Rail clamping device of mobile locomotive

Abstract

The utility model relates to the technical field of rail clamping devices, and provides a movable locomotive rail clamping device which comprises a support, a guide rod, a two-way threaded lead screw, two clamping plates, a speed reducer and a torque limiter. The bidirectional threaded screw rod is rotationally arranged on the bracket; the clamping plates are arranged on the guide rod in a sliding mode, and the two clamping plates are arranged in parallel in a spaced mode and connected with the two ends of the two-way threaded lead screw in a threaded fit mode correspondingly. The speed reducer is fixedly arranged on the bracket; and the torque limiter is fixedly arranged between the bidirectional threaded screw rod and the output end of the speed reducer. According to the rail clamping device, due to the arrangement of the torque limiter, the bidirectional threaded lead screw and the output end of the speed reducer can be fixedly connected, the speed reducer can drive the clamping plate to clamp a guide rail, overload protection can be conducted on the speed reducer, the speed reducer is prevented from being damaged due to overlarge load, and therefore safe operation of the rail clamping device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rail clamping devices, in particular to a rail clamping device for a mobile locomotive. Background Art

[0002] The rail clamping device plays a role in clamping the guide rail of the locomotive. When a conveyor-type mobile locomotive moves on the guide rail and conveys materials, the rail clamping device can be used to stop the locomotive at a fixed position, so that the materials can be accurately conveyed to the designated location.

[0003] The patent document with the publication number of CN220331092U discloses a guide rail clamping device for a fatigue test platform of a tooth engaging mechanism, which includes a fixed seat. A lead screw, two guide rods and a power component are arranged on the fixed seat. The lead screw includes a right-hand thread section, a left-hand thread section and a limit section. A first slider is arranged on the right-hand thread section and its corresponding guide rod, and a second slider is arranged on the left-hand thread section and its corresponding guide rod. When the lead screw rotates forward, the first slider and the second slider slide synchronously towards the limit section; when the lead screw rotates reversely, the first slider and the second slider slide synchronously away from the limit section; a first clamping block is arranged on the first slider, and a second clamping block is arranged on the second slider. When the lead screw rotates forward, the first clamping block and the second clamping block cooperate to fix the tooth rail, which can ensure that the center line of the tooth rail can coincide with the center line of the gear, avoid repeated adjustment during the fixing process of the tooth rail, and improve the convenience of the fixing operation and the test efficiency.

[0004] In the above technical solution, in order to move the first slider and the second slider, a power component and a lead screw are arranged. However, when the first clamping block and the second clamping block clamp the track, a large torque will be generated on the lead screw, resulting in the overloading operation of the power component, affecting the service life of the power component, and even burning out the motor, causing safety accidents. Content of the Utility Model

[0005] In view of this, the utility model provides a rail clamping device for a mobile locomotive, which can avoid the overloading operation of the speed reducer and ensure the safe operation of the rail clamping device.

[0006] The technical solution of the utility model is realized as follows: The utility model provides a rail clamping device for a mobile locomotive, which includes a bracket, a guide rod, a double-threaded lead screw, two clamping plates, a speed reducer and a torque limiter. Among them,

[0007] The guide rod is fixedly arranged on the bracket;

[0008] The double-threaded lead screw is rotatably arranged on the bracket and is parallel and spaced from the guide rod;

[0009] The clamping plates are slidably arranged on the guide rod. The two clamping plates are parallel and spaced, and are respectively connected to both ends of the double-threaded lead screw through thread fit;

[0010] The speed reducer is fixedly arranged on the bracket, and its output end is coaxially arranged with the double-threaded lead screw;

[0011] The torque limiter is fixedly arranged between the output end of the double-threaded lead screw and the speed reducer.

[0012] On the basis of the above technical solutions, preferably, the guide rod includes a sliding shaft and a limit block, wherein,

[0013] The sliding shaft is fixedly arranged on the bracket, is parallel to the double-threaded lead screw, and the clamping plate is slidably arranged on the sliding shaft;

[0014] The limit block is fixedly arranged on the sliding shaft and is located on one side of one of the clamping plates away from the other clamping plate.

[0015] More preferably, there are two limit blocks, and the two clamping plates are arranged between the two limit blocks.

[0016] More preferably, the distance between one of the clamping plates and one of the limit blocks is not equal to the distance between the other clamping plate and the other limit block.

[0017] On the basis of the above technical solutions, preferably, the clamping plate includes a mounting frame and a friction plate, wherein,

[0018] The mounting frame is slidably arranged on the guide rod, the two mounting frames are parallel and spaced apart, and are respectively connected to both ends of the double-threaded lead screw through threaded cooperation;

[0019] The friction plate is fixedly arranged on the side of the mounting frame close to the guide rail.

