Supporting type lifting appliance for wheel set axle box of subway train
By designing a support type spreader for the side-rotable front boom and a front-back rotatable rear boom, the problem of poor stability during the lifting of the wheel-to-axle box of the subway train is solved, and higher stability and safety are achieved.
Patent Information
- Application Number
- CN202421071901.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the prior art, when hoisting the wheel-to-axle box of the subway train, there are problems such as poor stability, high risk factor in the lifting process, and high loading difficulty.
A support type spreader is designed, including a first bottom support assembly and a second bottom support assembly. The front boom can be rotated sideways, and the rear boom can be rotated forward and backward, and is inserted into the bottom of the wheel-to-wheel axle box by rotating means, reducing the longitudinal distance between the top of the wheel-to-wheel axle box and the horizontal distance between the center of gravity and the spreader frame, thereby reducing torque and improving stability.
Through this design, the torque of the wheel-to-axle box during the lifting process is reduced, the stability and safety of the lifting are improved, and the loading difficulty is reduced.
Smart Images
Figure CN222556330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a wheelset axle box hanger, in particular to a supporting type hanger for a wheelset axle box of a subway train. Background Art
[0002] Currently, there are no special lifting tools for lifting wheelset axle boxes during subway train overhaul. The traditional operation method is for operators to carry and transfer them manually. This method is not only inefficient, but also has great safety hazards in manual operation.
[0003] In the prior art, lifting is generally performed by a single-point or multi-point fixing method. Among them, the single-point lifting method usually requires finding the center of gravity of the wheelset axle box, and then using the top of the center of gravity as the lifting connection point. Although this method is easy to operate, it is prone to large swings and the lifting process is highly dangerous.
[0004] The multi-point fixed lifting method can solve the above problems. In this method, it is necessary to find multiple suitable connection positions on the wheelset axle box. However, for the wheelset axle box, there is no suitable connection on the side, so it can only be lifted by bottom support. Therefore, the distance between the center of gravity of the wheelset axle box and the bottom support of the hoist is too large or the vertical distance between the top of the wheelset axle box and the lifting point is too large, so that the unstable torque is too large, affecting the stability of the lifting process and making loading difficult. Utility Model Content
[0005] The purpose of the utility model is to provide a supporting type hanger for the wheelset axle box of a subway train. By designing a first bottom support assembly and a second bottom support assembly, the front hanger arm can rotate laterally and the rear hanger arm can rotate forward and backward, so that while being inserted into the bottom of the wheelset axle box by rotation, the longitudinal distance between the top of the wheelset axle box and the lifting ear is reduced, and the horizontal distance between the center of gravity of the wheelset axle box and the front and rear sections of the hanger frame is reduced, thereby reducing the torque causing the wheelset axle box to rotate forward and backward and the torque causing the wheelset axle box to rotate around the crossbeam, thereby improving stability.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A support type hanger for axle box of a subway train wheel set, comprising:
[0008] A spreader frame and a lifting lug provided on the spreader frame;
[0009] The first bottom supporting assembly and the second bottom supporting assembly are respectively arranged at two ends of the sling frame;
[0010] in:
[0011] The first bottom support assembly includes a front fork cantilever and two front suspension arms arranged on the front fork cantilever, the two front suspension arms are rotatably connected to the front fork cantilever and are axially symmetrically arranged relative to the axis of the hanger, wherein the axis of the hanger is a line connecting the midpoints of the first bottom support assembly and the second bottom support assembly, and the axis of the rotating shaft of the front suspension arm is parallel to the axis of the hanger;
[0012] The second bottom support assembly includes a rear boom, which is rotatably connected to the hanger frame, and the rotation axis is perpendicular to the hanger axis and the vertical direction.
[0013] The front fork cantilever includes a base plate and two connecting forks arranged at both ends of the base plate, the two connecting forks are symmetrically arranged, and the connecting fork includes a first connecting rod and two second connecting rods, the second connecting rod is perpendicular to the first connecting rod, and the first ends of the two second connecting rods are respectively connected to the two ends of the first connecting rod, and the second ends are both provided with a first rotating shaft hole.
