An adaptive flexible railway rail clamp

Abstract

The present invention discloses an adaptive flexible railway rail clamp, which relates to the technical field of railway facilities, and includes: a clamp base; an elastic clamping claw assembly arranged at one end of the clamp base, including a spring and a C-type clamping claw, the spring is arranged along the length direction, one end abuts against the step at the end of the clamp base, and the other end abuts against the back of the C-type clamping claw, the front opening of the C-type clamping claw faces the rail, and the C-type clamping claw can move along the length direction; an elbow-type horizontal pressure clamp arranged at the other end of the clamp base, including a push rod, the push rod is arranged along the length direction and can move along the direction; a non-elastic clamping claw arranged on the clamp base, the back of the non-elastic clamping claw abuts against the front end of the push rod, and the front is provided with a pressure block extending along the width direction. Through the above scheme, the fixing or disassembly with the rail can be completed conveniently and quickly, and at the same time, the clamp can maintain a good contact relationship with the rail, ensure the stability of the grounding resistance, and reduce the risk of accidents.

Description

Technical Field

[0001] The invention relates to the technical field of railway facilities, and in particular to an adaptive flexible railway rail clamp. Background Art

[0002] In electrified railway sections, electrical testing and grounding work are required during overhead power outage operations. This is done by using grounding cables to reliably connect the power-off equipment to the rails to protect the safety of construction workers.

[0003] The traditional grounding cables currently used are generally composed of a grounding hook, a grounding wire and a "grounding shoe", where the "grounding shoe" is a simple "J"-shaped clamping mechanism that is installed at the bottom of the rail by bolting. The disassembly and assembly of this type of equipment is time-consuming and labor-intensive, with low operating efficiency and limited repair construction time; in addition, due to the limitations of the structure and the surface state of the rails at the construction site, the "J"-shaped clamping mechanism is not in firm contact with the lower edge of the rail, resulting in unstable grounding resistance, increasing the risk of accidents, and in serious cases, endangering the personal safety of construction workers. Summary of the invention

[0004] To this end, the present invention provides an adaptive flexible railway rail clamp to solve the technical problems in the prior art that the disassembly and assembly of the grounding shoe is time-consuming and labor-intensive, the grounding shoe and the lower edge of the grounding shoe rail are not in a firm contact, and the grounding resistance is unstable.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An adaptive flexible railway rail clamp, comprising:

[0007] A holder base;

[0008] An elastic clamping jaw assembly arranged on the upper side of one end of the clamping base comprises a spring and a C-shaped clamping jaw, wherein the spring is arranged along the length direction of the clamping base, one end of the spring abuts against the step at the end of the clamping base, and the other end abuts against the back of the C-shaped clamping jaw, the front opening of the C-shaped clamping jaw faces the other end of the clamping base, and the C-shaped clamping jaw can move along the length direction of the clamping base;

[0009] An elbow-type horizontal pressing fixture disposed on the upper side of the other end of the clamp base includes a push rod, which is disposed along the length direction of the clamp base and can move along the direction;

[0010] A non-elastic clamping claw is arranged on the clamp base, the back of the non-elastic clamping claw abuts against the front end of the push rod, and a pressing block extending along the width direction of the clamp base is arranged at the front.

[0011] Through the above scheme, the fixing or removal of the rail can be completed conveniently and quickly, and at the same time, the clamp can maintain a good contact relationship with the rail, ensuring the stability of the grounding resistance and reducing the risk of accidents.

[0012] Furthermore, the elastic clamp assembly also includes a push rod and a nut. One end of the push rod passes through the spring and is connected to the C-shaped clamp, and the other end passes through the step and is screwed and fixed with the nut.

[0013] Through the above solution, the spring preload can be adjusted.

[0014] Furthermore, the adaptive flexible railway rail clamp also includes a protective cover and a torsion spring hinge. The protective cover is a container with one end open. The protective cover is connected to the clamp base through the torsion spring hinge. Under the action of the torsion spring hinge, the protective cover covers the other end of the push rod and the nut inside.

[0015] Through the above solution, the threaded end and the nut of the push rod can be hidden, avoiding harm to the user of the device and the railway repair personnel.

[0016] Furthermore, the elastic clamp assembly also includes a knob, and the C-shaped clamp includes an integrally formed upper plate, a lower plate and a vertical plate connecting the upper plate and the lower plate, the knob is vertically screwed on the upper plate and the lower end of the knob can pass through the lower side of the upper plate.

[0017] Through the above solution, the clamp can be further tightened to ensure a stable connection between the clamp and the rail.

