Deflection angle locking device for rail grinding apparatus

Abstract

The deflection angle locking device of the utility model provides, when the grinding device of the rail grinding equipment is adjusted to the target grinding angle relative to the frame of the rail grinding equipment, the deflection angle of the grinding system is locked. The deflection angle locking device of the utility model provides power unit (1), connecting unit (2), angle locking unit (3) and brake piece (4), when the grinding device is adjusted to the target grinding angle relative to the frame of the rail grinding equipment, power unit (1) exerts force on angle locking unit (3) through connecting unit (2), so as to push the friction plate (34) of angle locking unit (3) to clamp brake piece (4) in the middle from both sides, and the deflection angle of the grinding device is locked by the friction between the friction plate (34) and brake piece (4). The technical scheme of the utility model provides, the stability of large-angle grinding can be improved through the structural design of the deflection angle locking device, and the grinding precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of rail grinding, and in particular to a deflection angle locking device for rail grinding equipment. Background Technology

[0002] With increasingly stringent requirements for safety and comfort in rail transportation, and ever-increasing train speeds, rails suffer various forms of damage during operation, such as corrugation on the rail top surface and severe wear on the rail sides. Improving operational safety, reducing noise and vibration, and enhancing passenger comfort objectively necessitates rail grinding as an important means of track maintenance. Currently, rail grinding equipment primarily uses manually operated mechanical locking devices to fix the grinding angle, which cannot achieve automated locking, resulting in low grinding efficiency and poor precision. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a deflection angle locking device for rail grinding equipment, which can realize automatic locking of grinding angle, with high efficiency and high precision.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A deflection angle locking device for a rail grinding equipment is provided. The deflection angle locking device includes a power unit (1), a connecting unit (2), an angle locking unit (3), and a brake pad (4). The power unit (1) and the angle locking unit (3) are fixedly connected to the frame (M110) of the rail grinding equipment. The power unit (1) is connected to the angle locking unit (3) through the connecting unit (2). The brake pad (4) is fixedly connected to the grinding device of the rail grinding equipment. When the grinding device is adjusted to the target grinding angle relative to the frame (M110), the deflection angle locking device is used to lock the deflection angle of the grinding device.

[0006] Preferably, the angle locking unit (3) includes a main oil pump (31), a thrust oil pump (33), and a friction plate (34). The main oil pump (31) includes a main oil pump piston (312) and a main oil pump body (313). The thrust oil pump (33) includes a thrust oil pump piston (331) and a thrust oil pump body (332). The pump body oil chamber (32) of the main oil pump and the pump body oil chamber (36) of the thrust oil pump are connected by an oil passage (37) and filled with hydraulic oil. The thrust oil pump (33) and the friction plate (34) are respectively provided with at least two, respectively relative to the brake pad (4). Set on both sides; when the grinding device is adjusted to the target grinding angle relative to the frame (M110), the power unit (1) applies force to the main oil pump piston (312) through the connecting unit (2), drives the hydraulic oil in the pump body oil chamber (32) of the main oil pump to enter the pump body oil chamber (36) of at least two thrust oil pumps through the connected oil passage (37), pushes at least two thrust oil pump pistons (331) to move towards each other, and then pushes the friction plate (34) to clamp the brake plate (4) in the middle from both sides, relying on the friction between the friction plate (34) and the brake plate (4) to lock the deflection angle of the grinding device.

[0007] Preferably, the brake pad (4) is fixedly connected to the rotating shaft (5) of the grinding device; the brake pad (4) is fan-shaped, the center of the fan shape is on the same axis as the center of the rotating shaft (5), and the angle of the center of the fan shape is in the range of 75° to 135°; the brake pad is set to the above-mentioned fan shape, which can reduce the occurrence of interference with the rail when deflecting during grinding.

[0008] Preferably, the brake pad (4) has inward clearance on both sides to avoid interference between the brake pad and the rail.

[0009] Specifically, the brake pad (4) has several holes at the position corresponding to the friction pad (34) to increase the locking friction between the brake pad (4) and the friction pad (34).

[0010] Specifically, at least two angle locking units (3) are provided in the rotation direction of the brake pad (4).

