An eccentric cone extractor for railway turnout

Abstract

The utility model belongs to the field of railway tools, and discloses an eccentric cone extractor for railway turnouts, including a supporting device for supporting the extraction of eccentric cones, and also including a lifting device slidably installed at the center position of the supporting device for fixing and spirally lifting the eccentric cone. The bottom of the lifting device is provided with an outer hook device for rolling and pressing against the surface of the inner hole of the eccentric cone and then elastically expanding outward to hook the bottom of the eccentric cone after moving downward; the lifting device includes a sleeve, and a lifting nut is provided on the outside of the sleeve. The eccentric cone extractor for railway turnouts described in the utility model, through the setting of elastically expanding outward to hook the bottom of the eccentric cone, does not need to be aligned, only needs to be rotated, and the four hook claws can be elastically expanded outward to hook into the groove, which is convenient for operation; through the setting of rolling and pressing against the inner hole of the eccentric cone, the friction of the hook claw entering the inner hole is reduced, which further facilitates operation; through the setting of fixing the bottom, the four hook claws are pressed outward during lifting, which improves the stability of lifting.

Description

Technical Field

[0001] The utility model belongs to the field of railway tools, in particular to an eccentric cone extractor for railway turnouts. Background Art

[0002] The eccentric cone, also known as the eccentric adjustment cone, is a device in the fastener system of the high-speed railway turnout. It is used to adjust the lateral position of the turnout structure on the high-speed railway turnout. In the fine-tuning operation of the high-speed railway turnout, the adjustment of the turnout gauge and track direction is achieved by replacing the eccentric cone. Eccentric cones of different specifications correspond to corresponding levels of lateral adjustment distances. When replacing the eccentric cone of a new specification, the original eccentric cone needs to be removed and recovered. The cross-section of the eccentric cone is an ellipse on the outside and a perfect circle on the inside. The inner wall is smooth and cannot have adhesion, and the thickness of the side walls of the eccentric cone in all directions is inconsistent. Therefore, it is not easy to remove it in the actual replacement operation. If the eccentric cone is pried out with a crowbar or other tools, it is easy to cause the eccentric cone to deform or even crack. If the resulting fragments are retained in the hole of the eccentric cone assembled in the base plate, they must be cleaned out before a new eccentric cone can be replaced, which is time-consuming and labor-intensive, and it is difficult to improve the operation efficiency. In order to save time, there are operating tools that can hook and pull out the eccentric cone.

[0003] In comparison, a Chinese patent with authorization announcement number CN219670966U discloses an eccentric cone extractor for a railway turnout, including a support seat and a lifting mechanism for lifting the eccentric cone, the lifting mechanism including a screw rod, the screw rod passing through a vertical through hole of the support seat, an adjusting cylinder being threadedly connected to the screw rod and a plane bearing being sleeved on the screw rod, the plane bearing being located between the adjusting cylinder and the vertical through hole, the bottom end of the adjusting cylinder being movably connected to the upper part of the plane bearing, and the inner diameter of the plane bearing being larger than the diameter of the vertical through hole.

[0004] The above patented movable claw arrangement requires the claw to be aligned first and then forcefully expanded to hook into the groove when hooking the bottom of the eccentric cone, which is inconvenient to operate. Therefore, a new device needs to be designed. Utility Model Content

[0005] The utility model aims to provide an eccentric cone extractor for railway turnout to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An eccentric cone extractor for a railway turnout, comprising a supporting device for supporting the extraction of the eccentric cone, and a lifting device slidably installed at the center of the supporting device for fixing the eccentric cone and spirally lifting the eccentric cone, wherein the bottom of the lifting device is provided with an outer hook device for rolling against the inner hole surface of the eccentric cone and elastically expanding outward to hook the groove at the bottom of the eccentric cone after moving downward;

[0008] The lifting device comprises a sleeve, a lifting nut is arranged outside the sleeve, the lifting nut is threadedly connected to the sleeve, a screw is installed inside the sleeve, the screw is threadedly connected to the sleeve, a rotating block is arranged at the bottom of the screw, and a top block is rotatably installed under the rotating block;

[0009] The outer hook device comprises a lifting plate, four cantilevers are evenly installed at the four corners of the lifting plate, an elastic plate is installed between two opposite cantilevers, a hook claw is arranged under the cantilever, and a roller is arranged at the bottom of the hook claw.

