CN115476301A - Rotary arm axle box auxiliary positioning device - Google Patents

Abstract

Jib axle box auxiliary positioning device belongs to city railway train jib axle box assembly auxiliary device field, and the device includes base, four connecting rods, hand lead screw, unthreaded hole sleeve double-hinged seat, screw double-hinged seat, crossbeam, two vertical bracing pieces, door font clamp plate mechanism and positioning platform. The invention can accurately position a vertical shock absorber mounting seat at any given horizontal height, and prevent the jib type axle box from tilting, deflecting and shaking or rotating from the axle when subsequently fastening bolts, thereby avoiding torque moment when a torque wrench correctly measures the bolts, avoiding false sound and false alarm, further improving the operation precision of the bolt assembly process, reducing errors and rework rate, and ensuring the operation quality and the workpiece safety. When the auxiliary positioning device for the rotating arm type axle box positions the rotating arm type axle box and performs assembly operation, only one operator is needed to easily and independently complete all operations, so that the production efficiency can be improved, the manpower resource is saved, and the production cost can be effectively reduced.

Description

Rotary arm axle box auxiliary positioning device

technical field

The invention belongs to the field of auxiliary devices for assembling a rotary arm type axle box of urban railway trains, and in particular relates to an auxiliary positioning device for a rotary arm type axle box.

Background technique

As shown in Figure 1, a certain type of urban railway train bogie uses a pivoting arm axle box 1, and its pivoting arm 1-5 and a series of vertical shock absorber mounting seats 1-4 are fixedly connected to the axle box radially and symmetrically respectively. On both sides of the housing 1-1, the axle box rear end cover 1-2 needs to be fastened to the axial rear end of the axle box housing 1- with three bolts 1-3. In order to prevent impurities or scratches from entering the axlebox shell, the axlebox shell 1-1 is not allowed to be placed on the horizontal ground in a lying posture, so it can only be placed in an axially horizontal attitude of the axlebox shell.

The installation method of the existing axle box rear end cover 1-2 requires the cooperation of two operators, one of whom fixes the axle box by hand to prevent it from shaking and overturning, so as to protect the workpiece from being overturned and bruised and avoiding personnel from being injured. Use an intelligent torque wrench to tighten the three bolts 1-3 respectively. However, since the axlebox shell 1-1 is approximately lantern-shaped or cylindrical, the contact surface between its bottom and the horizontal ground is very small, so that the axlebox shell on the ground is placed in an axially horizontal posture of the axlebox cylinder. Body 1-1 is prone to self-axis rotation or deflection shaking when the bolt tightening torque is applied, resulting in errors in the tightening torque of bolts 1-3, and only torque wrenches are prone to false noises and false alarms, which in turn induces insufficient bolt tightening force , easy to fall off safety hazards, unable to meet the predetermined requirements of quality control, and the simultaneous operation of two operators is not only labor-intensive, low production efficiency, but also a waste of human resources, which is not conducive to the reduction of production costs.

Contents of the invention

In order to solve the problem that when using a torque wrench to install the bolts of the rear end cover of the axle box into the side opening of the axle box shell, the axle box shell with a small contact area with the ground is prone to self-axis rotation or deflection shaking, thus causing the torque wrench to easily produce False noises and false alarms lead to errors in the tightening torque of the bolts, which in turn induces safety hazards such as insufficient bolt tightening force and easy fall-off, which cannot meet the predetermined requirements of quality control, and cannot guarantee the quality of installation and operation safety; and two operators The operation method of cooperating with the operator not only has high labor intensity and low production efficiency, but also wastes human resources and is not conducive to the technical problem of reducing production costs. The invention provides a pivoting arm type axle box auxiliary positioning device.

The technical solution adopted by the present invention to solve the technical problems is as follows:

A rotary arm type axle box auxiliary positioning device, the device includes a base, four connecting rods, a hand screw, a light hole sleeve double hinge seat, a screw nut double hinge seat, a beam, two vertical support rods, The door-shaped platen mechanism and positioning platform, the four connecting rods, the hand screw, the double hinge seat of the light hole sleeve and the double hinge seat of the screw nut together form a diamond-shaped scissor lift mechanism; the center of the base is equipped with The base biaxial seat, the lower end of the middle section of the beam is equipped with a beam biaxial seat, and the two ends of the beam are symmetrically provided with vertical threaded through holes; the base biaxial seat and the beam biaxial seat are respectively connected with the scissor lift The top and bottom of the mechanism are rotatably connected; the positioning platform and the door-shaped platen mechanism are fixedly connected to the upper end surface of the middle section of the beam;