[0011] Specifically, the connecting unit (2) includes a spring (21), a rigid rope (22), a lever (23), and a push rod (24); the spring (21) is fixedly connected to the power unit (1), one end of the rigid rope (22) is connected to the spring (21), and the other end of the rigid rope (22) is connected to the end of the lever (23); the other end of the lever (23) is rotatably connected to the angle locking unit (3); one end of the push rod (24) is fixedly connected to the main oil pump piston (312), and the other end of the push rod (24) is connected to the middle of the lever (23); when the rigid rope (22) pulls the lever (23) to rotate relative to the angle locking unit (3) under the action of the power unit (1), the lever (23) pushes the push rod (24) to squeeze the main oil pump piston (312) into the main oil pump body (313).

[0012] Preferably, the power unit (1) includes a motor (11) and a lead screw (12), the lead screw (12) converts the rotational motion of the motor (11) into linear motion; when the lead screw (12) contracts, it drives the spring (21) and the rigid rope (22) to pull the lever (23) to rotate relative to the angle locking unit (3).

[0013] Preferably, the main oil pump (31) further includes a return spring (311); the return spring (311) is disposed in the pump body (313) of the main oil pump, one end of the return spring (311) abuts against the end of the oil chamber (32) of the pump body of the main oil pump, and the other end abuts against the piston (312) of the main oil pump.

[0014] Preferably, the angle locking unit (3) further includes a spring plate (35), and at least two friction plates (34) disposed on both sides of the brake plate (4) are connected by the spring plate (35). When the thrust oil pump piston (331) is reset, the friction plate (34) is reset under the elastic force of the spring plate (35), so that a certain gap is maintained between the friction plate (34) and the brake plate (4).

[0015] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: the structural design of the deflection angle locking device can improve the stability of large-angle grinding and significantly improve the grinding accuracy.

[0016] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a rail grinding equipment with the deflection angle locking device of this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0019] Figure 3 This is a schematic diagram of the deflection angle locking device of this utility model;

[0020] Figure 4 Exploded view of the angle-locking unit structure;

[0021] Figure 5 This is a structural cross-sectional view of the angle locking unit;

[0022] Figure 6 This is a schematic diagram of the brake pad structure;

[0023] Figure 7 This is a schematic diagram showing the state when the brake pads deflect to one side at a large angle.

[0024] Figure 8 This is a schematic diagram showing the state when the brake pads deflect at a large angle to the other side.

[0025] Figure 9 This is an exploded view of the connecting unit of this utility model.

[0026] The reference numerals in the attached drawings include: 1-power unit, 11-motor, 12-lead screw, 2-connecting unit, 21-spring, 22-rigid rope, 23-lever, 24-push rod, 3-angle locking unit, 31-main oil pump, 311-reset spring, 312-main oil pump piston, 313-main oil pump body, 32-main oil pump body oil chamber, 33-thrust oil pump, 331-thrust oil pump piston, 332-thrust oil pump body, 34-friction plate, 35-spring plate, 36-thrust oil pump body oil chamber, 37-oil passage, 4-brake plate, 5-rotating shaft. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] like Figures 1-6 As shown, the deflection angle locking device M130 of the rail grinding equipment provided by this utility model is used to lock the deflection angle of the grinding system M110 relative to the frame M120 of the rail grinding equipment after the grinding system M110 is adjusted to the target grinding angle. The deflection angle locking device M130 includes a power unit 1, a connecting unit 2, an angle locking unit 3, and a brake pad 4; the power unit 1 and the angle locking unit 3 are fixedly connected to the frame M120 of the rail grinding equipment, the power unit 1 is connected to the angle locking unit 3 through the connecting unit 2, and the brake pad 4 is fixedly connected to the grinding device of the rail grinding equipment; when the grinding device is adjusted to the target grinding angle relative to the frame M120, the deflection angle locking device is used to lock the deflection angle of the grinding device.

[0032] More specifically, such as Figures 1-4 As shown, the power unit 1 is fixedly connected to the frame M120 of the rail grinding equipment, the angle locking unit 3 is fixedly connected to the power unit 1 through the connecting unit 2, and the brake pad 4 is fixedly connected to the rotating shaft 5 of the grinding system M110.