[0018] Furthermore, the elastic clamping jaw assemblies are provided in plurality, and the plurality of elastic clamping jaw assemblies are all located at the same end of the clamping base and are spaced apart along the width direction of the clamping base.

[0019] Through the above scheme, multiple flexible clamps can be formed, the clamping force is greater, the clamping effect is better, and the connection stability between the clamp and the rail is better.

[0020] Furthermore, the elbow-type horizontal pressure clamp also includes a clamp base, a handle and a double hinged head. The clamp base is arranged on the clamp base, the fixed end of the handle is hinged to the clamp base, one end of the double hinged head is hinged to a point above the fixed end of the handle hinge, and the other end is hinged to the rear end of the push rod.

[0021] Through the above solution, the forward and backward movement of the push rod can be controlled more conveniently and labor-savingly.

[0022] Furthermore, the clamp base is provided with a plurality of groups of bolt holes, which are distributed in the length direction of the clamp base, and the clamp base is screwed and fixed with a group of bolt holes by bolts.

[0023] Through the above scheme, the position of the clamp base can be adjusted, thereby adjusting the position of the elbow-type horizontal pressure clamp, so that the clamp can be suitable for different types of rails, such as rails of 50kg / m, 60kg / m and 75kg / m.

[0024] Furthermore, the adaptive flexible railway rail clamp also includes a first pin shaft, a first mounting groove is provided on the clamp base, the length direction of the first mounting groove is the same as the length direction of the clamp base, a first strip hole is provided on the side of the clamp base, the depth direction of the first strip hole penetrates the width direction of the clamp base and passes through the first mounting groove, the lower part of the C-shaped clamp is arranged in the first mounting groove, the first pin shaft is penetrated in the first strip hole and the middle section of the first pin shaft is fixed to the lower part of the C-shaped clamp.

[0025] Through the above solution, the C-shaped clamping jaw can only move along the length direction of the clamping base.

[0026] Furthermore, the adaptive flexible railway rail clamp also includes a second pin shaft, a second mounting groove is provided on the clamp base, the length direction of the second mounting groove is the same as the length direction of the clamp base, a second strip hole is provided on the side of the clamp base, the depth direction of the second strip hole penetrates the width direction of the clamp base and passes through the second mounting groove, the lower part of the non-elastic clamp is arranged in the second mounting groove, the second pin shaft is penetrated in the second strip hole and the middle section of the second pin shaft is fixed to the lower part of the non-elastic clamp.

[0027] Through the above solution, the non-elastic clamping claw can only move along the length direction of the clamping base.

[0028] Furthermore, the adaptive flexible railway rail clamp also includes a double-hole copper nose, which is transversely fixed to the back of the non-elastic clamp, the push rod is in a stepped shaft shape and has a reduced diameter at the front end, the front end diameter of the push rod passes through the hole of the double-hole copper nose, and the double-hole copper nose is limited at the step of the push rod.

[0029] Through the above scheme, the double-hole copper nose is connected to the contact network through a conductive cable. When the double-hole copper nose is in close contact with the non-elastic clamping claw, contact conductive application with the rail can be achieved.

[0030] The present invention has the following advantages:

[0031] The push rod moves forward to push the non-elastic clamp forward for a distance, so that the spacing between the non-elastic clamp and the C-type clamp is smaller than the width of the bottom of the rail; at this time, the non-elastic clamp supports the side edge of the bottom of the rail, and its pressure block clamps the upper edge of the side; the C-type clamp supports the other side edge of the bottom of the rail under the action of the spring elastic force, and the C-type clamp clamps the upper edge of the side; and the bottom surface of the rail is attached to the upper surface of the clamp base; in this way, the clamp and the rail are fixed. It can be seen that the clamp of the present invention only needs to control the push rod to move forward to complete the fixation of the clamp and the rail, and the push rod can be moved backward to release the connection between the clamp and the rail, which saves time and effort and has high operating efficiency; because the C-type clamp contacts the rail under the action of the spring elastic force to form a flexible contact, the C-type clamp and the non-elastic clamp can always keep the state of clamping the rail, so that the clamp and the rail maintain a good contact relationship, ensure the stability of the grounding resistance, and reduce the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0034] Figure 1 A schematic diagram of the overall structure of an adaptive flexible railway rail clamp provided by an embodiment of the present invention (when clamped);

[0035] Figure 2 A schematic diagram of the overall structure of the adaptive flexible railway rail clamp provided by an embodiment of the present invention (when not clamped);

[0036] Figure 3 A schematic diagram of the overall structure of the adaptive flexible railway rail clamp provided by an embodiment of the present invention (front view);

[0037] Figure 4 A schematic diagram of an elastic clamping claw assembly of an adaptive flexible railway rail clamp provided by an embodiment of the present invention;

[0038] Figure 5A schematic diagram of the positional relationship and connection relationship of the non-elastic clamping jaws, elbow-type horizontal pressing fixture and double-hole copper nose of the adaptive flexible railway rail clamp provided in an embodiment of the present invention.