Two axially parallel base rotating shafts are arranged inside the base biaxial seat, and two axially parallel beam rotating shafts are arranged inside the beam biaxial seat, and the base rotating shaft and the cross beam rotating shaft are parallel to each other; the connecting rod The two ends of the sleeve are respectively provided with shaft seat holes and hinge shaft holes parallel to each other; the main body of the double hinge seat of the light hole sleeve is a sleeve with a smooth inner diameter, and symmetrically arranged left and right on the same diameter of the outer diameter side wall of the sleeve. Two sleeve pins; the main body of the nut double hinge seat is an internal thread nut, and two nut pins are symmetrically arranged on the same diameter of the outer diameter side wall of the nut; each base shaft and Each beam rotating shaft is respectively rotatably connected with one-to-one corresponding shaft seat holes; each sleeve pin and each nut pin is respectively rotatably connected with one-to-one corresponding hinge holes.

The hand-operated lead screw includes a screw rod and a rocker handle coaxially connected to one end thereof; the other end of the screw rod passes through the light hole of the sleeve, and is threadedly connected with a screw nut to form a screw rod mechanism.

The door-shaped platen mechanism includes two screw columns, two pressure drop nuts and a pressure plate, the two screw columns are vertically fixed to the upper end surface of the beam and symmetrically arranged on the left and right sides of the positioning platform; one end of the pressure plate is provided with a pressure plate light hole, and the other end is provided with a lateral gap; the distance between the light hole of the pressure plate and the lateral gap is exactly equal to the wheelbase of the two screw columns; the light hole of the pressure plate is coaxially nested and connected to a screw column; each pressure drop nut It is threadedly connected with a screw column one by one, and is located above the pressure plate.

The four connecting rods in the scissor lift mechanism together form a square or rhombus; the length of the screw rod is greater than the sum of the lengths of its two connecting rods; the height of the vertical support rod is the same as the length of the screw rod.

The beneficial effects of the present invention are: the pivoting arm type axle box auxiliary positioning device, which is fixedly connected to the door-shaped pressing plate mechanism and the positioning platform at the middle of the upper end of the beam, can clamp a series of vertical shock absorber mounting seats to the inner door through the pressing plate In the glyph platen mechanism. The main body of the double-hinge seat of the light-hole sleeve in the scissor-type lifting mechanism is a sleeve with a smooth inner diameter, and two sleeve pins are arranged symmetrically on the same diameter of the outer diameter side wall of the sleeve; The main body of the hinge seat is an internal thread nut, and two nut pins are symmetrically arranged on the same diameter of the outer diameter side wall of the nut; each base shaft and each beam shaft are in one-to-one correspondence. The shaft seat holes are rotatably connected; each sleeve pin and each nut pin are respectively rotatably connected to one-to-one corresponding hinge holes. The other end of the screw rod passes through the light hole of the sleeve, and is threadedly connected with the screw nut to form a screw rod mechanism. The four connecting rods together form a rhombus structure, and the sleeve and the internal thread nut on the shaft connected to the screw rod are just located on the horizontal diagonal of the rhombus structure, thus forming a scissors type driven by the hand screw. The lifting mechanism is also used to lift the beam. This structure can accurately locate a series of vertical shock absorber mounting seats at any given horizontal height, and prevent any roll, deflection, shaking or self-axis rotation of the pivot arm axle box when the bolts are subsequently tightened, thereby Prevent the torque wrench from correctly measuring the torque when the bolt is tightened, and eliminate false noises and false alarms, thereby improving the operation accuracy of the bolt assembly process, reducing errors and rework rates, and ensuring operation quality and workpiece safety. When the pivoting arm axle box auxiliary positioning device locates the pivot arm axle box and performs assembly operations, only one operator can easily complete all operations independently, which not only improves production efficiency, but also saves human resources and can effectively reduce Cost of production.

In addition, the pivoting arm type axle box auxiliary positioning device also has the advantages of simple and practical structure, convenient operation, low cost, and easy popularization.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of a certain type of urban railway train bogie with a pivoting arm type axle box;

Fig. 2 is a three-dimensional structural schematic diagram of the pivoting arm type axle box auxiliary positioning device of the present invention;

Fig. 3 is the front view of the pivoting arm type axle box auxiliary positioning device of the present invention;

Fig. 4 is a schematic diagram of the application state of the pivoting arm type axle box auxiliary positioning device of the present invention;

Fig. 5 is a three-dimensional structural schematic view of the hand screw of the present invention;

Fig. 6 is a schematic diagram of the three-dimensional structure of the double-hinge seat of the optical hole sleeve of the present invention;