[0033] Combination Figures 3-5As shown, the angle locking unit 3 includes a main oil pump 31, a thrust oil pump 33, and friction plates 34. The main oil pump 31 includes a main oil pump piston 312 and a main oil pump body 313. The thrust oil pump 33 includes a thrust oil pump piston 331 and a thrust oil pump body 332. The pump body oil chamber 32 of the main oil pump and the pump body oil chamber 36 of the thrust oil pump are connected by an oil passage 37 and filled with hydraulic oil. At least two thrust oil pumps 33 and friction plates 34 are respectively provided, respectively arranged on both sides of the brake pad 4; when the grinding device After the relative frame M120 is adjusted to the target grinding angle, the power unit 1 applies force to the main oil pump piston 312 through the connecting unit 2, driving the hydraulic oil in the main oil pump body oil chamber 32 to enter the oil chambers 36 of at least two thrust oil pumps through the connected oil passage 37, pushing at least two thrust oil pump pistons 331 to move towards each other, thereby pushing the friction plate 34 to clamp the brake plate 4 in the middle from both sides, relying on the friction between the friction plate 34 and the brake plate 4 to lock the deflection angle of the grinding device.

[0034] Preferably, the brake pad 4 is fixedly connected to the rotating shaft 5 of the grinding system M110. Understandably, in combination with... Figure 1 and Figure 2 As shown, the bottom of the grinding system M110 is connected to the rotating shaft 5, and rotates relative to the frame M120 of the rail grinding equipment via the rotating shaft 5 to adjust the deflection angle of the grinding system M110. In the deflection angle locking device M130 of the rail grinding equipment provided by this utility model, the brake pad 4 is fixedly connected to the rotating shaft 5. Specifically, in this embodiment, as shown... Figures 1-3 As shown, a through hole is provided on the lower side of the brake pad 4, and it is fixedly sleeved to the rotating shaft 5 through the through hole. As the rotating shaft 5 rotates, the brake pad 4 deflects accordingly.

[0035] Preferably, the main oil pump 31 also includes a reset spring 311; the reset spring 311 is disposed inside the pump body 313 of the main oil pump, one end of the reset spring 311 abuts against the end of the oil chamber 32 of the pump body of the main oil pump, and the other end abuts against the piston 312 of the main oil pump; the setting of the reset spring 311 can enable the deflection angle locking device M130 provided by this utility model to automatically reset and release the clamping of the brake pad 4 when it is freed from the external force of the power unit 1, thereby enabling the grinding system M110 to rotate to adjust the angle.

[0036] The specific working process is as follows: When the grinding system M110 rotates to the target angle and needs to be locked, the power unit 1 applies a certain force to the main oil pump piston 312 of the angle locking unit 3 through the connecting unit 2. Hydraulic oil is pumped through the oil passage 37 to push multiple thrust oil pump pistons 33 to move towards each other. The thrust oil pump pistons 33 push the friction plate 34 to clamp the brake plate 4 in the middle from both sides, thereby restricting the rotation of the rotating shaft 5 fixedly connected to the brake plate 4. The deflection angle locking function is achieved by relying on the friction between the friction plate 34 and the brake plate 4. When it is necessary to release the angle lock, the power unit 1 does not apply any force to the main oil pump 31. The return spring 311 in the main oil pump 31 rebounds, the main oil pump piston 312 returns to the initial position, the hydraulic oil in the thrust oil pump 33 flows back into the main oil pump 31, the force applied to the friction plate 34 disappears, the friction plate 34 resets, and the brake plate 4 can rotate with the rotating shaft 5.

[0037] like Figure 7 As shown, the brake pad 4 is further fan-shaped, and the center of the fan shape is on the same axis as the center of the rotating shaft 5. The angle of the center of the fan shape is in the range of 75° to 135°. The brake pad is set to the above-mentioned fan shape, which can reduce the occurrence of interference with the rail when deflecting during grinding.

[0038] In a preferred embodiment, such as Figure 7 As shown, the brake pad 4 has inward clearance positions on both sides; the clearance positions can ensure that the brake pad 4 does not interfere with the rail during grinding.

[0039] like Figure 7 As shown, the brake pad 4 has several holes at the position corresponding to the friction pad 34 to increase the locking friction between the brake pad 4 and the friction pad 34.

[0040] Preferably, at least two angle locking units 3 are provided in the rotation direction of the brake pad 4. At least two angle locking units 3 are provided and are fixedly installed on the frame M120 of the rail grinding equipment relative to the brake pad 4, ensuring that when the grinding system M110 deflects at a large angle in any direction, at least one angle locking unit 3 can clamp the brake pad 4 to generate friction and achieve the deflection angle locking function.

[0041] In this embodiment, the power unit 1 includes a motor 11 and a lead screw 12, which converts the rotational motion of the motor 11 into linear motion. When the lead screw 12 retracts, it drives the spring 21 and the rigid rope 22 to pull the lever 23 to rotate relative to the angle locking unit 3.

