Assembly line for rear half axle of tractor

Abstract

The utility model discloses a tractor rear half shaft assembly line, which relates to the technical field of tractor assembly equipment, and comprises a transmission line, a plurality of horizontal fixed tables are arranged on the transmission line at equal intervals, a turntable is arranged on each fixed table, and a clamping component is arranged on each turntable; the device further comprises a first hydraulic cylinder, a guide rail, a movable plate, a pressure spring and a plurality of extrusion tools, and the first hydraulic cylinder is fixedly erected on one side of the transmission line and is perpendicular to the transmission line; the guide rail fixing frame is arranged between the first hydraulic cylinder and the transmission line, and the movable plate is slidably installed in the guide rail and connected with a reciprocating driving mechanism. The plurality of extrusion tools are arranged on the movable plate at equal intervals, and are positioned on the same horizontal plane with the first hydraulic cylinder; the extrusion tool is tubular and penetrates through the moving plate in a sliding manner, and an end plate is arranged at the rear end of the extrusion tool; the compression spring sleeves the extrusion tool, and two ends of the compression spring are respectively supported on the back of the movable plate and the end plate; the device is matched with manual work to achieve semi-automatic assembly of the rear half shaft, and the assembly efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor assembly equipment, in particular to an assembly line for a tractor rear half shaft. Background Art

[0002] The existing tractor rear half shaft assembly method is manual assembly, which has low assembly efficiency and high labor intensity. In addition, the manual assembly of bearings mostly adopts a knocking method, which does not meet the assembly specifications and is easy to damage the bearings and the half shaft housing.

[0003] Therefore, it is urgent to develop a tractor rear axle assembly line with a high degree of automation. Utility Model Content

[0004] The utility model aims to provide a tractor rear half shaft assembly line in view of the defects in the prior art.

[0005] The technical scheme of the utility model is: a tractor rear half-axle assembly line, including a transmission line, wherein a plurality of horizontal fixed platforms are arranged at equal intervals on the transmission line, a turntable connected to a driving motor is provided on the fixed platform, a clamping assembly is provided on the turntable, and the clamping assembly includes a lead screw, a first motor and two sliders, a radial slide groove is provided on the top of the turntable, and the thread directions of the two ends of the lead screw are opposite, and the lead screw is mounted in the slide groove and arranged in parallel with the slide groove; the first motor is fixed on the turntable, and the output end thereof is connected to the lead screw for transmission; the two sliders are respectively connected to the two ends of the lead screw by threads, and the two sliders are symmetrically arranged and both are slidably installed in the slide groove; the two sliders are provided with vertical clamping plates;

[0006] It also includes a first hydraulic cylinder, a guide rail, a movable plate, a compression spring and a plurality of extrusion tools. The first hydraulic cylinder is fixedly mounted on one side of the transmission line and is arranged perpendicular to the transmission line; the guide rail is fixedly mounted between the first hydraulic cylinder and the transmission line and is arranged parallel to the transmission line; the movable plate is arranged vertically, is slidably installed in the guide rail, and is connected to a reciprocating drive mechanism; a plurality of the extrusion tools are arranged on the movable plate at equal intervals and are on the same horizontal plane as the first hydraulic cylinder; the extrusion tool is in the shape of a tubular column, which slides through the movable plate, and an end plate is provided at its rear end; the compression spring is sleeved on the extrusion tool, and its two ends are respectively supported on the back of the movable plate and the end plate; when the hydraulic rod of the first hydraulic cylinder is not extended, its front end does not contact the extrusion tool.

[0007] Preferably, it further comprises a second hydraulic cylinder arranged opposite to the first hydraulic cylinder, wherein the second hydraulic cylinder is fixedly mounted on the other side of the transmission line, and a vertical support plate is provided at the output end thereof.

[0008] Preferably, the reciprocating drive mechanism includes a second motor, a gear and a rack, the second motor is fixedly mounted below the guide rail, the gear is meshed and connected with the rack, the gear is fixed on the output shaft of the second motor, and the rack is fixed at the bottom of the movable plate.