[0039] In the figure: 1-rail, 2-clamp base, 21-torsion spring hinge, 22-protective cover, 23-first pin, 24-second pin, 25-first mounting slot, 26-first strip hole, 27-second mounting slot, 28-second strip hole, 3-elastic clamp assembly, 31-C-type clamp, 32-spring, 33-thrust rod, 34-knob, 4-elbow type horizontal pressure clamp, 41-clamp base, 42-push rod, 43-handle, 44-double hinge, 5-double-hole copper nose, 6-non-elastic clamp, 61-pressure block. DETAILED DESCRIPTION

[0040] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

[0042] As shown in the figure, an adaptive flexible railway rail clamp comprises a clamp base 2, an elastic clamp assembly 3, an elbow-type horizontal pressure clamp 4, a double-hole copper nose 5 and a non-elastic clamp 6. When in use, the clamp base 2 is transversely arranged below the rail 1 and in contact with the rail 1, the elastic clamp assembly 3 is located on one side of the rail 1, and the elbow-type horizontal pressure clamp 4, the double-hole copper nose 5 and the non-elastic clamp 6 are on the other side of the rail 1.

[0043] The length of the clamp base 2 is perpendicular or nearly perpendicular to the length of the rail 1, and includes a bottom plate and a step integrally formed at one end of the bottom plate. The step is provided with two through holes, which are arranged along the front-to-back direction (referring to the length direction of the clamp base 2, the moving direction of the push rod 42, and the moving direction of the C-type clamp 31) for passing through the push rod 33. The two through holes are spaced apart on the step along the width direction of the clamp base 2. The clamp base 2 is provided with three mounting grooves, two of which are used to install the C-type clamp 31, called the first mounting grooves 25, and one of which is used to install the non-elastic clamp 6, called the second mounting groove 27. The length direction of the first mounting groove 25 is the same as the length direction of the clamp base 2. The side of the clamp base 2 is provided with a first strip hole 26, the depth direction of the first strip hole 26 runs through the width direction of the clamp base 2 and passes through the two first mounting grooves 25, and the first pin 23 is passed through the first strip hole 26. The length direction of the second mounting groove 27 is the same as the length direction of the clamp base 2. The side of the clamp base 2 is provided with a second strip hole 28. The depth direction of the second strip hole 28 penetrates the width direction of the clamp base 2 and passes through the second mounting groove 27. The second pin shaft 24 is inserted into the second strip hole 28. The side of the clamp base 2 provided with a step is called the first end. The first end is provided with a protective cover 22. The protective cover 22 is a container with one end open. The protective cover 22 is connected to the clamp base 2 through the torsion spring hinge 21. Under the action of the torsion spring hinge 21, the protective cover 22 is automatically buckled on the rear end of the mandrel 33 (with the moving direction of the C-shaped clamp 31 toward the rail 1 as the front) and the nut screwed on the rear end of the mandrel 33, hiding the threaded end and nut of the mandrel 33 to avoid harming the user of the device and the emergency repair personnel of the railway. A plurality of groups of bolt holes are provided on the clamp base 2, and the plurality of groups of bolt holes are distributed in the length direction of the clamp base 2. The elbow-type transverse pressure clamp 4 is screwed and fixed with a group of bolt holes by bolts. By selecting other groups of bolt holes, the distance between the elbow-type transverse pressure clamp 4 and the rail 1 can be adjusted, thereby adjusting the spacing between the non-elastic clamp 6 and the C-type clamp 31, so that the clamp is suitable for different types of rails 1, such as 50kg / m, 60kg / m and 75kg / m rails.

