CN109969985B - Double-arm car lifting jack - Google Patents
Double-arm car lifting jack Download PDFInfo
- Publication number
- CN109969985B CN109969985B CN201910370314.3A CN201910370314A CN109969985B CN 109969985 B CN109969985 B CN 109969985B CN 201910370314 A CN201910370314 A CN 201910370314A CN 109969985 B CN109969985 B CN 109969985B
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- Prior art keywords
- frame
- lifting
- support
- support frame
- frame body
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- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The invention belongs to the technical field of overhauling of rail vehicles, and discloses a double-arm car lifting machine which comprises a frame body, a moving plate arranged at the bottom of the frame body, a lifting assembly sliding along the vertical direction of the frame body and a power assembly driving the lifting assembly to slide; the lifting assembly comprises a support frame which slides along the vertical direction of the frame body, a bracket connected to the outer side of the support frame and lifting frames symmetrically arranged on the front side of the bracket; the lifting frame is fixedly arranged on the bracket through the mounting seat; the lifting frame is hinged with the mounting seat, the rotation axis of the lifting frame is arranged vertically, the front end of the lifting frame is horizontally provided with a supporting arm, and the inner side of the supporting arm is a bevel part. The power assembly comprises a main motor arranged above the frame body and a screw rod fixedly connected on an output shaft of the main motor in a coaxial line, wherein the screw rod is vertically arranged in the through groove, and the screw rod is in threaded connection with the inner wall of the support frame. The invention has the advantages of compact structure, reasonable layout, convenient operation, good stability and high safety.
Description
Technical Field
The invention belongs to the technical field of overhauling of rail vehicles, and particularly relates to a double-arm car lifting jack.
Background
With the rapid development of cities, urban rail transit becomes the main stream of urban traffic development in China, and the traffic form has the advantages of saving ground space, stabilizing vehicle speed, protecting environment, saving energy, saving time and the like, and more citizens select the urban rail transit in a travel mode, so that the urban rail transit is greatly developed.
In the field of rail transportation, rail trolleys are increasingly used due to good performance and low noise, but in order to ensure safe operation of urban rail transportation vehicles, the vehicles need to be overhauled and maintained after the vehicles run for a period of time, the vehicles need to be lifted off the ground during overhauling, a certain space is provided for overhauling, a trolley lifting machine is needed in the process, the trolley lifting machine in the prior art is equipment for lifting the trolley from the bottom of the trolley body, the existing trolley lifting frame comprises a buried type and a movable type, but is designed for the steel wheel rail type rail transportation vehicles, and the part contacted with the trolley body is a trolley lifting point made of steel plates and cannot lift rubber wheels of the rail trolleys. Therefore, providing a car lifting jack for a rail car is an urgent problem to be solved.
The car lifting machine with the double self-locking structure comprises a machine body of the car lifting machine, a bracket mechanism and a screw rod, wherein the bracket mechanism is used for lifting the car body and can move up and down along the machine body, the screw rod is vertically arranged in the machine body, a working nut is matched with the screw rod, and the working nut is fixedly connected to the bracket mechanism; the driving device comprises a worm and gear speed reducer positioned on the bottom plate of the machine body and is coaxially arranged with the screw rod; however, the driving machine is in direct contact with the vehicle body, and the rubber wheels of the rail trolley cannot be supported.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a double-arm car lifting machine, which comprises a frame body, a moving plate arranged at the bottom of the frame body, a lifting assembly sliding along the vertical direction of the frame body and a power assembly driving the lifting assembly to slide; the inside of the frame body is provided with a through groove which penetrates through the frame body along the vertical direction. The lifting assembly comprises a support frame which slides along the vertical direction of the frame body, a bracket connected to the outer side of the support frame and lifting frames symmetrically arranged on the front side of the bracket; the support frame comprises two inner walls and two outer walls, wherein the inner walls are arranged in the outer walls and are mutually parallel to each other; the lifting frame is fixedly arranged on the bracket through the mounting seat; the front side of the bracket is provided with a plurality of threaded holes, so that the installation position of the installation seat on the bracket can be conveniently adjusted; the lifting frame is hinged with the mounting seat, the rotation axis of the lifting frame is vertically arranged, the front end of the lifting frame is horizontally provided with a supporting arm capable of swinging, the inner side of the supporting arm is a bevel part, and the bevel part is an inclined surface with low inner side and high outer side. The support and the support frame are matched and installed through the linear slide rail and the linear slide rail slide block, the support frame can horizontally move along the front-back direction of the support frame, and the stop lever is installed at the rear side of the support frame.