[0009] Preferably, a guide limiting sleeve for limiting the forward movement distance of the extrusion tool is provided on the back of the movable plate, the compression spring is located on the outside of the guide limiting sleeve, and the extrusion tool is slidably installed in the guide limiting sleeve.

[0010] Preferably, the extrusion tool is divided into two types, including a cylinder and a tube; the front end of the cylinder is provided with a circular pressure plate with an outer diameter slightly smaller than the outer diameter of the bearing, the outer diameter of the circular pressure plate is larger than the outer diameter of the cylinder, and a sleeve rod adapted to the inner diameter of the bearing is provided at the front center; the front end of the tube is provided with a pressure ring with an outer diameter slightly smaller than the outer diameter of the bearing, the outer diameter of the pressure ring is larger than the outer diameter of the tube body, and its inner diameter is equal to the inner diameter of the tube body and slightly larger than the inner diameter of the bearing.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] This device can realize semi-automatic assembly of the rear half shaft of the tractor in cooperation with manual labor, effectively improving the assembly efficiency and greatly reducing the labor intensity of workers; the bearing assembly method of this device is hydraulic press assembly, which complies with the assembly specifications and reduces the discard rate of the bearing and the half shaft housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the fixing table and the clamping assembly;

[0015] Figure 3 It is a three-dimensional diagram of the utility model from another angle.

[0016] In the figure: 1, transmission line, 2, fixed table, 3, turntable, 301, slide, 4, first motor, 5, screw, 6, slider, 7, clamping plate, 8, first hydraulic cylinder, 9, guide rail, 10, movable plate, 11, second motor, 12, gear, 13, extrusion tool, 1301, column, 1302, tube body, 14, end plate, 15, compression spring, 16, guide limit sleeve, 17, second hydraulic cylinder, 18, support plate, 19, half-axle housing, 20, circular pressure plate, 21, sleeve rod, 22, pressure ring. DETAILED DESCRIPTION

[0017] The utility model is further described below with reference to the accompanying drawings and embodiments. Embodiment 1

[0018] Reference Figure 1-3As shown, a tractor rear half-axle assembly line includes a transmission line 1, on which a number of horizontal fixed platforms 2 are arranged at equal intervals, a turntable 3 connected to a driving motor is provided on the fixed platform 2, a clamping assembly is provided on the turntable 3, and the clamping assembly includes a lead screw 5, a first motor 4 and two sliders 6, a radial slide groove 301 is opened on the top of the turntable 3, and the thread directions of the two ends of the lead screw 5 are opposite, and the lead screw 5 is mounted in the slide groove 301 and arranged parallel to the slide groove 301; the first motor 4 is fixed on the turntable 3, and the output end thereof is transmission-connected to the lead screw 5; the two sliders 6 are respectively threadedly connected to the two ends of the lead screw 5, and the two are symmetrically arranged and both are slidably installed in the slide groove 301; and vertical clamping plates 7 are provided on the two sliders 6.

[0019] It also includes a first hydraulic cylinder 8, a guide rail 9, a movable plate 10, a compression spring 15 and three extrusion tools 13. The first hydraulic cylinder 8 is fixedly mounted on one side of the transmission line 1 and is vertically arranged with the transmission line 1; the guide rail 9 is fixedly mounted between the first hydraulic cylinder 8 and the transmission line 1 and is parallel to the transmission line 1; the movable plate 10 is vertically arranged, slidably installed in the guide rail 9, and is connected with a reciprocating drive mechanism; the three extrusion tools 13 are arranged on the movable plate 10 at equal intervals and are on the same horizontal plane as the first hydraulic cylinder 8; the extrusion tool 13 is in the shape of a tubular column, which slides through the movable plate 10, and an end plate 14 is provided at its rear end; the compression spring 15 is sleeved on the extrusion tool 13, and its two ends are respectively supported on the back of the movable plate 10 and the end plate 14; when the hydraulic rod of the first hydraulic cylinder 8 is not extended, its front end does not contact the extrusion tool 13.