[0042] Preferably, the oil chamber 32 of the main oil pump body is connected to and filled with hydraulic oil for the corresponding two thrust oil pump bodies 36. When the piston 312 of the main oil pump is squeezed and moves inward, the hydraulic oil is pressurized and acts on the connected oil chamber of the pump body through the oil passage 37, and then acts on the pistons 331 of the two thrust oil pumps at the same time, thereby realizing the locking of the deflection angle of the grinding system M110.

[0043] Better, such as Figure 3 and Figure 8 As shown, the connecting unit 2 includes a spring 21, a rigid rope 22, a lever 23, and a push rod 24. The spring 21 is fixedly connected to the power unit 1. One end of the rigid rope 22 is connected to the spring 21, and the other end of the rigid rope 22 is connected to the end of the lever 23. The other end of the lever 23 is rotatably connected to the angle locking unit 3. One end of the push rod 24 is fixedly connected to the main oil pump piston 312, and the other end of the push rod 24 is connected to the middle of the lever 23. When the rigid rope 22 pulls the lever 23 to rotate relative to the angle locking unit 3 under the action of the power unit 1, the lever 23 pushes the push rod 24 to squeeze the main oil pump piston 312 into the main oil pump body 313.

[0044] More specifically, such as Figure 3 As shown, one end of lever 23 is rotatably connected to angle locking unit 3, and the other end of lever 23 is connected to rigid rope 22; push rod 24 is connected to the middle of lever 23; when rigid rope 22 pulls lever 23 to rotate relative to angle locking unit 3, lever 23 pushes push rod 24 to squeeze main oil pump piston 312 into main oil pump body 313.

[0045] Preferably, the angle locking unit 3 also includes a spring plate 35, and at least two friction plates 34 disposed on both sides of the brake pad 4 are connected by the spring plate 35. When the thrust oil pump piston 331 is reset, the friction plate 34 is reset under the elastic force of the spring plate 35, so that a certain gap is maintained between the friction plate 34 and the brake pad 4.

[0046] Combination Figures 1-9 The working process of the deflection angle locking device M130 of the rail grinding equipment provided by this utility model is as follows:

[0047] When the grinding system M110 of the rail grinding equipment is adjusted to the target grinding angle relative to the frame M120 of the rail grinding equipment, the motor 11 of the power unit 1 starts, and the lead screw 12 converts the rotational motion of the motor 11 into linear motion, which drives the spring 21 to pull the rigid rope 22. The rigid rope 22 pulls the lever 23, and the push rod 24 connected to the lever 23 pushes the main oil pump piston 312 to push the hydraulic oil in the pump body oil chamber. The hydraulic oil squeezes the pump body 332 of the multiple thrust oil pumps 33, and pushes the multiple thrust oil pump pistons 331 to move towards the friction plate 34 in the middle, so that the friction plates 34 on both sides clamp the brake plate 4. After the brake plate 4 is clamped, the rotating shaft 5 connected to the brake plate 4 cannot rotate, thus realizing the deflection angle locking function of the rail grinding equipment.

[0048] Once the deflection angle of the M110 grinding system of the rail grinding equipment is locked, the grinding accuracy will not decrease due to vibration during grinding.

[0049] When the grinding angle of the grinding system M110 needs to be changed, the power unit 1 reverses, the lead screw 12 is released, and the spring 21 and rigid rope 22 are relaxed. The return spring 311 in the main oil pump 31 returns the main oil pump piston 312 to its original position under the action of its elastic force. The hydraulic oil is drawn back into the oil chamber 32 of the main oil pump 31, the thrust pump piston 331 returns to its original position, and the friction plate 34 returns to its original position under the action of the spring plate 35 to release the brake plate 4 and maintain a certain gap with the brake plate 4. The brake plate 4 can rotate freely with the rotating shaft 5. When the desired grinding angle is reached, the above process is repeated to realize the deflection angle locking function again.

[0050] The above are merely preferred embodiments of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A deflection angle locking device for rail grinding equipment, characterized in that: The deflection angle locking device includes a power unit (1), a connecting unit (2), an angle locking unit (3), and a brake pad (4); the power unit (1) and the angle locking unit (3) are fixedly connected to the frame (M110) of the rail grinding equipment, the power unit (1) is connected to the angle locking unit (3) through the connecting unit (2), and the brake pad (4) is fixedly connected to the grinding device of the rail grinding equipment; when the grinding device is adjusted to the target grinding angle relative to the frame (M110), the deflection angle locking device is used to lock the deflection angle of the grinding device.