[0044] Two groups of elastic clamping jaw assemblies 3 are provided, which are arranged near the first end of the clamp base 2. Each group of elastic clamping jaw assemblies 3 includes a push rod 33, a nut, a spring 32, a C-shaped clamping jaw 31 and a knob 34. The push rod 33 is movably inserted into the through hole of the step, one end of which passes through the spring 32 and is connected to the C-shaped clamping jaw 31, and the other end has a thread and is screwed with the nut. The spring 32 is sleeved outside the push rod 33, with the rear end abutting against the step and the front end abutting against the C-shaped clamping jaw 31. The C-type clamp 31 includes an upper plate, a lower plate and a vertical plate connected to the upper plate and the lower plate, which are formed in one piece; the upper plate and the lower plate are parallel and located on the front side of the vertical plate, and the opening design formed in this way can clamp the side of the bottom of the rail 1; the top rod 33 is connected to the vertical plate, and the spring 32 is against the vertical plate; the lower plate is located in the first mounting groove 25, and the length of the bottom plate is less than the length of the first mounting groove 25, so it can move in the first mounting groove 25 along the length direction, and the middle section of the first pin shaft 23 is penetrated in the lower plate, and the first pin shaft 23 can only slide along the first strip hole 26, so that the C-type clamp 31 can only move in the front-back direction (the length direction of the clamp base 2, that is, the direction close to and away from the rail 1). The knob 34 is vertically screwed on the upper plate and the lower end of the knob 34 can pass through the lower side of the upper plate. The knob 34 is used for further tightening to ensure the stable connection between the clamp and the rail 1.

[0045] The elbow-type horizontal pressure clamp 4 is arranged at the other end of the clamp base 2, that is, the second end. The elbow-type horizontal pressure clamp 4 includes a clamp base 41, a handle 43, a double hinged head 44 and a push rod 42. The clamp base 41 is fixed to the clamp base 2 by screws or bolts, and a group of bolt holes of the clamp base 2 is selected for connection. When adjustment is required, other groups of bolt holes are selected; generally, a group of bolt holes is 4. The fixed end (lower end, hinged end) of the handle 43 is hinged to the clamp base 41, and the other end is the operating end (free end, upper end). One end of the double hinged head 44 is hinged to a point above the fixed end of the handle 43, and the other end is hinged to the rear end of the push rod 42 (referring to the end away from the rail 1). The push rod 42 is arranged along the front-to-back direction (moving toward the rail 1 is forward, moving away from the rail 1 is backward, and the front-to-back direction refers to the length direction of the clamp base 2). When the handle 43 swings around the hinge axis of its fixed end, the push rod 42 can move along the front-to-back direction driven by the double hinge head 44. In this way, the forward and backward movement of the push rod 42 can be controlled more conveniently and labor-savingly. The front end of the push rod 42 is in the shape of a stepped shaft, and the front end is reduced in diameter to form a thin shaft, which is inserted into a hole of the double-hole copper nose 5, and the front end of the thin shaft is abutted or connected to the non-elastic clamping claw 6; the thin shaft is short, so the double-hole copper nose 5 is forced to fit tightly with the back side (the side away from the rail 1) of the non-elastic clamping claw 6 after being limited by the stepped shaft, and the double-hole copper nose 5 is connected to the contact network through a conductive cable. When the double-hole copper nose 5 is in close contact with the non-elastic clamping claw 6, the contact conductive application with the rail 1 can be achieved; in traditional construction, the double-hole copper nose 5 is connected by bolts, while in the above scheme, a stepped shaft is adopted, and the push rod 42 is used to support the structure of the non-elastic clamping claw 6 while the double-hole copper nose 5 is pressed tightly against the back of the non-elastic clamping claw 6, which greatly improves the construction efficiency and reduces the cumbersomeness of the disassembly and assembly process.

[0046] A pressure block 61 is provided at the front of the non-elastic clamping jaw 6. The pressure block 61 extends along the width direction of the clamp base 2, and its height is consistent with the height of the upper plate of the C-shaped clamping jaw 31. The bottom of the non-elastic clamping jaw 6 is connected to the second pin shaft 24, and generally the middle section of the second pin shaft 24 is passed through the bottom of the non-elastic clamping jaw 6. Since the second pin shaft 24 slides along the second strip hole 28, the non-elastic clamping jaw 6 is ensured to move in the front-to-back direction, which is also consistent with the moving direction of the push rod 42.

[0047] The adaptive flexible railway rail clamp of this embodiment can enhance the adaptability to the construction rail section for the following reasons: when the surface of the rail 1 has surface defects such as attached debris, rust, bulges or cracks, the traditional "J" type clamp, due to structural limitations, will not be in firm contact with the lower edge of the rail 1, resulting in unstable grounding resistance, reduced construction efficiency, increased accident risks, and in severe cases, endangering the personal safety of construction workers; while the adaptive flexible contact conductive railway rail clamp of the embodiment uses two elastic clamps (a combination of a spring 32 and a C-type clamp 31), which will always ensure stable and firm clamping under the action of the elastic force of the spring 32.