[0020] It also includes a second hydraulic cylinder 17 arranged opposite to the first hydraulic cylinder 8. The second hydraulic cylinder 17 is fixedly mounted on the other side of the transmission line 1, and a vertical support plate 18 is provided at the output end thereof.

[0021] In more detail, the extrusion tool 13 is divided into two types, including a column 1301 and a tube 1302; a circular pressure plate 20 with an outer diameter slightly smaller than the outer diameter of the bearing is provided at the front end of the column 1301, and the outer diameter of the circular pressure plate 20 is larger than the outer diameter of the column 1301, and a sleeve rod 21 adapted to the inner diameter of the bearing is provided at the front center thereof; a pressure ring 22 with an outer diameter slightly smaller than the outer diameter of the bearing is provided at the front end of the tube 1302, and the outer diameter of the pressure ring 22 is larger than the outer diameter of the tube 1302, and its inner diameter is equal to the inner diameter of the tube 1302 and slightly larger than the inner diameter of the bearing.

[0022] like Figure 1 As shown, in this embodiment, the three extrusion tools 13 are respectively a first extrusion tool 13 , a second extrusion tool 13 and a third extrusion tool 13 from left to right, wherein the first extrusion tool 13 and the second extrusion tool 13 are cylinders 1301 , and the third extrusion tool 13 is a tube 1302 .

[0023] When in use, first clamp the half-axle housing 19 to be assembled on the fixed platform 2 on the transmission line 1 in sequence: place the half-axle housing 19 on the turntable 3, start the first motor 4 to drive the screw 5 to rotate, and the two clamping plates 7 move relatively under the drive of the screw 5, thereby clamping the half-axle housing 19; the transmission line 1 transports the half-axle housing 19 backward, and when the half-axle housing 19 to be assembled is facing the first hydraulic cylinder 8, the transmission line 1 stops running, at this time the moving plate 10 is in the initial position, and the first extrusion tool 13 and the first hydraulic cylinder 8 are in the same straight line; start the second hydraulic cylinder 17, and its hydraulic rod extends to drive the support plate 18 to approach the half-axle housing 19 until the support plate 18 contacts the rear end of the half-axle housing 19; then put the bearing on the sleeve rod 21 of the first extrusion tool 13, start the first hydraulic cylinder 8, and its hydraulic rod extends and pushes the first extrusion tool 13 forward until the bearing is pressed into place; then the first hydraulic cylinder 8 is reset, and under the action of the compression spring 15, the first extrusion tool 13 is also automatically reset.

[0024] When other extrusion tools 13 are needed, the extrusion tools 13 can be switched by driving the movable plate 10 to move through the reciprocating drive mechanism; after the front side of the half-axle housing 19 is assembled, the turntable 3 is started to drive the half-axle housing 19 to rotate 180°, so that the rear side of the half-axle housing 19 can be assembled.

[0025] Finally, the transmission shaft is inserted into the half-shaft housing 19. A bearing to be pressed is also sleeved on the transmission shaft. At this time, the third extrusion tool 13 is used to press it into place, and the assembly is completed.

[0026] The device can realize semi-automatic assembly of the rear half shaft of the tractor in cooperation with manual labor, effectively improving the assembly efficiency and greatly reducing the labor intensity of workers; the device assembles the bearing by hydraulic pressing, which complies with the assembly specifications and reduces the discard rate of the bearing and the half shaft housing 19. Embodiment 2

[0027] As a preferred embodiment of the present utility model, this embodiment designs the reciprocating drive mechanism based on the first embodiment, specifically:

[0028] In this embodiment, the reciprocating drive mechanism includes a second motor 11, a gear 12 and a rack. The second motor 11 is fixedly mounted below the guide rail 9, the gear 12 is meshed with the rack, the gear 12 is fixed on the output shaft of the second motor 11, and the rack is fixed at the bottom of the moving plate 10.