[0010] Furthermore: the supporting device includes a supporting plate, four supporting legs are arranged at the four corners below the supporting plate, and foot pads are arranged at the bottom of the supporting legs.

[0011] Furthermore: a plane bearing is installed under the lifting nut, a grip sleeve is arranged on the lifting nut, the grip sleeve is cylindrical in shape, and a rubber anti-slip layer is arranged on the surface of the grip sleeve.

[0012] Furthermore: a knob is arranged on the top of the screw rod, and the knob is made of PVC material.

[0013] Furthermore: the middle part of the elastic plate is bent, and the bending directions of the two elastic plates are opposite.

[0014] Furthermore: the foot pad is connected to the leg bolts, and the foot pad is made of silicone material.

[0015] Compared with the prior art, the beneficial effects are:

[0016] The bottom of the eccentric cone is hooked by elastic expansion. No alignment is required. Just turn it and the four hooks can be elastically expanded and hooked into the groove, which is convenient for operation.

[0017] By rolling and clinging to the inner hole of the eccentric cone, the friction of the hook entering the inner hole is reduced, further facilitating the operation;

[0018] Through the setting of the lower top fixation, the four hook claws are pressed outwards during lifting, thereby improving the stability of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an eccentric cone extractor for a railway turnout according to the utility model;

[0020] Figure 2 This is an axonometric diagram of a support device for an eccentric cone extractor of a railway turnout according to the utility model;

[0021] Figure 3 It is a front cross-sectional view of a lifting device of an eccentric cone extractor of a railway turnout according to the utility model;

[0022] Figure 4 The utility model discloses an axonometric diagram of an outer hook device of an eccentric cone extractor for a railway turnout.

[0023] In the accompanying drawings, 101, support plate; 102, support leg; 103, foot pad; 201, sleeve; 202, plane bearing; 203, lifting nut; 204, grip sleeve; 205, screw rod; 206, knob; 207, rotating block; 208, top block; 301, lifting plate; 302, cantilever; 303, elastic plate; 304, hook; 305, roller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , an eccentric cone extractor for a railway turnout, comprising a supporting device for supporting the extraction of the eccentric cone, and also comprising a lifting device slidably installed at the center position of the supporting device for fixing the lower top and spirally lifting the eccentric cone. The bottom of the lifting device is provided with an outer hook device for rolling against the inner hole surface of the eccentric cone and then elastically expanding outward to hook the groove at the bottom of the eccentric cone after moving downward.

[0026] In this embodiment: the support device includes a support plate 101, four legs 102 are arranged at the four corners below the support plate 101, foot pads 103 are arranged at the bottom of the legs 102, the foot pads 103 are bolted to the legs 102, the foot pads 103 are made of silicone material, and the support plate 101 provides support force for lifting under the support of the foot pads 103 and the legs 102;

[0027] In this embodiment, the lifting device includes a sleeve 201, a lifting nut 203 is arranged outside the sleeve 201, the lifting nut 203 is threadedly connected to the sleeve 201, a plane bearing 202 is installed below the lifting nut 203, a grip sleeve 204 is arranged above the lifting nut 203, a screw rod 205 is installed inside the sleeve 201, the screw rod 205 is threadedly connected to the sleeve 201, a knob 206 is arranged on the top of the screw rod 205, a rotating block 207 is arranged at the bottom of the screw rod 205, a top block 208 is rotatably installed below the rotating block 207, the grip sleeve 204 is cylindrical in shape, and the grip sleeve 204 is cylindrical. The surface is provided with a rubber anti-skid layer, and the knob 206 is made of PVC. When the outer hook device hooks the bottom of the eccentric cone, the screw rod 205 is rotated by the knob 206, so that the top block 208 is pushed downward by the rotating block 207 under the support of the sleeve 201, and the outer hook device is fixed tightly. Then, the grip sleeve 204 is held by hand to rotate the lifting nut 203, so that it drives the plane bearing 202 to move downward. When the plane bearing 202 contacts the support plate 101, the lifting nut 203 is continuously rotated to push the sleeve 201 to move upward, thereby driving the lifting plate 301 to move upward to pull out the eccentric cone.

