direction as the central axis c of the sleeve 31. The upper end of the jaw 33 is rotatably connected to the sleeve 31, and the lower end of the jaw 33 forms a retaining portion 331 protruding radially outward from the sleeve 31. The two jaws 33 are arranged around the central axis c of the sleeve 31. The two jaws 33 have a first state in which their retaining portions 331 converge toward the central axis c, and a second state in which the retaining portions 331 of the jaws 33 are offset from the central axis c.

[0036] The limiting pin 32 is slidably disposed within the central hole 310. In the first state, the limiting pin 32 deviates from the claw 33 along the length direction of the central hole 310, causing the lower ends of the claw 33 to converge, making the outer dimension of the holding part 331 smaller than the inner hole dimension of the eccentric cone, and extending to the lower side of the eccentric cone. In the second state, the limiting pin 32 slides between the multiple claws 33 to prevent the multiple claws 33 from returning from the second state to the first state, thereby playing a limiting role and keeping the holding part 331 in an open state, thus effectively holding the eccentric cone and pulling the eccentric cone up under the drive of the hydraulic cylinder 20.

[0037] like Figure 3 and Figure 4 As shown, the sleeve 31 has a guide groove 311 that extends vertically and penetrates the wall of the sleeve 31. One end of the operating rod 34 is connected to the limiting pin 32, and the other end passes through the guide groove 311 and extends to the outside of the sleeve 31, so that the limiting pin 32 can be manually lifted.

[0038] The upper end of the guide groove 311 is provided with a limiting groove 312. One end of the limiting groove 312 is connected to the guide groove 311, and the other end extends downward at an angle to accommodate and limit the operating rod 34, thereby maintaining the position of the limiting pin 32 and preventing it from falling. The operating rod 34 is manually operated from the outside, and rotated to re-enter the guide groove 311. Pushing the operating rod 34 downward will move the limiting pin 32 to the middle position of the two jaws 33, preventing the jaws 33 from converging inward. Figure 3 As shown, in this embodiment, there are two claws 33, which are symmetrically arranged on the lower side of the sleeve 31.

[0039] Example 2

[0040] The hydraulic cone extractor 2 in this embodiment is a further improvement on the one in embodiment 1. In this embodiment, the number of chucks 33 is changed to four, such as... Figure 5 and Figure 6As shown, in the working component 3', four jaws 33 are evenly arranged around the central axis c of the sleeve 31. In this embodiment, by increasing the number of jaws 33, it can withstand a larger extraction force load, while also protecting the eccentric cone from damage caused by excessively concentrated extraction force.

[0041] It should be noted that the number of the aforementioned claws 33 can also be 3 or other numbers, preferably 2 to 10, as long as they can hold the eccentric cone.

[0042] The working principle of the hydraulic cone extractor according to one embodiment of this utility model is as follows: During operation, the operating rod 34 is pulled up, the limiting pin 32 is lifted and rotated, and the operating rod 34 is placed into the limiting groove 312. The lower end of the chuck 33 converges towards the center, thus passing through the central hole of the eccentric cone. After the holding part 331 of the chuck 33 passes through the central hole of the eccentric cone, it opens, and then the limiting pin 32 is pushed down, so that the limiting pin 32 enters the center of the chuck 33, which can limit the holding part 331 and effectively prevent the holding part 331 from separating from the eccentric cone. Then, oil is injected into the hydraulic cylinder by a manual pump, and the hydraulic cylinder 20 pulls the working component 30 upward, realizing the removal of the eccentric cone. Finally, the limiting pin 32 is moved upward, realizing the separation of the chuck 33 from the eccentric cone, and completing the removal of the eccentric cone.

[0043] The hydraulic cone extractor 1 of this application has been described in detail with reference to the preferred technical solution. However, it should be noted that, without departing from the spirit of this application, those skilled in the art can make any modifications, alterations, and variations based on the above disclosure. This application includes the above-described specific embodiments and any equivalent forms thereof.

Claims

1. A hydraulic cone extractor, characterized in that, include: A sleeve having an internal central hole extending in the same direction as the central axis of the sleeve; Multiple jaws, the upper end of which is rotatably connected to the sleeve, and the lower end of which forms a clamping portion protruding radially outward from the sleeve; the multiple jaws are arranged around the central axis of the sleeve; the multiple jaws have a first state in which their clamping portions converge toward the central axis, and a second state in which the clamping portions of the jaws deviate from the central axis; A limiting pin is slidably disposed within the central hole. In the first state, the limiting pin is offset from the jaws in the length direction of the central hole. In the second state, the limiting pin slides between the multiple jaws to prevent the multiple jaws from retracting radially.

2. The hydraulic cone extractor as described in claim 1, characterized in that, The sleeve has a guide groove that extends vertically and penetrates the sleeve wall. One end of the operating rod is connected to the limiting pin, and the other end passes through the guide groove and extends to the outside of the sleeve.

3. The hydraulic cone extractor as described in claim 2, characterized in that, The upper end of the guide groove is provided with a limiting groove. One end of the limiting groove is connected to the guide groove, and the other end extends downward at an angle to accommodate the operating rod and limit its movement.

4. The hydraulic cone extractor as described in claim 1, characterized in that, The hydraulic cone extractor also has a bracket and a hydraulic cylinder. The cylinder barrel of the hydraulic cylinder is fixedly connected to the upper end of the bracket, and the piston rod of the hydraulic cylinder is connected to the upper end of the sleeve.

5. The hydraulic cone extractor as described in claim 1, characterized in that, The number of grippers is 2 to 10.

6. The hydraulic cone extractor as described in claim 4, characterized in that, It also includes a manual pump, which is connected to the hydraulic cylinder via a pipeline.

7. The hydraulic cone extractor as described in claim 6, characterized in that, The pipeline is connected to the manual pump and / or the hydraulic cylinder via a quick-connect coupling.

8. The hydraulic cone extractor as described in claim 1, characterized in that, The multiple jaws are evenly distributed around the central axis of the sleeve.

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