The power assembly comprises a main speed reducer arranged above the frame body and a screw rod fixedly connected on an output shaft of the main speed reducer in a coaxial line, wherein the screw rod is vertically arranged in the through groove, two ends of the screw rod are rotationally connected with the frame body, and the screw rod is in threaded connection with the inner wall of the support frame.
The outer walls of the left side and the right side of the support frame are provided with support wheels, the support wheels are in contact with the upper surface of the support frame, an oil cylinder is connected between the front side of the support frame and the inner wall of the support frame, the end part of a piston rod of the oil cylinder is fixedly connected with the support frame, the inner wall of the support frame on the two sides of the oil cylinder is provided with a front main guide wheel, the front main guide wheel is in contact with the front side of the support frame body, the rear side of the inner wall of the support frame is symmetrically provided with a rear main guide wheel, the inner wall of the support frame below the rear main guide wheel is provided with a secondary guide wheel, the rear main guide wheel and the secondary guide wheel are in contact with the side wall of the support body, and the rotation axes of the front main guide wheel, the rear main guide wheel and the secondary guide wheel are horizontally arranged.
The floating support is arranged right below the supporting arm, the floating support is fixedly connected with the moving plate, the bottom end of the floating support is hinged with the driven wheel, a spring is arranged in the floating support, the spring is compressed when the bearing is carried, the moving plate is directly contacted with the track, when the bearing is not carried, the spring is stretched, the driven wheel is jacked, and the moving plate is separated from the track, so that friction is reduced. The rotary groove is symmetrically formed in the rear side of the movable plate, the driving wheel is installed in the rotary groove, the motion of the driving wheel is driven by the auxiliary motor, and the auxiliary motor is installed above the movable plate.
When the guide rail trolley is assembled or overhauled, the lead screw is driven to rotate through the main speed reducer, and the support frame is lowered to the lowest position. And then the locating pin of the lifting frame is pulled out to push the two supporting arms of the trolley to be in a left-right unfolding state so as to prevent the supporting arms from obstructing the guide rail trolley from entering the station. After the guide rail trolley is in place, the two supporting arms are controlled to be turned into a forward parallel state from left and right unfolding states, after the locating pins of the lifting frames are inserted, the control oil cylinder drives the support to horizontally move, the support drives the lifting frames to move towards the bottom of the trolley body, the two supporting arms are respectively located at two sides of the bottom of the trolley body, then the power assembly is controlled to enable the supporting frames to vertically move upwards, at the moment, the inclined surface parts on the lifting frames are abutted to the cambered surfaces of the bottom of the trolley body along with the lifting of the supporting frames, the two lifting frames lift the trolley body along with the lifting of the supporting frames, the trolley body can be lifted on the premise that the trolley body is not touched with the side walls of the trolley body, and as the lifting frames are only contacted with the trolley body, the possibility that the trolley body is damaged due to the contact of the trolley body and the lifting frames is reduced, and meanwhile, the contact area between the inclined surface parts and the trolley wheel is larger, so that the functions of protecting the trolley body and reducing the damage to the trolley wheel are achieved.
The beneficial effects are that: the invention has compact structure, reasonable layout, convenient operation and good stability, reduces the possibility of damaging the body caused by the contact of the body and the lifting frame, and has high safety; fills the gap of the rail trolley lifting machinery.