[0020] More preferably, it further includes two rollers, and the rollers are rotatably arranged on the bracket for rolling connection with the guide rail;

[0021] The friction plate is located between the two rollers, and the friction plate and the two rollers are spaced apart along the length direction of the guide rail.

[0022] On the basis of the above technical solutions, preferably, it further includes a hinge seat, and the hinge seat is rotatably arranged on the bracket for fixed connection with the mobile locomotive.

[0023] More preferably, the hinge seat includes a rotating shaft, a connecting seat and a baffle plate, wherein,

[0024] The rotating shaft is rotatably arranged on the bracket, and a clamping groove is provided on its circumferential side;

[0025] The connecting seat is slidably arranged on the rotating shaft and is used for fixedly connecting with a moving locomotive;

[0026] The baffle is fixedly arranged on the connecting seat and is clamped with the clamping groove.

[0027] More preferably, the connecting seat includes a connecting plate and two support plates. Among them,

[0028] The connecting plate is used for fixedly connecting with a moving locomotive;

[0029] The support plates are fixedly arranged on the connecting plate, are slidably connected with the rotating shaft, are fixedly connected with the baffle, the bracket is arranged between the two support plates, and the bracket is slidably connected with the rotating shaft.

[0030] On the basis of the above technical solutions, preferably, the bracket includes a fixed seat, a housing and a viewing window. Among them,

[0031] The guide rod, the double-threaded lead screw, the clamping plate and the speed reducer are all arranged on the fixed seat;

[0032] The housing is fixedly arranged on the fixed seat and is located above the guide rod, the double-threaded lead screw and the clamping plate;

[0033] The viewing window is fixedly arranged on the housing.

[0034] The rail clamp of the moving locomotive of the present utility model has the following beneficial effects compared with the prior art:

[0035] (1) By setting the torque limiter, not only can the output ends of the double-threaded lead screw and the speed reducer be fixedly connected, so that the speed reducer can drive the clamping plate to clamp the guide rail, but also the speed reducer can be protected against overload, avoiding damage to the speed reducer due to excessive load, thereby ensuring the safe operation of the present rail clamp;

[0036] (2) By setting two rollers and the hinge seat rotatably connected with the bracket, when the moving locomotive moves uphill or downhill, the clamping plate can be prevented from disengaging from the guide rail, thereby improving the effectiveness of the present rail clamp;

[0037] (3) By setting the limit block, the opening and closing stroke of the clamping plate can be limited, and by setting the baffle and the clamping groove, the hinge seat can be conveniently fixedly installed, thereby improving the use convenience of the present rail clamp. Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a three-dimensional view of the mobile locomotive rail clamp of the present invention;

[0040] Figure 2 It is a cross-sectional view of the mobile locomotive rail clamp of the present invention;

[0041] Figure 3 It is a front view of the mobile locomotive rail clamp of the present invention;

[0042] Figure 4 It is an exploded view of the articulated seat in the mobile locomotive rail clamp of the present invention;

[0043] Figure 5 It is a three-dimensional view of the bracket in the mobile locomotive rail clamp of the present invention.

[0044] Wherein: 1. Bracket; 11. Fixed seat; 12. Outer shell; 13. Window; 2. Guide rod; 21. Sliding shaft; 22. Limit block; 3. Bi-directional threaded lead screw; 4. Clamping plate; 41. Mounting frame; 42. Friction plate; 5. Reducer; 6. Torque limiter; 7. Roller; 8. Articulated seat; 81. Rotating shaft; 82. Connecting seat; 821. Connecting plate; 822. Support plate; 83. Baffle; 801. Card slot; 9. Guide rail. Detailed implementation manners

[0045] The following will clearly and completely describe the technical solutions in the present invention in combination with the detailed implementation manners of the present invention. Obviously, the described implementation manners are only a part of the implementation manners of the present invention, rather than all of the implementation manners. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0046] As Figures 1-5 shown, the mobile locomotive rail clamp of the present invention includes a bracket 1, a guide rod 2, a bi-directional threaded lead screw 3, two clamping plates 4, a reducer 5, a torque limiter 6, two rollers 7 and an articulated seat 8, and is used to be installed at the bottom of the mobile locomotive and selectively clamp the guide rail 9 to achieve the braking function of the mobile locomotive.

[0047] Among them, the bracket 1 is used to carry other components.

[0048] The guide rod 2 is used to guide the clamping plate 4, and the guide rod 2 is fixedly arranged on the bracket 1.