Fig. 7 is a three-dimensional structural schematic diagram of the double-hinged seat of the screw nut of the present invention.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 2 to 7, the pivoting arm type axle box auxiliary positioning device of the present invention includes a base 2, four connecting rods 3, a hand screw 4, a light hole sleeve double hinge seat 5, a screw nut double hinge Seat 6, beam 7, two vertical support rods 8, door-shaped platen mechanism 9 and positioning platform 10, described four connecting rods 3, hand screw 4, light hole sleeve double hinge seat 5 and screw nut double hinge The hinge base 6 together constitutes a diamond-shaped scissor-type lifting mechanism; the center of the base 2 is provided with a base biaxial seat 2-1, and the lower end of the middle section of the crossbeam 7 is provided with a crossbeam biaxial seat 7-1, and the two ends of the crossbeam 7 Left and right are symmetrically provided with vertical threaded through-hole 7-2; Base biaxial seat 2-1 and crossbeam biaxial seat 7-1 are respectively connected with the top and bottom of the scissor lift mechanism in rotation; positioning platform 10 and The door-shaped platen mechanism 9 is fixedly connected to the upper end surface of the middle section of the beam 7; the two vertical support rods 8 are threadedly connected with the corresponding vertical threaded through holes 7-2 respectively.

The inside of the base biaxial seat 2-1 is provided with two axially parallel base shafts, and the interior of the beam biaxial seat 7-1 is provided with two axially parallel beam shafts, and the base shaft and the beam shaft are mutually parallel; the two ends of the connecting rod 3 are respectively provided with shaft seat holes 3-1 and hinge shaft holes 3-2 parallel to each other; the main body of the light hole sleeve double hinge seat 5 is a sleeve 5-1 with a smooth inner diameter. Two sleeve pins 5-2 are symmetrically arranged on the same diameter of the outer diameter side wall of the sleeve; the main body of the nut double hinge seat 6 is an internal thread nut 6-1, Two nut pin shafts 6-2 are symmetrically arranged on the same diameter; each base shaft and each crossbeam shaft are respectively connected with one-to-one corresponding shaft seat holes 3-1; each sleeve pin The shaft 5-2 and each nut pin shaft 6-2 are rotatably connected with the corresponding hinge holes 3-2 respectively.

The hand screw 4 includes a screw rod 4-1 and a rocker handle 4-2 coaxially connected to one end thereof; the other end of the screw rod 4-1 passes through the light hole of the sleeve 5-1, and is connected with the screw nut 6- 1 threaded connection to form a screw mechanism.

The door-shaped pressure plate mechanism 9 includes two screw columns 9-1, two pressure drop nuts 9-2 and a pressure plate 9-3, and the two screw columns 9-1 are vertically fixed to the upper end surface of the beam 7 and symmetrically arranged on the positioning platform The left and right sides of 10; one end of the pressure plate 9-3 is provided with a light hole for the pressure plate, and the other end is provided with a lateral gap 9-3-1; the distance between the light hole of the pressure plate and the lateral gap 9-3-1 is exactly equal to two screw rods The wheelbase of the column 9-1; the light hole of the pressure plate is coaxially nested and connected with a screw column 9-1; each pressure drop nut 9-2 is threaded with a screw column 9-1 one by one, and is located at The top of pressing plate 9-3.

A square or rhombus is formed by four connecting rods 3 in the scissor lift mechanism; the length of the screw mandrel 4-1 is greater than the sum of the lengths of its two connecting rods 3; the height of the vertical support rod 8 is the same as that of the screw rod 4-1 are the same length.

When specifically citing the pivoting arm type axle box auxiliary positioning device of the present invention, as shown in Figure 2, at first the pivoting arm type axle box 1 is placed stably with the axially horizontal attitude of the axle box cylinder, and the auxiliary positioning device of the present invention Placed under a series of vertical shock absorber mounts 1-4. Then rotate the vertical support rod 8 to make it elongate upward along the vertical threaded through hole 7-2. Thereafter, the rocker arm handle 4-2 drives the screw rod 4-1 to rotate from the axis, and drives the screw nut 6-1 to move closer to the double hinge seat 5 of the optical hole sleeve in the axial direction, so that the scissors in the scissor lift mechanism The rhombus formed by the four connecting rods 3 gathers horizontally along its own diagonal direction, and gradually rises along the vertical diagonal direction of the rhombus until the positioning platform 10 supports a series of vertical shock absorber mounting seats When the bottom of 1-4, stop rising, and with detachable positioning bolt the screw hole on the vertical shock absorber mounting base 1-4 and the positioning platform 10 is fastened temporarily. Then, rotate the pressure plate 9-3 around the screw column 9-1 so that the lateral gap 9-3-1 fits with another screw column 9-1, and then rotate the two pressure drop nuts 9-2 respectively and pass them The two press the pressing plate 9-3 against the upper end surface of the first series of vertical shock absorber mounting seats 1-4, thereby clamping the upper end surface of the first series of vertical shock absorber mounting seats 1-4 on the door-shaped pressing plate mechanism 9 Inside. Finally, reversely rotate the two vertical support rods 8 respectively, so that the two extend downward along the vertical threaded through hole 7-2 until the lower end of the vertical support rod 8 is supported on the ground, so that the rotating arm The type axle box 1 is reliably fixed with the axial horizontal attitude of the axle box cylinder body, and the subsequent installation process of the axle box rear end cover 1-2 is carried out.