Drawings
FIG. 1 is a schematic view of the front side structure of the present invention;
FIG. 2 is a schematic view of the rear side structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of the present invention at A;
FIG. 4 is an enlarged schematic view of the structure of the present invention at B;
FIG. 5 is an enlarged schematic view of the structure of the present invention at C;
FIG. 6 is an enlarged schematic view of the structure of the present invention at D;
FIG. 7 is an enlarged schematic view of the structure of the present invention at E;
FIG. 8 is an enlarged schematic view of the structure of the present invention at F;
as shown in fig. 1-8: the power assembly 1, the main reducer 11, the screw rod 12, the frame body 2, the through groove 21, the supporting frame 3, the supporting wheel 31, the front main guide wheel 32, the rear main guide wheel 33, the auxiliary guide wheel 34, the linear slide rail 35, the linear slide rail slide block 36, the bracket 4, the stop lever 41, the threaded hole 42, the lifting frame 5, the supporting arm 51, the mounting seat 52, the inclined surface part 511, the moving plate 6, the auxiliary motor 61, the driving wheel 62, the rotating groove 63, the floating support 64, the driven wheel 65, the oil cylinder 7 and the lifting assembly 8.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the invention
The double-arm car lifting machine comprises a frame body 2, a moving plate 6 arranged at the bottom of the frame body 2, a lifting assembly 8 sliding along the vertical direction of the frame body 2 and a power assembly 1 driving the lifting assembly 8 to slide; the inside of the frame body 2 is provided with a through groove 21, and the through groove 21 penetrates through the frame body 2 along the vertical direction. The lifting assembly 8 comprises a support frame 3 which slides along the vertical direction of the frame body 2, a bracket 4 connected to the outer side of the support frame 3 and a lifting frame 5 symmetrically arranged on the front side of the bracket 4; the support frame 3 comprises two inner walls and two outer walls, wherein the inner walls are arranged in the outer walls and are mutually parallel; the lifting frame 5 is fixedly arranged on the bracket 4 through a mounting seat 52; the front side of the bracket 4 is provided with a plurality of threaded holes 42, so that the installation position of the installation seat 52 on the bracket 4 can be conveniently adjusted; the lifting frame 5 is hinged with the mounting seat 52, the rotation axis of the lifting frame 5 is vertically arranged, the front end of the lifting frame 5 is horizontally provided with a supporting arm 51 capable of swinging, the inner side of the supporting arm 51 is provided with a bevel part 511, and the bevel part 511 is an inclined surface with the inner side low and the outer side high. The support 4 and the support frame 3 are matched and installed through the linear slide rail 35 and the linear slide rail sliding block 36, the support frame 4 can horizontally move along the front-back direction of the support frame 3, and the stop lever 41 is installed at the rear side of the support frame 4.
The power assembly comprises a main speed reducer 11 arranged above the frame body 2 and a screw rod 12 which is coaxially and fixedly connected to an output shaft of the main speed reducer 11, wherein the screw rod 12 is vertically arranged inside a through groove 21, two ends of the screw rod 12 are rotationally connected with the frame body 2, and the screw rod 12 is in threaded connection with the inner wall of the support frame 3.
The outer walls of the left side and the right side of the support frame 3 are provided with support wheels 31, the support wheels 31 are in contact with the upper surface of the support frame 4, an oil cylinder 7 is connected between the front side of the support frame 4 and the inner wall of the support frame 3, the end part of a piston rod of the oil cylinder 7 is fixedly connected with the support frame 4, the inner wall of the support frame 3 on the two sides of the oil cylinder 7 is provided with a front main guide wheel 32, the front main guide wheel 32 is in contact with the front side of the frame body 2, the rear side of the inner wall of the support frame 3 is symmetrically provided with a rear main guide wheel 33, the inner wall of the support frame 3 below the rear main guide wheel 33 is provided with a secondary guide wheel 34, the rear main guide wheel 33 and the secondary guide wheel 34 are in contact with the side wall of the frame body 2, and the rotation axes of the front main guide wheel 32, the rear main guide wheel 33 and the secondary guide wheel 34 are horizontally arranged.
The floating support 64 is arranged right below the support arm 51, the floating support 64 is fixedly connected with the movable plate 6, the bottom end of the floating support 64 is hinged with the driven wheel 65, a spring is arranged in the floating support 64, the spring is compressed when the bearing is carried, the movable plate 6 is directly contacted with the track, the spring is stretched when the bearing is not carried, the driven wheel 65 is jacked, and the movable plate 6 is separated from the track, so that friction is reduced. The rear side of the movable plate 6 is symmetrically provided with a rotary groove 63, a driving wheel 62 is arranged in the rotary groove 63, the movement of the driving wheel 62 is driven by an auxiliary motor 61, and the auxiliary motor 61 is arranged above the movable plate 6.
When the rail trolley is assembled or overhauled, the lead screw 12 is driven to rotate by the main speed reducer 11, so that the support frame 3 is lowered to the lowest position. And then the locating pins of the lifting frame are pulled out to push the two supporting arms 51 of the trolley to be in a left-right unfolding state so as to prevent the supporting arms 51 from obstructing the trolley entering the station. After the guide rail trolley is in place, the two supporting arms 51 are controlled to be turned into a forward parallel state from a left-right unfolding state, after the locating pins of the lifting frame are inserted, the control oil cylinder 7 drives the support 4 to horizontally move, the support 4 drives the lifting frame 5 to move towards the bottom of the trolley body, the two supporting arms 51 are respectively located on two sides of the bottom of the trolley body, then the power assembly 1 is controlled to enable the supporting frame 3 to vertically move upwards, at the moment, the inclined surface part 511 on the lifting frame 5 can be abutted on the cambered surface of the bottom of the trolley body along with the lifting of the supporting frame 3, the two lifting frames 5 lift the trolley body along with the lifting of the supporting frame 3, the trolley body can be lifted on the premise that the trolley body is not touched with the side wall of the trolley body, and as the lifting frames 5 only contact the trolley body with the trolley body, the possibility that the trolley body is damaged due to the contact of the lifting frames 5 is reduced, meanwhile, the contact area between the inclined surface part 511 and the trolley wheel is larger, and the effect of protecting the trolley body and reducing damage to the trolley body.