[0029] When in use, the second motor 11 is started, and the gear 12 rotates to drive the moving plate 10 to move along the guide rail 9 . Embodiment 3

[0030] As a preferred embodiment of the present utility model, this embodiment is additionally provided with a guide limit sleeve 16 on the basis of the first embodiment, specifically:

[0031] A guide limiting sleeve 16 for limiting the forward moving distance of the extrusion tool 13 is provided on the back of the movable plate 10 . The compression spring 15 is located outside the guide limiting sleeve 16 , and the extrusion tool 13 is slidably installed in the guide limiting sleeve 16 .

[0032] The guide limiting sleeve 16 can provide a guide for the sliding of the extrusion tool 13 and prevent the compression spring 15 from being over-compressed, thereby protecting the compression spring 15 .

[0033] The present invention is not limited to the above-mentioned implementation modes. Within the knowledge scope of those skilled in the art, various changes can be made without departing from the purpose of the present invention. The changed contents still belong to the protection scope of the present invention.

Claims

1. A tractor rear half shaft assembly line, characterized by: It comprises a transmission line, on which a number of horizontal fixed tables are arranged at equal intervals, a turntable connected to a driving motor is provided on the fixed table, a clamping assembly is provided on the turntable, and the clamping assembly comprises a lead screw, a first motor and two sliders, a radial slide groove is provided on the top of the turntable, and the threads at both ends of the lead screw are in opposite directions, and the lead screw is mounted in the slide groove and arranged in parallel with the slide groove; the first motor is fixed on the turntable, and the output end thereof is connected to the lead screw for transmission; the two sliders are respectively connected to the two ends of the lead screw by threads, and the two are symmetrically arranged and both are slidably installed in the slide groove; and vertical clamping plates are provided on the two sliders; It also includes a first hydraulic cylinder, a guide rail, a movable plate, a compression spring and a plurality of extrusion tools. The first hydraulic cylinder is fixedly mounted on one side of the transmission line and is arranged perpendicular to the transmission line; the guide rail is fixedly mounted between the first hydraulic cylinder and the transmission line and is arranged parallel to the transmission line; the movable plate is arranged vertically, is slidably installed in the guide rail, and is connected to a reciprocating drive mechanism; a plurality of the extrusion tools are arranged on the movable plate at equal intervals and are on the same horizontal plane as the first hydraulic cylinder; the extrusion tool is in the shape of a tubular column, which slides through the movable plate, and an end plate is provided at its rear end; the compression spring is sleeved on the extrusion tool, and its two ends are respectively supported on the back of the movable plate and the end plate; when the hydraulic rod of the first hydraulic cylinder is not extended, its front end does not contact the extrusion tool.

2. A tractor rear half shaft assembly line according to claim 1, characterized in that: It also includes a second hydraulic cylinder arranged opposite to the first hydraulic cylinder. The second hydraulic cylinder is fixedly mounted on the other side of the transmission line, and a vertical support plate is provided at the output end of the second hydraulic cylinder.

3. A tractor rear half shaft assembly line according to claim 1, characterized in that: The reciprocating drive mechanism includes a second motor, a gear and a rack. The second motor is fixedly mounted below the guide rail. The gear is meshed with the rack. The gear is fixed on the output shaft of the second motor. The rack is fixed at the bottom of the moving plate.

4. A tractor rear half shaft assembly line according to claim 1, characterized in that: A guide limiting sleeve for limiting the forward moving distance of the extrusion tool is arranged at the back of the movable plate, the compression spring is located at the outside of the guide limiting sleeve, and the extrusion tool is slidably installed in the guide limiting sleeve.

5. The tractor rear half shaft assembly line according to claim 1, characterized in that: The extrusion tool is divided into two types, including a cylinder and a tube; the front end of the cylinder is provided with a circular pressure plate with an outer diameter slightly smaller than the outer diameter of the bearing, the outer diameter of the circular pressure plate is larger than the outer diameter of the cylinder, and a sleeve rod adapted to the inner diameter of the bearing is provided at the front center; the front end of the tube is provided with a pressure ring with an outer diameter slightly smaller than the outer diameter of the bearing, the outer diameter of the pressure ring is larger than the outer diameter of the tube body, and its inner diameter is equal to the inner diameter of the tube body and slightly larger than the inner diameter of the bearing.

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