[0049] The double-threaded lead screw 3 is used to drive the clamping plate 4. The double-threaded lead screw 3 is rotatably arranged on the bracket 1, is parallel and spaced from the guide rod 2, and the thread directions at both ends of the double-threaded lead screw 3 are opposite.

[0050] The clamping plate 4 is used to abut against and clamp the guide rail 9. The clamping plate 4 is slidably arranged on the guide rod 2. The two clamping plates 4 are parallel and spaced, and are respectively connected to both ends of the double-threaded lead screw 3 through thread fit; due to the opposite thread directions at both ends of the double-threaded lead screw 3, by using the thread fit between the double-threaded lead screw 3 and the clamping plate 4 and the sliding fit between the clamping plate 4 and the guide rod 2, when the double-threaded lead screw 3 rotates, it can drive the two clamping plates 4 to move towards or away from each other, so that the two clamping plates 4 can hold the guide rail 9 tightly or separate from the guide rail 9, realizing the braking function of the moving locomotive. For example, when the double-threaded lead screw 3 rotates clockwise, the two clamping plates 4 move towards each other to clamp the guide rail 9, realizing the braking effect of the moving locomotive. When the double-threaded lead screw 3 rotates counterclockwise, the two clamping plates 4 move away from each other to separate the clamping plate 4 from the guide rail 9, allowing the moving locomotive to continue moving.

[0051] The speed reducer 5 is used to drive the double-threaded lead screw 3 to rotate, and the speed reducer 5 is fixedly arranged on the bracket 1.

[0052] The torque limiter 6 is used to protect the speed reducer 5 against overload. The output end of the speed reducer 5 is coaxially arranged with the double-threaded lead screw 3. The torque limiter 6 is fixedly arranged between the double-threaded lead screw 3 and the output end of the speed reducer 5; the torque limiter 6 is a prior art, and is divided into friction type, elastic diaphragm type and electronic type according to different principles. It is a mechanical safety device that can limit the rotation of the rotating shaft within a certain torque range. When the preset limit value is reached, it can immediately stop the synchronous rotation of the rotating shafts at both ends to protect the safety of the equipment and avoid accidents; by arranging the torque limiter 6 between the speed reducer 5 and the double-threaded lead screw 3, not only can the two be fixedly connected, so that the operation of the speed reducer 5 drives the double-threaded lead screw 3 to rotate to ensure the rail clamping function of the present rail clamp, but also the output end of the speed reducer 5 can be limited and protected. When the torque received by the double-threaded lead screw 3 exceeds the preset value, the fixed connection between the output end of the speed reducer 5 and the double-threaded lead screw 3 can be disconnected, so that the two can rotate independently, avoiding damage to the speed reducer 5 due to excessive load, thereby ensuring the safe operation of the present rail clamp; the torque limiter 6 is preferably a torque limiter 6 with adjustable preset value to adapt to different speed reducers 5 or operating conditions.

[0053] Such as Figure 2As shown in the figure, the guide rod 2 includes a sliding shaft 21 and a limit block 22. The sliding shaft 21 is fixedly arranged on the bracket 1, parallel to the bidirectional threaded lead screw 3, and the clamping plate 4 is slidably arranged on the sliding shaft 21. The limit block 22 is fixedly arranged on the sliding shaft 21 and is located on one side of one clamping plate 4 away from the other clamping plate 4. When the clamping plate 4 moves in the direction away from the guide rail 9, it will abut against the limit block 22, so that the opening and closing stroke of the clamping plate 4 can be limited by the limit block 22, avoiding the excessive separation distance between the two clamping plates 4.

[0054] In order to improve the limiting effect of the limit block 22, it is preferably to have two limit blocks 22, and the two clamping plates 4 are arranged between the two limit blocks 22. As Figure 2 shown, it is preferably that the distance between one clamping plate 4 and one limit block 22 is not equal to the distance between the other clamping plate 4 and the other limit block 22, and the distances of the two are one large and one small. When the two clamping plates 4 move away from each other, one clamping plate 4 can abut against one limit block 22 first, so as to achieve the limiting effect on the clamping plate 4. If the limit block 22 is damaged by the clamping plate 4, when the clamping plate 4 continues to move, the other clamping plate 4 can abut against the other limit block 22 to ensure the limiting effect of the limit block 22 by means of segmented limiting.

[0055] As Figure 2 shown, the clamping plate 4 includes a mounting frame 41 and a friction plate 42. Among them, the mounting frame 41 is slidably arranged on the guide rod 2. The two mounting frames 41 are arranged in parallel and at intervals, and are respectively connected to both ends of the bidirectional threaded lead screw 3 through threaded cooperation. The mounting frame 41 is preferably L-shaped to improve the space utilization rate of the mounting frame 41. The friction plate 42 is fixedly arranged on the side of the mounting frame 41 close to the guide rail 9. It is usually made of rubber material with a large friction force, which can better clamp the guide rail 9. At the same time, the friction plate 42 can also be replaced regularly according to its usage situation.

