A driving wheel set device for an engineering vehicle

Abstract

The invention discloses a driving wheel pair device of an engineering work vehicle, comprising a wheel pair, a gear box and a reduction motor. The gear box comprises a box body and a rotating shaft rotatably connected to the inside of the box body, a rotating shaft transmission teeth are arranged on the rotating shaft, an axle of the wheelset passes through the box body of the gear box, and an axle transmission teeth is arranged on the outer peripheral surface of the axle located inside the box body, the rotating shaft transmission teeth and the axle transmission teeth mesh with each other for transmission, an external convex spline 1 is arranged on the outer peripheral surface of one end of the rotating shaft, an external convex spline 2 is arranged on the outer peripheral surface of one end of the reduction motor output shaft, the central axes of the rotating shaft and the reduction motor output shaft are arranged in a horizontal straight line, so that the rotating shaft and the reduction motor output shaft form an axis body, a linkage sleeve with a concave spline groove is sleeved on the outer peripheral surfaces of the rotating shaft and the reduction motor output shaft, and a lever mechanism is also arranged in the box body, and the lever mechanism can drive the linkage sleeve to move up and down along one end of the rotating shaft and one end of the reduction motor output shaft.

Description

Technical Field

[0001] The invention relates to a component of a railway construction locomotive, in particular to a driving wheel pair device of an engineering operation vehicle. Background Art

[0002] Since the construction of the first railway in China, my country's railway construction has a history of more than 150 years. With the rapid development of my country's railway construction, the forms of railway tracks have become increasingly diverse, and railway track laying technology has made great progress. In recent years, domestic railway technology has made great progress, and high-speed railways have been successfully opened and operated.

[0003] In order to meet the requirements of actual working conditions, the engineering vehicle should have two driving states, namely the active driving state and the towed state. This is because when the engineering vehicle is operating in a certain area, it does not need to travel at high speed, and can complete the operation requirements by only relying on the small power mechanism it carries. When the engineering vehicle needs to travel from the locomotive depot to the operating area, the distance is often quite far. At this time, the use of an automatic small power mechanism to drive does not meet the actual working conditions. At this time, a tractor should be used to tow the engineering vehicle to the operating site, so that the engineering vehicle is in a towed state.

[0004] In summary, how to design a driving wheel pair device for an engineering work vehicle so that it can switch between a driving state and a towed state, so that the engineering work vehicle can meet the requirements of actual working conditions and quickly arrive at the site for normal operations, reduce the labor intensity of workers, and improve work efficiency is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a driving wheel pair device for an engineering work vehicle in view of the defects existing in the prior art, which can be converted between a driving state and a towed state, so that the engineering work vehicle can meet the requirements of actual working conditions and quickly arrive at the site for normal operation, thereby reducing the labor intensity of workers and improving work efficiency.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows: a driving wheel pair device of an engineering work vehicle comprises a wheel pair, a gear box and a reduction motor, the gear box comprises a housing and a rotating shaft rotatably connected to the inside of the housing, a rotating shaft transmission tooth is arranged on the outer peripheral surface of the rotating shaft, the axle of the wheelset passes through the housing of the gear box and an axle transmission tooth is arranged on the outer peripheral surface of the axle located inside the housing, the rotating shaft transmission tooth and the axle transmission tooth are meshed and matched with each other for transmission, characterized in that: an external convex spline 1 is arranged on the outer peripheral surface of one end of the rotating shaft, an external convex spline 2 is arranged on the outer peripheral surface of one end of the reduction motor output shaft, the central axes of the rotating shaft and the reduction motor output shaft are arranged in a horizontal straight line, so that the rotating shaft and the reduction motor output shaft form an axis body, a linkage sleeve with an inner concave spline groove is sleeved on the outer peripheral surface of the rotating shaft and the reduction motor output shaft, and a lever mechanism is also arranged in the housing, and the lever mechanism can drive the linkage sleeve to move up and down along one end of the rotating shaft with the external convex spline 1 and one end of the reduction motor output shaft with the external convex spline 2.

[0007] Preferably, a slot is provided on the outer peripheral surface of the linkage sleeve, and the lever mechanism includes a screw rod rotatably connected to the box body and a nut sleeved on the screw rod. A lever is also provided on the nut, one end of the lever rod is fixedly connected to the nut, and the other end of the lever rod extends into the slot of the linkage sleeve.