[0014] The front suspension arm includes a support frame and two third connecting rods arranged on the support frame, the third connecting rods are provided with a second rotating shaft hole, and the two third connecting rods on the single front suspension arm are respectively fitted with the two second connecting rods on the same side of the front fork cantilever and connected through the first rotating shaft.
[0015] The support frame includes a first frame edge, a second frame edge, a third frame edge and a support edge, one end of the first frame edge and the third frame edge are respectively connected to the two ends of the second frame edge, and the other end is respectively connected to the two ends of the support edge, and the projection area of the support edge on the support surface is greater than the sum of the projection areas of the first frame edge, the second frame edge and the third frame edge on the support surface, wherein the support surface is a plane perpendicular to the base surface of the support frame.
[0016] A positioning pin is arranged on the supporting edge.
[0017] A first triangular reinforcement plate is provided between the base plate and the hanger frame.
[0018] The rear boom includes a support plate, a connecting plate and a positioning pin arranged on the support plate, one end of the connecting plate is rotatably connected to the sling frame through a second rotating shaft, and the other end is fixedly connected to the support plate, and the support plate and the connecting plate are vertically arranged.
[0019] Two positioning pins are arranged on the support plate.
[0020] A second triangular reinforcement plate is provided between the support plate and the connecting plate.
[0021] The hanger frame includes a crossbeam, a first column and a second column, and the first bottom supporting assembly and the second bottom supporting assembly are connected to the first column and the second column respectively.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] 1. By designing the first bottom support assembly and the second bottom support assembly, the front boom can rotate laterally and the rear boom can rotate forward and backward, so that the longitudinal distance between the top of the wheelset axle box and the lifting lug can be shortened while the wheelset axle box is inserted into the bottom of the wheelset axle box by rotation, and the horizontal distance between the center of gravity of the wheelset axle box and the front and rear sections of the hoist frame can be shortened, thereby reducing the torque causing the wheelset axle box to rotate forward and backward and the torque causing the wheelset axle box to rotate around the crossbeam, thereby improving stability.
[0024] 2. A base plate and a connecting fork are used as the first bottom support component. The first connecting rod of the connecting fork can expand the distance between the second connecting rods, thereby improving the stability of the forward and backward shaking. The design of the second connecting rod and the third connecting rod can facilitate installation.
[0025] 3. By designing a larger support edge, damage to the wheelset axle box can be reduced.
[0026] 4. The rear boom adopts a design including a support plate, a connecting plate and a positioning pin arranged on the support plate. Since the connecting plate has a relatively flat size, it is not easy to break in the front and rear rotation directions and has higher strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural schematic diagram of the utility model;
[0028] Figure 2 It is a schematic diagram of the state of the utility model when in use;
[0029] Among them: 1. lifting eye, 2. cross beam, 3. front fork cantilever, 4. front lifting arm, 5. safety pin, 6. rear lifting arm. DETAILED DESCRIPTION
[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.
[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "proximal", "distal", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.
[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0036] A support type hanger for axle box of a subway train wheel set, such as Figure 1 As shown, including:
[0037] A sling frame and a lifting lug 1 provided on the sling frame;
[0038] The first bottom supporting assembly and the second bottom supporting assembly are respectively arranged at two ends of the sling frame;
[0039] in:
[0040] The first bottom supporting assembly includes a front fork cantilever 3 and two front suspension arms 4 arranged on the front fork cantilever 3, the two front suspension arms 4 are rotatably connected to the front fork cantilever 3 and are arranged symmetrically with respect to the axis of the hanger, wherein the axis of the hanger is a line connecting the midpoints of the first bottom supporting assembly and the second bottom supporting assembly, and the axis of the rotation shaft of the front suspension arm 4 is parallel to the axis of the hanger;
[0041] The second bottom support assembly includes a rear boom 6, which is rotatably connected to the hanger frame, and the axis of rotation is perpendicular to the hanger axis and the vertical direction.