[0028] In this embodiment: the outer hook device includes a lifting plate 301, four cantilevers 302 are evenly installed at the four corners of the lifting plate 301, an elastic plate 303 is installed between two relatively cantilever arms 302, a hook 304 is arranged below the cantilever arm 302, a roller 305 is arranged at the bottom of the hook 304, the middle of the elastic plate 303 is bent, and the bending directions of the two elastic plates 303 are opposite, so that the four hooks 304 squeeze the elastic plate 303 through the cantilever arm 302 to shrink inward, so that the four hooks 304 can enter the inner hole of the eccentric cone at the same time, and the sleeve 201 is lifted by the lifting plate 301. The plate 301 drives the outer hook device to move downward, and the four claws 304 move downward to the bottom of the eccentric cone under the support of the roller 305, and then the lifting plate 301 is rotated through the sleeve 201 to align the claws 304 with the groove at the bottom of the eccentric cone. At this time, the claws 304 will expand outward and automatically hook into the groove at the bottom of the eccentric cone under the action of the elastic plate 303. Finally, the screw rod 205 is rotated by the knob 206, so that the top block 208 is pushed downward through the rotating block 207 under the support of the sleeve 201, and the four claws 304 are tightened to complete the fixation of the eccentric cone before lifting.

[0029] Working principle: When in use, place the device above the eccentric cone, then make the four claws 304 squeeze the elastic plate 303 through the cantilever 302 to retract inward, so that the four claws 304 can enter the inner hole of the eccentric cone at the same time, then make the sleeve 201 drive the outer hook device to move downward through the lifting plate 301, and move the four claws 304 downward to the bottom of the eccentric cone under the support of the roller 305, then rotate the lifting plate 301 through the sleeve 201 to align the claws 304 with the groove at the bottom of the eccentric cone, and then the claws 304 will expand outward under the action of the elastic plate 303 and automatically hook into the eccentric cone The bottom groove is finally rotated by the knob 206 to rotate the screw rod 205, thereby pushing the top block 208 downward through the rotating block 207 under the support of the sleeve 201, tightening the four hook claws 304, and completing the fixation of the eccentric cone before lifting; when lifting, hold the grip sleeve 204 and rotate the lifting nut 203 to drive the plane bearing 202 to move downward. When the plane bearing 202 contacts the support plate 101, continue to rotate the lifting nut 203 to push the sleeve 201 upward under the support of the foot pad 103 and the support leg 102, thereby driving the lifting plate 301 to move upward to pull out the eccentric cone.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An eccentric cone extractor for a railway turnout, comprising a supporting device for supporting the extraction of the eccentric cone, characterized in that: It also includes a lifting device slidably installed at the center of the support device for fixing the lower top and spirally lifting the eccentric cone, and the bottom of the lifting device is provided with an outer hook device for rolling against the inner hole surface of the eccentric cone and elastically expanding outward to hook the groove at the bottom of the eccentric cone after moving downward; The lifting device comprises a sleeve (201), a lifting nut (203) is arranged outside the sleeve (201), the lifting nut (203) is threadedly connected to the sleeve (201), a screw rod (205) is installed inside the sleeve (201), the screw rod (205) is threadedly connected to the sleeve (201), a rotating block (207) is arranged at the bottom of the screw rod (205), and a top block (208) is rotatably installed below the rotating block (207); The external hook device comprises a lifting plate (301), four cantilevers (302) are evenly installed at the four corners of the lifting plate (301), an elastic plate (303) is installed between two opposite cantilevers (302), a hook claw (304) is arranged below the cantilever (302), and a roller (305) is arranged at the bottom of the hook claw (304).

2. The eccentric cone extractor for railway turnout according to claim 1, characterized in that: The support device comprises a support plate (101), four supporting legs (102) are arranged at four corners below the support plate (101), and foot pads (103) are arranged at the bottom of the supporting legs (102).

3. The eccentric cone extractor for railway turnout according to claim 1, characterized in that: A plane bearing (202) is installed below the lifting nut (203), and a grip sleeve (204) is arranged above the lifting nut (203). The grip sleeve (204) is cylindrical in shape, and a rubber anti-slip layer is arranged on the surface of the grip sleeve (204).

4. The eccentric cone extractor for railway turnout according to claim 1, characterized in that: A knob (206) is provided on the top of the screw rod (205), and the knob (206) is made of PVC material.

5. The eccentric cone extractor for railway turnout according to claim 1, characterized in that: The middle portion of the elastic plate (303) is bent, and the two elastic plates (303) are bent in opposite directions.

6. The eccentric cone extractor for railway turnout according to claim 2, characterized in that: The foot pad (103) is bolted to the supporting leg (102), and the foot pad (103) is made of silica gel.

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