[0008] Preferably, the slot is an annular slot, which is arranged on the outer circumference of the linkage sleeve in a full circle, and the lever is a conical lever, and the large head end of the conical lever is arranged to be a concave arc shape, and the curvature of the large head end of the arc-shaped conical lever matches the curvature of the annular slot, the small head end of the conical lever is fixedly connected to the nut, and the large head end of the arc-shaped conical lever is inserted into the annular slot.

[0009] Preferably, one end of the screw rod is exposed outside the box body, and a turntable is also provided on the end of the screw rod exposed outside the box body.

[0010] Preferably, the output shaft of the reduction motor is in the shape of a circular boss, including output shaft one and output shaft two, the diameter of output shaft one is larger than the diameter of output shaft two, and the external convex spline two is arranged on the outer circumferential surface of output shaft one; the rotating shaft is a hollow shaft, the inner diameter of the rotating shaft matches the diameter of output shaft two, and output shaft two of the reduction motor output shaft is inserted into the inner cavity of the rotating shaft, so that the rotating shaft and the reduction motor output shaft form a shaft body.

[0011] The beneficial effects of the present invention are as follows: when the engineering vehicle needs to be towed from the locomotive depot to the work site by the tractor, the present invention firstly moves the linkage sleeve to one side through the lever mechanism, even if the linkage sleeve is located on one end of the rotating shaft or one end of the output shaft of the reduction motor, so that the rotating shaft and the output shaft of the reduction motor are in a separated state. At this time, during the towing process, only the wheelset of the engineering vehicle rotates, and the output shaft of the reduction motor is immobile, thus avoiding the occurrence of the problem of damage to the reduction motor due to high-speed rotation of the towing; when the engineering vehicle arrives at the work site, the linkage sleeve is moved to the middle position again through the lever mechanism, even if the linkage sleeve is located on one end of the rotating shaft and one end of the output shaft of the reduction motor at the same time, so that the rotating shaft and the output shaft of the reduction motor are connected as one, and then, the wheelset is driven to rotate by the reduction motor, and the vehicle can walk on the work site by itself. Therefore, the present invention can be mutually converted between the driving state and the towed state, so that the engineering vehicle can meet the requirements of the actual working conditions and quickly arrive at the site for normal operation, thereby reducing the labor intensity of the workers and improving the work efficiency. By setting the lever mechanism as a screw-nut mechanism, when the linkage sleeve needs to be driven to move, the screw rod can be rotated to drive the lever to move through the nut, thereby using the lever to move the linkage sleeve. The lever is set as a tapered lever, and an inwardly concave arc shape is set at the large end of the tapered lever, so that it is easier to move the linkage sleeve. By designing the connection structure between the rotating shaft and the output shaft of the reduction motor, it can ensure that the installation is more convenient and the stability of the rotating shaft and the output shaft of the reduction motor after forming a shaft body can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0013] Figure 2 for Figure 1 The schematic diagram of the local structure after removing part of the gear box;

[0014] Figure 3 It is a schematic diagram of the axial cross-sectional structure of the output shaft of the reduction motor, the rotating shaft and the lever mechanism when they cooperate with each other in the embodiment of the present invention;

[0015] Figure 4 It is a schematic diagram of the front view of the lever mechanism in an embodiment of the present invention;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the output shaft of the reduction motor in an embodiment of the present invention;

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating shaft in an embodiment of the present invention;

[0018] Figure 7 It is a schematic diagram of the three-dimensional structure of the linkage sleeve in the embodiment of the present invention;