[0048] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An adaptive flexible railway rail clamp, characterized in that: include: A holder base; An elastic clamping jaw assembly arranged on the upper side of one end of the clamping base comprises a spring and a C-shaped clamping jaw, wherein the spring is arranged along the length direction of the clamping base, one end of the spring abuts against the step at the end of the clamping base, and the other end abuts against the back of the C-shaped clamping jaw, the front opening of the C-shaped clamping jaw faces the other end of the clamping base, and the C-shaped clamping jaw can move along the length direction of the clamping base; An elbow-type horizontal pressing fixture disposed on the upper side of the other end of the clamp base includes a push rod, which is disposed along the length direction of the clamp base and can move along the direction; A non-elastic clamping claw is arranged on the clamping base, the back of the non-elastic clamping claw is in contact with the front end of the push rod, and a pressing block is arranged at the front part thereof and extends along the width direction of the clamping base; The adaptive flexible railway rail clamp also includes a first pin shaft, a first mounting groove is provided on the clamp base, the length direction of the first mounting groove is the same as the length direction of the clamp base, a first strip hole is provided on the side of the clamp base, the depth direction of the first strip hole runs through the width direction of the clamp base and passes through the first mounting groove, the lower part of the C-shaped clamp is arranged in the first mounting groove, the first pin shaft is penetrated in the first strip hole and the middle section of the first pin shaft is fixed to the lower part of the C-shaped clamp.

2. The adaptive flexible railway rail clamp according to claim 1, characterized in that: The elastic clamp assembly also includes a push rod and a nut. One end of the push rod passes through the spring and is connected to the C-shaped clamp, and the other end passes through the step and is screwed and fixed with the nut.

3. The adaptive flexible railway rail clamp according to claim 2, characterized in that: The adaptive flexible railway rail clamp also includes a protective cover and a torsion spring hinge. The protective cover is a container with one end open. The protective cover is connected to the clamp base through the torsion spring hinge. Under the action of the torsion spring hinge, the protective cover covers the other end of the push rod and the nut inside.

4. The adaptive flexible railway rail clamp according to claim 1, characterized in that: The elastic clamp assembly also includes a knob, and the C-shaped clamp includes an integrally formed upper plate, a lower plate and a vertical plate connecting the upper plate and the lower plate. The knob is vertically screwed on the upper plate and the lower end of the knob can pass through the lower side of the upper plate.

5. The adaptive flexible railway rail clamp according to any one of claims 1 to 4, characterized in that: The elastic clamping claw assemblies are provided in plurality, and the plurality of elastic clamping claw assemblies are all located at the same end of the clamping base and are spaced apart along the width direction of the clamping base.

6. The adaptive flexible railway rail clamp according to claim 1, characterized in that: The elbow-type horizontal pressure clamp also includes a clamp base, a handle and a double hinged head. The clamp base is arranged on the clamp base, the fixed end of the handle is hinged to the clamp base, one end of the double hinged head is hinged to a point above the fixed end of the handle hinge, and the other end is hinged to the rear end of the push rod.

7. The adaptive flexible railway rail clamp according to claim 6, characterized in that: The clamp base is provided with a plurality of groups of bolt holes, which are distributed in the length direction of the clamp base, and the clamp base is screwed and fixed with a group of bolt holes by bolts.

8. The adaptive flexible railway rail clamp according to claim 1, characterized in that: The adaptive flexible railway rail clamp also includes a second pin shaft, a second mounting groove is provided on the clamp base, the length direction of the second mounting groove is the same as the length direction of the clamp base, a second strip hole is provided on the side of the clamp base, the depth direction of the second strip hole runs through the width direction of the clamp base and passes through the second mounting groove, the lower part of the non-elastic clamping jaw is arranged in the second mounting groove, the second pin shaft is penetrated in the second strip hole and the middle section of the second pin shaft is fixed to the lower part of the non-elastic clamping jaw.

9. The adaptive flexible railway rail clamp according to claim 1, characterized in that: The adaptive flexible railway rail clamp also includes a double-hole copper nose, which is transversely fixed to the back of the non-elastic clamping claw. The push rod is in a stepped shaft shape and has a reduced diameter at the front end. The front end diameter of the push rod passes through the hole of the double-hole copper nose, and the double-hole copper nose is limited at the step of the push rod.

Images