[0042] By designing the first bottom support assembly and the second bottom support assembly, the front boom 4 can rotate sideways and the rear boom 6 can rotate forward and backward, so that Figure 2 As shown, the wheel set axle box can be inserted into the bottom of the wheel set axle box by rotation, while the longitudinal distance between the top of the wheel set axle box and the lifting lug can be reduced, as well as the horizontal distance between the center of gravity of the wheel set axle box and the front and rear sections of the hanger frame can be reduced, thereby reducing the torque causing the wheelset axle box to rotate forward and backward and the torque causing the wheelset axle box to rotate around the crossbeam, thereby improving stability.
[0043] In most embodiments, the front fork cantilever 3 includes a base plate and two connecting forks arranged at both ends of the base plate, the two connecting forks are symmetrically arranged, the connecting forks include a first connecting rod and two second connecting rods, the second connecting rods are perpendicular to the first connecting rod, and the first ends of the two second connecting rods are respectively connected to the two ends of the first connecting rod, and the second ends are both provided with a first shaft hole. In addition, the front suspension arm 4 includes a support frame and two third connecting rods arranged on the support frame, the third connecting rods are provided with a second shaft hole, and the two third connecting rods on the single front suspension arm 4 are respectively fitted with the two second connecting rods on the same side of the front fork cantilever 3 and connected through the first shaft.
[0044] A base plate and a connecting fork are used as the first bottom support component. The first connecting rod of the connecting fork can expand the distance between the second connecting rods, thereby improving the stability of the forward and backward shaking. The design of the second connecting rod and the third connecting rod can facilitate installation.
[0045] Specifically, in some embodiments, the support frame includes a first frame edge, a second frame edge, a third frame edge and a support edge, one end of the first frame edge and the third frame edge are respectively connected to the two ends of the second frame edge, and the other end is respectively connected to the two ends of the support edge, and the projection area of the support edge on the support surface is greater than the sum of the projection areas of the first frame edge, the second frame edge and the third frame edge on the support surface, wherein the support surface is a plane perpendicular to the base surface of the support frame. By designing a larger support edge, damage to the wheelset axle box can be reduced.
[0046] Generally, a locating pin is provided on the support edge, which can cooperate with the bottom of the front end of the wheelset axle box to prevent the position from shifting. In addition, in some embodiments, a first triangular reinforcing plate is provided between the base plate and the hanger frame, thereby increasing the strength.
[0047] In some embodiments, the rear boom 6 includes a support plate, a connecting plate, and a positioning pin disposed on the support plate, one end of the connecting plate is rotatably connected to the sling frame via a second rotating shaft, and the other end is fixedly connected to the support plate, and the support plate and the connecting plate are vertically arranged. The rear boom adopts a design including a support plate, a connecting plate, and a positioning pin disposed on the support plate. Since the connecting plate has a relatively flat size, it is not easy to break in the front-rear rotation direction and has higher strength.
[0048] Specifically, since the heights of the supported surfaces at the front and rear bottoms of the wheelset axle box are inconsistent, the lower throat boom 6 will be subjected to a larger forward and backward rotational torque. In almost all embodiments, the rotation of the vertical plate is organized by inserting the safety pin 5, which will generate a relatively large pressure. This pressure will form a large torque on both sides. Therefore, the connecting plate is designed to be in a plate shape and perpendicular to the second rotating shaft, which can improve the forward and backward strength and avoid cracking.
[0049] In addition, in some embodiments, the support plate is provided with two positioning pins, which are respectively located on both sides of the vertical plate. Similarly, a second triangular reinforcement plate is provided between the support plate and the connecting plate to improve the strength.
[0050] In addition, the sling frame includes a crossbeam 2, a first column and a second column, and the first bottom supporting assembly and the second bottom supporting assembly are respectively connected to the first column and the second column, which can reduce the weight.
[0051] When disassembling or installing the axle box, the front and rear ends of the hoist are buckled together with the front and rear ends of the axle box respectively, and the safety pin 5 is inserted to make the hoist safer. This hoist can be well matched with the front and rear end structures of the axle box. This special hoist is specially designed for the wheelset axle box, which can make the operator operate more conveniently and improve work efficiency and safety.