[0019] In the figure: 1. wheelset, 111. axle, 2. gearbox, 211. housing, 212. rotating shaft, 3. reduction motor, 311. reduction motor output shaft, 3111. output shaft 1, 3112. output shaft 2, 4. rotating shaft transmission teeth, 5. axle transmission teeth, 6. linkage sleeve, 611. slot, 612. concave spline groove, 7. lever mechanism, 711. screw rod, 712. nut, 8. lever, 9. turntable, 10. external convex spline 2, 11. external convex spline 1. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Example: Figures 1 to 3 as well as Figures 5 to 7As shown, a driving wheel set device of an engineering work vehicle includes a wheel set 1, a gear box 2 and a reduction motor 3. The gear box 2 includes a box body 211 and a rotating shaft 212 rotatably connected to the inside of the box body 211. A rotating shaft transmission tooth 4 is arranged on the outer circumference of the rotating shaft 212. The axle 111 of the wheel set 1 passes through the box body 211 of the gear box and an axle transmission tooth 5 is arranged on the outer circumference of the axle 111 located inside the box body 211. The rotating shaft transmission tooth 4 and the axle transmission tooth 5 are meshed and matched with each other for transmission. An outer convex spline 11 is arranged on the outer circumference of one end of the rotating shaft 212, and a gear 11 is arranged on the outer circumference of one end of the reduction motor output shaft 311. An external convex spline 10 is provided, and the central axes of the rotating shaft 212 and the output shaft 311 of the reduction motor are arranged in a horizontal straight line, so that the rotating shaft 212 and the output shaft 311 of the reduction motor form an axis body, and a linkage sleeve 6 with a concave spline groove 612 is sleeved on the outer circumference of the rotating shaft 212 and the output shaft 311 of the reduction motor, and the concave spline groove and the external convex spline 1 and the external convex spline 2 are matched with each other. A lever mechanism 7 is also provided in the box body 211, and the lever mechanism 7 can drive the linkage sleeve 6 to move up and down along one end of the rotating shaft 212 with the external convex spline 1 and one end of the output shaft 311 of the reduction motor with the external convex spline 2. When the engineering work vehicle needs to be towed from the locomotive depot to the work site by the tractor, the linkage sleeve is first moved to one side through the lever mechanism 7, even if the linkage sleeve 6 is located on one end of the rotating shaft 212 or on one end of the output shaft 311 of the reduction motor, so that the rotating shaft 212 and the output shaft 311 of the reduction motor are in a separated state. At this time, during the towing process, only the wheelset of the engineering work vehicle rotates, and the output shaft of the reduction motor is stationary, thus avoiding the occurrence of damage to the reduction motor due to high-speed rotation of the reduction motor due to towing; when the engineering work vehicle arrives at the work site, the linkage sleeve is moved to the middle position through the lever mechanism 7 again, even if the linkage sleeve 6 is located on one end of the rotating shaft 212 and one end of the output shaft 311 of the reduction motor at the same time, so that the rotating shaft 212 and the output shaft 311 of the reduction motor are connected as one, and then the wheelset is driven to rotate by the reduction motor, and the vehicle can walk on the work site by itself. Therefore, this embodiment can switch between the driving state and the towed state, so that the engineering work vehicle can meet the requirements of actual working conditions and quickly arrive at the site for normal operation, thereby reducing the labor intensity of workers and improving work efficiency.

[0022] like Figure 3 and Figure 4As shown, a slot 611 is formed on the outer circumference of the linkage sleeve 6, and the lever mechanism 7 includes a screw rod 711 rotatably connected to the housing and a nut 712 sleeved on the screw rod 711. A lever 8 is also provided on the nut 712, one end of the lever 8 is fixedly connected to the nut 712, and the other end of the lever 8 extends into the slot 611 of the linkage sleeve. When the linkage sleeve needs to be driven to move, the screw rod is rotated to drive the lever to move through the nut, so that the linkage sleeve is driven to move by the lever.

[0023] The clamping groove 611 is an annular clamping groove, which is arranged on the outer circumference of the linkage sleeve 6 in a full circle. The lever 8 is a conical lever, and the large end of the conical lever 8 is arranged to be an inwardly concave arc shape, and the curvature of the large end of the arc-shaped conical lever 8 matches the curvature of the annular clamping groove 611. The small end of the conical lever 8 is welded to the nut 712, and the large end of the arc-shaped conical lever 8 is clamped into the annular clamping groove 611. In this way, it is more convenient to move the linkage sleeve.

[0024] One end of the screw rod 711 is exposed outside the box body, and a turntable 9 is also arranged on the end of the screw rod 711 exposed outside the box body.

[0025] like Figure 3 and Figures 5 to 7 As shown, the output shaft 311 of the reduction motor is in the shape of a circular boss, including an output shaft 1 3111 and an output shaft 2 3112. The diameter of the output shaft 1 3111 is larger than the diameter of the output shaft 2 3112, and the external convex spline 2 10 is arranged on the outer peripheral surface of the output shaft 1 3111; the rotating shaft 212 is a hollow shaft, and the inner diameter of the rotating shaft 212 matches the diameter of the output shaft 2 3112. The output shaft 2 3112 of the reduction motor output shaft is inserted into the inner cavity of the rotating shaft 212, so that the rotating shaft 212 and the reduction motor output shaft 311 form a shaft body. The above structure can ensure that the installation is more convenient and the stability of the rotating shaft and the reduction motor output shaft after forming a shaft body can be ensured.