When an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element, or be directly connected to the other element or be indirectly connected to the other element.
The terms of the directions such as left, right, up, down, etc. in this embodiment are merely relative concepts or references to the normal use state of the product, and should not be construed as limiting.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The utility model provides a both arms car lifting jack which characterized in that: the lifting device comprises a frame body (2), a moving plate (6) arranged at the bottom of the frame body (2), a lifting assembly (8) sliding along the vertical direction of the frame body (2) and a power assembly (1) driving the lifting assembly (8) to slide, wherein a through groove (21) is formed in the frame body (2), the lifting assembly (8) comprises a support frame (3) sliding along the vertical direction of the frame body (2), a support frame (4) connected to the outer side of the support frame (3) and a lifting frame (5) symmetrically arranged at the front side of the support frame (4), a supporting arm (51) capable of swinging is horizontally arranged at the front end of the lifting frame (5), an inclined surface part (511) is arranged on the inner side of the supporting arm (51), the support frame (4) and the support frame (3) are installed in a matched mode through a linear sliding rail (35) and a linear sliding rail block (36), and the support frame (4) horizontally moves along the front and back directions of the support frame (3).
The lifting frame (5) is fixedly arranged on the support (4) through the mounting seat (52), a plurality of threaded holes (42) are formed in the front side of the support (4), the lifting frame (5) is hinged to the mounting seat (52), the rotation axis of the lifting frame (5) is vertically arranged, and the inclined surface part (511) is an inclined surface with the inner side low and the outer side high; the outer walls of the left side and the right side of the support frame (3) are provided with support wheels (31), and the support wheels (31) are contacted with the upper surface of the bracket (4);
an oil cylinder (7) is connected between the front side of the support (4) and the inner wall of the support frame (3), the end part of a piston rod of the oil cylinder (7) is fixedly connected with the support (4), a front main guide wheel (32) is arranged on the inner wall of the support frame (3) at two sides of the oil cylinder (7), the front main guide wheel (32) is contacted with the front side of the frame body (2), rear main guide wheels (33) are symmetrically arranged on the rear side of the inner wall of the support frame (3), auxiliary guide wheels (34) are arranged on the inner wall of the support frame (3) below the rear main guide wheels (33), and the rear main guide wheels (33) and the auxiliary guide wheels (34) are contacted with the side wall of the frame body (2);
the rotation axes of the front main guide wheel (32), the rear main guide wheel (33) and the auxiliary guide wheel (34) are horizontally arranged;
the utility model discloses a movable plate, including support arm (51), movable plate (6), floating support (64), bottom of floating support (64) is articulated to have from driving wheel (65), the inside spring that is equipped with of floating support (64), change groove (63) have been seted up to movable plate (6) rear side symmetry, install action wheel (62) in change groove (63), the motion of action wheel (62) is driven by vice motor (61), vice motor (61) are installed in movable plate (6) top.
2. A two-arm car-lifting machine according to claim 1, characterized in that: the power assembly (1) comprises a main speed reducer (11) arranged above the frame body (2) and a screw rod (12) fixedly connected to an output shaft of the main speed reducer (11) in a coaxial line, wherein the screw rod (12) is vertically arranged inside the through groove (21), two ends of the screw rod (12) are rotationally connected with the frame body (2), and the screw rod (12) is in threaded connection with the inner wall of the support frame (3).
3. A two-arm car-lifting machine according to claim 1, characterized in that: a stop lever (41) is arranged at the rear side of the bracket (4).
4. A two-arm car-lifting machine according to claim 1, characterized in that: the through groove (21) penetrates through the frame body (2) along the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910370314.3A CN109969985B (en) | 2019-05-06 | 2019-05-06 | Double-arm car lifting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910370314.3A CN109969985B (en) | 2019-05-06 | 2019-05-06 | Double-arm car lifting jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109969985A CN109969985A (en) | 2019-07-05 |
| CN109969985B true CN109969985B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910370314.3A Active CN109969985B (en) | 2019-05-06 | 2019-05-06 | Double-arm car lifting jack |
Country Status (1)
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| CN (1) | CN109969985B (en) |
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| CN109969985A (en) | 2019-07-05 |
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