[0056] The roller 7 is used to abut against the guide rail 9 and is in rolling connection with the guide rail 9. The roller 7 is rotatably arranged on the bracket 1, specifically arranged on its bottom side. The friction plate 42 is located between the two rollers 7, and the friction plate 42 and the two rollers 7 are arranged at intervals along the length direction of the guide rail 9. By arranging the roller 7, the rail clamp can be directly in rolling connection with the guide rail 9, so that it can replace the driving wheel of the mobile locomotive and optimize the structure of the mobile locomotive.

[0057] The articulated seat 8 is used for fixedly connecting with the mobile locomotive. The articulated seat 8 is rotatably arranged on the bracket 1. At least two rows of this rail clamp are arranged on each mobile locomotive. Each row of rail clamps includes at least two rail clamps arranged along the length direction of the guide rail 9. When the mobile locomotive moves uphill and the rail clamp in front of the mobile locomotive contacts the inclined guide rail 9 and the rail clamp behind the mobile locomotive contacts the horizontal guide rail 9, by using the rotation of the articulated seat 8 and the bracket 1, the rollers 7 on each rail clamp can be made to abut against the guide rail 9, and the friction plates 42 on each rail clamp can be made to be located at the side of the guide rail 9, avoiding the friction plates 42 disengaging from the guide rail 9 in this case, so as to ensure the braking function of this rail clamp; when the mobile locomotive moves downhill and the rail clamp in front of the mobile locomotive contacts the horizontal guide rail 9 and the rail clamp behind the mobile locomotive contacts the inclined guide rail 9, the effect is the same as the above effect.

[0058] As Figure 3 and Figure 4 shown, the articulated seat 8 includes a rotating shaft 81, a connecting seat 82 and a baffle 83. The rotating shaft 81 is rotatably arranged on the bracket 1, and a clamping groove 801 is formed on its peripheral side; the connecting seat 82 is slidably arranged on the rotating shaft 81 and is used for fixedly connecting with the mobile locomotive; the baffle 83 is fixedly arranged on the connecting seat 82 and is engaged with the clamping groove 801, so that not only the rotational connection between the connecting seat 82 and the bracket 1 can be realized, but also the rotation of the rotating shaft 81 and the connecting seat 82 during the use of this rail clamp can be avoided.

[0059] As Figure 4 shown, the connecting seat 82 includes a connecting plate 821 and two support plates 822. The connecting plate 821 is used for fixedly connecting with the mobile locomotive; the support plates 822 are fixedly arranged on the connecting plate 821, are slidably connected with the rotating shaft 81 and are fixedly connected with the baffle 83. The bracket 1 is arranged between the two support plates 822, and the bracket 1 is slidably connected with the rotating shaft 81, so that not only the disassembly and assembly of the articulated seat 8 can be facilitated, but also when the mobile locomotive moves and the two clamping plates 4 clamp the guide rail 9, the two clamping plates 4 can be automatically centered, avoiding the problem that a single clamping plate 4 is severely worn.

[0060] As Figure 5As shown in the figure, the bracket 1 includes a fixed seat 11, a housing 12 and a viewing window 13. Among them, the guide rod 2, the double-threaded screw rod 3, the clamping plate 4 and the speed reducer 5 are all arranged on the fixed seat 11; the housing 12 is fixedly arranged on the fixed seat 11 and is located above the guide rod 2, the double-threaded screw rod 3 and the clamping plate 4 to shield the guide rod 2, the double-threaded screw rod 3 and the clamping plate 4 and reduce the dust accumulation on the surfaces of the guide rod 2, the double-threaded screw rod 3 and the clamping plate 4; the viewing window 13 is fixedly arranged on the housing 12, and a perforation is opened on the housing 12, and the viewing window 13 is hermetically fixed in this perforation, so that the guide rod 2, the double-threaded screw rod 3 and the clamping plate 4 below the housing 12 can be observed through the viewing window 13 above the rail clamp, facilitating the operator to preliminarily check the conditions of the guide rod 2, the double-threaded screw rod 3 and the clamping plate 4 when overhauling the rail clamp.