[0052] The operation process is as follows: the operator adjusts the height to fold the front boom 4 and the rear boom 6, place the sling above the wheelset axle box, then lower the front boom 4 and the rear boom 6, align the locating pins on the front boom 4 and the rear boom 6 with the holes on the wheelset axle box to make lifting safer, insert the safety pin 5 into the pin hole to prevent the rear boom 6 from loosening, thereby improving safety, hook the hook onto the lifting ear 1, and lift the sling and the axle box.
Claims
1. A support type hanger for axle box of a subway train wheel set, characterized in that: include: A sling frame and a lifting lug (1) provided on the sling frame; The first bottom supporting assembly and the second bottom supporting assembly are respectively arranged at two ends of the sling frame; in: The first bottom support assembly comprises a front fork cantilever (3) and two front suspension arms (4) arranged on the front fork cantilever (3), the two front suspension arms (4) are rotatably connected to the front fork cantilever (3) and are arranged symmetrically with respect to the axis of the sling, wherein the axis of the sling is a line connecting the midpoints of the first bottom support assembly and the second bottom support assembly, and the axis of the rotation shaft of the front suspension arm (4) is parallel to the axis of the sling; The second bottom support assembly comprises a rear boom (6), the rear boom (6) is rotatably connected to the sling frame, and the axis of rotation is perpendicular to the sling axis and the vertical direction.
2. The supporting type hanger for the axle box of a subway train wheelset according to claim 1, characterized in that: The front fork cantilever (3) comprises a base plate and two connecting forks arranged at two ends of the base plate, the two connecting forks are symmetrically arranged, the connecting forks comprise a first connecting rod and two second connecting rods, the second connecting rods are perpendicular to the first connecting rod, the first ends of the two second connecting rods are respectively connected to the two ends of the first connecting rod, and the second ends are both provided with a first rotating shaft hole.
3. The supporting type hanger for the axle box of a subway train wheelset according to claim 2, characterized in that: The front suspension arm (4) comprises a support frame and two third connecting rods arranged on the support frame, the third connecting rods are provided with a second rotating shaft hole, and the two third connecting rods on the single front suspension arm (4) are respectively fitted with the two second connecting rods on the same side of the front fork cantilever (3) and connected through the first rotating shaft.
4. The supporting type hanger for the axle box of a subway train wheelset according to claim 3, characterized in that: The support frame includes a first frame edge, a second frame edge, a third frame edge and a support edge, one end of the first frame edge and the third frame edge are respectively connected to the two ends of the second frame edge, and the other end is respectively connected to the two ends of the support edge, and the projection area of the support edge on the support surface is greater than the sum of the projection areas of the first frame edge, the second frame edge and the third frame edge on the support surface, wherein the support surface is a plane perpendicular to the base surface of the support frame.
5. The supporting type hanger for the axle box of a subway train wheelset according to claim 4, characterized in that: A positioning pin is arranged on the supporting edge.
6. The supporting type hanger for the axle box of a subway train wheelset according to claim 2, characterized in that: A first triangular reinforcement plate is provided between the base plate and the hanger frame.
7. The supporting type hanger for the axle box of a subway train wheelset according to claim 1, characterized in that: The rear suspension arm (6) comprises a support plate, a connecting plate and a positioning pin arranged on the support plate, one end of the connecting plate is rotationally connected to the suspension frame via a second rotating shaft, and the other end is fixedly connected to the support plate, and the support plate and the connecting plate are arranged vertically.
8. The supporting type hanger for the axle box of a subway train wheelset according to claim 7, characterized in that: Two positioning pins are arranged on the support plate.
9. The supporting type hanger for the axle box of a subway train wheelset according to claim 7, characterized in that: A second triangular reinforcement plate is provided between the support plate and the connecting plate.
10. The supporting type hanger for the axle box of a subway train wheelset according to claim 1, characterized in that: The hanger frame comprises a crossbeam (2), a first column and a second column, and the first bottom supporting assembly and the second bottom supporting assembly are connected to the first column and the second column respectively.