[0026] In summary, when the engineering vehicle needs to be towed from the locomotive depot to the work site by the tractor, the present invention first moves the linkage sleeve to one side through the lever mechanism, even if the linkage sleeve is located on one end of the rotating shaft or one end of the output shaft of the reduction motor, so that the rotating shaft and the output shaft of the reduction motor are in a separated state. At this time, during the towing process, only the wheelset of the engineering vehicle rotates, and the output shaft of the reduction motor is stationary, thus avoiding the occurrence of damage to the reduction motor due to high-speed rotation of the reduction motor due to towing; when the engineering vehicle arrives at the work site, the linkage sleeve is moved to the middle position again through the lever mechanism, even if the linkage sleeve is located on one end of the rotating shaft and one end of the output shaft of the reduction motor at the same time, so that the rotating shaft and the output shaft of the reduction motor are connected as one, and then, the wheelset is driven to rotate by the reduction motor, and the vehicle can walk on the work site by itself. Therefore, the present invention can switch between the driving state and the towed state, so that the engineering vehicle can meet the requirements of the actual working conditions and quickly arrive at the site for normal operation, reducing the labor intensity of the workers and improving the work efficiency. By setting the lever mechanism as a screw-nut mechanism, when the linkage sleeve needs to be driven to move, the screw rod can be rotated to drive the lever to move through the nut, thereby using the lever to move the linkage sleeve. The lever is set as a tapered lever, and an inwardly concave arc shape is set at the large end of the tapered lever, so that it is easier to move the linkage sleeve. By designing the connection structure between the rotating shaft and the output shaft of the reduction motor, it can ensure that the installation is more convenient and the stability of the rotating shaft and the output shaft of the reduction motor after forming a shaft body can be ensured.

[0027] The "multiple" mentioned in the above embodiments refers to the number of "two or more". The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those skilled in the relevant technical field can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. A driving wheel set device for an engineering vehicle, comprising a wheel set, a gear box and a reduction motor, wherein the gear box comprises a housing and a rotating shaft rotatably connected to the housing, wherein a rotating shaft transmission tooth is arranged on the outer peripheral surface of the rotating shaft, and an axle transmission tooth is arranged on the outer peripheral surface of the axle located inside the housing, wherein the rotating shaft transmission tooth and the axle transmission tooth are meshed and matched with each other for transmission, and wherein: An external convex spline 1 is arranged on the outer circumferential surface of one end of the rotating shaft, and an external convex spline 2 is arranged on the outer circumferential surface of one end of the output shaft of the reduction motor. The central axes of the rotating shaft and the output shaft of the reduction motor are arranged in a horizontal straight line, so that the rotating shaft and the output shaft of the reduction motor form a shaft body, and a linkage sleeve with an inner concave spline groove is sleeved on the outer circumferential surface of the rotating shaft and the output shaft of the reduction motor. A lever mechanism is also arranged in the box body, and the lever mechanism can drive the linkage sleeve to move up and down along one end of the rotating shaft with the external convex spline 1 and one end of the output shaft of the reduction motor with the external convex spline 2; The output shaft of the reduction motor is in the shape of a circular boss, and includes an output shaft 1 and an output shaft 2. The diameter of the output shaft 1 is larger than the diameter of the output shaft 2, and the external convex spline 2 is arranged on the outer peripheral surface of the output shaft 1; the rotating shaft is a hollow shaft, and the inner diameter of the rotating shaft matches the diameter of the output shaft 2. The output shaft 2 of the reduction motor output shaft is inserted into the inner cavity of the rotating shaft, so that the rotating shaft and the reduction motor output shaft form a shaft body; A slot is formed on the outer circumferential surface of the linkage sleeve, and the lever mechanism comprises a screw rod rotatably connected to the housing and a nut sleeved on the screw rod. A lever is also provided on the nut, one end of the lever rod is fixedly connected to the nut, and the other end of the lever rod extends into the slot of the linkage sleeve; The slot is an annular slot, which is arranged on the outer circumference of the linkage sleeve in a full circle. The lever is a conical lever, and the large end of the conical lever is arranged to be an inwardly concave arc shape. The curvature of the large end of the arc-shaped conical lever matches the curvature of the annular slot. The small end of the conical lever is fixedly connected to the nut, and the large end of the arc-shaped conical lever is inserted into the annular slot.

2. The driving wheel pair device of the construction vehicle according to claim 1, characterized in that: One end of the screw rod is exposed outside the box body, and a rotating disk is also arranged on the end of the screw rod exposed outside the box body.

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