[0061] The working principle of the mobile locomotive rail clamp of the present utility model is as follows:

[0062] When the speed reducer 5 is started, it can drive the double-threaded screw rod 3 to rotate, so that the two clamping plates 4 move towards or away from each other to clamp or leave the guide rail 9, and selectively brake the mobile locomotive; when the clamping plate 4 clamps the guide rail 9, if the clamping force is too large, the torque limiter 6 starts the protection function, so that the output end of the speed reducer 5 loses the fixed connection state with the double-threaded screw rod 3, thus protecting the speed reducer 5 from overload.

[0063] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mobile locomotive rail clamp, characterized in that: It comprises a bracket (1), a guide rod (2), a bidirectional threaded screw (3), two clamping plates (4), a reducer (5) and a torque limiter (6), wherein: The guide rod (2) is fixedly arranged on the bracket (1); The bidirectional threaded screw (3) is rotatably arranged on the bracket (1) and is arranged parallel to and spaced from the guide rod (2); The clamping plate (4) is slidably arranged on the guide rod (2), and the two clamping plates (4) are arranged in parallel and at intervals, and are respectively connected to the two ends of the bidirectional threaded screw rod (3) through threaded matching; The reducer (5) is fixedly arranged on the bracket (1), and its output end is coaxially arranged with the bidirectional threaded screw (3); The torque limiter (6) is fixedly arranged between the bidirectional threaded screw (3) and the output end of the reducer (5).

2. The mobile locomotive rail clamp according to claim 1, characterized in that: The guide rod (2) comprises a sliding shaft (21) and a limit block (22), wherein: The sliding shaft (21) is fixedly arranged on the bracket (1) and is parallel to the bidirectional threaded screw (3), and the clamping plate (4) is slidably arranged on the sliding shaft (21); The limit block (22) is fixedly arranged on the sliding shaft (21) and is located on a side of one of the clamping plates (4) away from the other clamping plate (4).

3. The mobile locomotive rail clamp according to claim 2, characterized in that: Two limit blocks (22) are provided, and the two clamping plates (4) are provided between the two limit blocks (22).

4. The mobile locomotive rail clamp according to claim 3, characterized in that: The distance between one of the clamping plates (4) and one of the limiting blocks (22) is not equal to the distance between another of the clamping plates (4) and another of the limiting blocks (22).

5. The mobile locomotive rail clamp according to claim 1, characterized in that: The clamping plate (4) comprises a mounting frame (41) and a friction plate (42), wherein: The mounting frame (41) is slidably arranged on the guide rod (2), and the two mounting frames (41) are arranged in parallel and at intervals, and are respectively connected to the two ends of the bidirectional threaded screw rod (3) through threaded matching; The friction plate (42) is fixedly arranged on a side of the mounting frame (41) close to the guide rail (9).

6. The mobile locomotive rail clamp according to claim 5, characterized in that: It also includes two rollers (7), which are rotatably arranged on the bracket (1) and are used for rolling connection with the guide rail (9); The friction plate (42) is located between the two rollers (7), and the friction plate (42) and the two rollers (7) are arranged at intervals along the length direction of the guide rail (9).

7. The mobile locomotive rail clamp according to claim 1, characterized in that: It also comprises an articulated seat (8), which is rotatably arranged on the bracket (1) and is used for fixed connection with the mobile locomotive.

8. The mobile locomotive rail clamp according to claim 7, characterized in that: The hinge seat (8) comprises a rotating shaft (81), a connecting seat (82) and a baffle (83), wherein: The rotating shaft (81) is rotatably arranged on the bracket (1), and a slot (801) is provided on the peripheral side thereof; The connecting seat (82) is slidably arranged on the rotating shaft (81) and is used for fixed connection with the mobile locomotive; The baffle (83) is fixedly disposed on the connecting seat (82) and is engaged with the engaging groove (801).

9. The mobile locomotive rail clamp according to claim 8, characterized in that: The connecting seat (82) comprises a connecting plate (821) and two supporting plates (822), wherein: The connecting plate (821) is used for fixed connection with the mobile locomotive; The support plate (822) is fixedly arranged on the connecting plate (821), and is slidably connected to the rotating shaft (81), and is fixedly connected to the baffle (83); the bracket (1) is arranged between the two support plates (822), and the bracket (1) is slidably connected to the rotating shaft (81).

10. The mobile locomotive rail clamp according to claim 1, characterized in that: The bracket (1) comprises a fixing seat (11), a housing (12) and a viewing window (13), wherein: The guide rod (2), the bidirectional threaded screw rod (3), the clamping plate (4) and the reducer (5) are all arranged on the fixing seat (11); The housing (12) is fixedly arranged on the fixing seat (11) and is located above the guide rod (2), the bidirectional threaded screw rod (3) and the clamping plate (4); The viewing window (13) is fixedly arranged on the housing (12).

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