Claims (5)

1. Jib axle box auxiliary positioning device, its characterized in that: the device comprises a base (2), four connecting rods (3), a hand-operated screw rod (4), a unthreaded hole sleeve double-hinged seat (5), a nut double-hinged seat (6), a cross beam (7), two vertical supporting rods (8), a door-shaped pressing plate mechanism (9) and a positioning platform (10), wherein the four connecting rods (3), the hand-operated screw rod (4), the unthreaded hole sleeve double-hinged seat (5) and the nut double-hinged seat (6) jointly form a rhombic scissor type lifting mechanism; a base double-shaft seat (2-1) is arranged at the center of the base (2), a cross beam double-shaft seat (7-1) is arranged at the lower end of the middle section of the cross beam (7), and vertical threaded through holes (7-2) are symmetrically arranged at the left and right of two ends of the cross beam (7); the base double-shaft seat (2-1) and the beam double-shaft seat (7-1) are respectively and rotatably connected with the top end and the bottom of the scissor type lifting mechanism; the positioning platform (10) and the door-shaped pressing plate mechanism (9) are fixedly connected to the upper end surface of the middle section of the cross beam (7); the two vertical supporting rods (8) are respectively in threaded connection with the vertical threaded through holes (7-2) which correspond one to one.

2. The boom axlebox auxiliary positioning device of claim 1, wherein: two axially parallel base rotating shafts are arranged inside the base double-shaft seat (2-1), two axially parallel cross beam rotating shafts are arranged inside the cross beam double-shaft seat (7-1), and the base rotating shafts and the cross beam rotating shafts are parallel to each other; two ends of the connecting rod (3) are respectively provided with a shaft seat hole (3-1) and a hinged shaft hole (3-2) which are parallel to each other; the main body of the unthreaded hole sleeve double-hinged support (5) is a sleeve (5-1) with a smooth inner diameter, and two sleeve pin shafts (5-2) are arranged on the same diameter of the outer diameter side wall of the sleeve in a bilateral symmetry manner; the main body of the nut double-hinged support (6) is an internal thread nut (6-1), and two nut pin shafts (6-2) are arranged on the same diameter of the outer diameter side wall of the nut in a bilateral symmetry mode; each base rotating shaft and each beam rotating shaft are respectively and rotatably connected with the shaft seat holes (3-1) which correspond to one another; each sleeve pin shaft (5-2) and each nut pin shaft (6-2) are respectively in rotary connection with the hinge shaft holes (3-2) which correspond to one another.

3. The boom axlebox auxiliary positioning device of claim 2, wherein: the hand-operated screw rod (4) comprises a screw rod (4-1) and a rocker arm handle (4-2) coaxially connected with one end of the screw rod; the other end of the screw rod (4-1) penetrates through the unthreaded hole of the sleeve (5-1) and is in threaded connection with the nut (6-1) to form a screw rod mechanism.

4. The boom axlebox auxiliary positioning device of claim 3, wherein: the door-shaped pressing plate mechanism (9) comprises two screw rod stand columns (9-1), two pressure drop nuts (9-2) and a pressing plate (9-3), wherein the two screw rod stand columns (9-1) are vertically and fixedly connected to the upper end face of the cross beam (7) and are symmetrically arranged on the left side and the right side of the positioning platform (10); one end of the pressing plate (9-3) is provided with a pressing plate unthreaded hole, and the other end is provided with a lateral opening (9-3-1); the distance between the press plate unthreaded hole and the lateral opening (9-3-1) is just equal to the axle distance of the two screw upright columns (9-1); the pressing plate unthreaded hole is coaxially nested and rotationally connected with a screw upright post (9-1); each pressure drop nut (9-2) is in one-to-one corresponding threaded connection with one screw upright post (9-1) and is positioned above the pressure plate (9-3).

5. The boom axlebox auxiliary positioning device of claim 3, wherein: the four connecting rods (3) in the scissor type lifting mechanism are enclosed together to form a square or a rhombus; the length of the screw rod (4-1) is greater than the sum of the lengths of the two connecting rods (3); the height of the vertical support rod (8) is the same as the length of the screw rod (4-1).

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