2. The deflection angle locking device of the rail grinding equipment according to claim 1, characterized in that: The angle locking unit (3) includes a main oil pump (31), a thrust oil pump (33), and friction plates (34). The main oil pump (31) includes a main oil pump piston (312) and a main oil pump body (313). The thrust oil pump (33) includes a thrust oil pump piston (331) and a thrust oil pump body (332). The pump body oil chamber (32) of the main oil pump and the pump body oil chamber (36) of the thrust oil pump are connected by an oil passage (37) and filled with hydraulic oil. At least two thrust oil pumps (33) and friction plates (34) are respectively provided, respectively opposite to both sides of the brake pad (4). When the grinding device is adjusted to the target grinding angle relative to the frame (M110), the power unit (1) applies force to the main oil pump piston (312) through the connecting unit (2), driving the hydraulic oil in the pump body oil chamber (32) of the main oil pump to enter the pump body oil chamber (36) of at least two thrust oil pumps through the connected oil passage (37), pushing at least two thrust oil pump pistons (331) to move towards each other, thereby pushing the friction plate (34) to clamp the brake plate (4) in the middle from both sides, relying on the friction between the friction plate (34) and the brake plate (4) to lock the deflection angle of the grinding device.

3. The deflection angle locking device of the rail grinding equipment according to claim 2, characterized in that: The brake pad (4) is fixedly connected to the rotating shaft (5) of the grinding device; the brake pad (4) is fan-shaped, and the center of the fan shape is on the same axis as the center of the rotating shaft (5), and the angle of the center of the fan shape is in the range of 75° to 135°.

4. The deflection angle locking device of the rail grinding equipment according to claim 3, characterized in that: The brake pad (4) has inward clearance on both sides to avoid interference between the brake pad and the rail.

5. The deflection angle locking device of the rail grinding equipment according to claim 3, characterized in that: The brake pad (4) has several holes corresponding to the position of the friction pad (34) to increase the locking friction between the brake pad (4) and the friction pad (34).

6. The deflection angle locking device of the rail grinding equipment according to claim 2, characterized in that: At least two angle locking units (3) are provided in the rotation direction of the brake pad (4).

7. The deflection angle locking device of the rail grinding equipment according to claim 2, characterized in that: The connecting unit (2) includes a spring (21), a rigid rope (22), a lever (23), and a push rod (24); the spring (21) is fixedly connected to the power unit (1), one end of the rigid rope (22) is connected to the spring (21), and the other end of the rigid rope (22) is connected to the end of the lever (23); the other end of the lever (23) is rotatably connected to the angle locking unit (3); one end of the push rod (24) is fixedly connected to the main oil pump piston (312), and the other end of the push rod (24) is connected to the middle of the lever (23); when the rigid rope (22) pulls the lever (23) to rotate relative to the angle locking unit (3) under the action of the power unit (1), the lever (23) pushes the push rod (24) to squeeze the main oil pump piston (312) into the main oil pump body (313).

8. The deflection angle locking device of the rail grinding equipment according to claim 7, characterized in that: The power unit (1) includes a motor (11) and a lead screw (12). The lead screw (12) converts the rotational motion of the motor (11) into linear motion. When the lead screw (12) contracts, it drives the spring (21) and the rigid rope (22) to pull the lever (23) to rotate relative to the angle locking unit (3).

9. The deflection angle locking device of the rail grinding equipment as described in claim 2, characterized in that: The main oil pump (31) also includes a reset spring (311); the reset spring (311) is disposed inside the pump body (313) of the main oil pump, one end of the reset spring (311) abuts against the end of the oil chamber (32) of the pump body of the main oil pump, and the other end abuts against the piston (312) of the main oil pump.

10. The deflection angle locking device of the rail grinding equipment according to claim 2, characterized in that: The angle locking unit (3) also includes a spring plate (35). At least two friction plates (34) disposed on both sides of the brake plate (4) are connected by the spring plate (35). When the thrust oil pump piston (331) is reset, the friction plate (34) is reset under the elastic force of the spring plate (35), so that a certain gap is maintained between the friction plate (34) and the brake plate (4).

Images