CN214617720U - Conveying mechanism of movable car lifting jack of railway vehicle - Google Patents
Conveying mechanism of movable car lifting jack of railway vehicle Download PDFInfo
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- CN214617720U CN214617720U CN202120816733.8U CN202120816733U CN214617720U CN 214617720 U CN214617720 U CN 214617720U CN 202120816733 U CN202120816733 U CN 202120816733U CN 214617720 U CN214617720 U CN 214617720U
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- lead screw
- sheath
- seat
- screw rod
- lifting jack
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Abstract
The utility model discloses a transmission mechanism of a movable car lifting jack of a rail vehicle, which comprises a lead screw seat, a flange seat, a lead screw, a speed reducing motor, a transmission nut and a sheath; the lower end of the screw rod is rotatably arranged on the screw rod seat, and the upper end of the screw rod is rotatably arranged on the flange seat; the speed reducing motor is connected with the upper end of the screw rod and drives the screw rod to rotate back and forth; the transmission nut is screwed with the lead screw and is positioned between the lead screw seat and the flange seat; the sheath is telescopically sleeved outside the screw rod, the upper end of the sheath is fixedly connected with the flange seat, and the lower end of the sheath is fixedly connected with the transmission nut. Through being provided with the sheath, utilize the sheath to compress or stretch when transmission nut rises or descends, when the car lifting jack is not used, can make transmission nut descend to the extreme low position for the lead screw can be wrapped completely to the sheath, avoids the lead screw to expose for a long time and leads to being infected with impurity such as dust, guarantees that the lead screw can transmit steadily lastingly, brings the facility for the use.
Description
Technical Field
The utility model belongs to the technical field of the car lifting jack field and specifically relates to indicate a transport mechanism of portable car lifting jack of rail vehicle.
Background
With the rapid development of cities, the traditional road traffic is abnormally congested, and the requirements of people on going to and from work and going out are difficult to meet. The rail transit has the advantages that the one-time carrying capacity is large, the number of operation shifts is large, congestion cannot occur in collective regulation and control, and the like, and the rail transit is vigorously developed.
In order to ensure the safety of rail traffic, after the rail vehicle runs for a period of time, the wheel sets in the bogies and other parts at the bottom of the train need to be overhauled or replaced, and when in maintenance, the whole train of grouped vehicles need to be lifted to a certain height so as to replace the bogies and other parts at the bottom of the vehicles.
During maintenance, the carriages of the vehicle are required to be lifted by the fixed lifting equipment or the crown block to be separated from the chassis, so that the vehicle is convenient to maintain, the maintained vehicle is often moved to a position, a plurality of fixed lifting equipment or crown blocks are required to be arranged in a maintenance workshop, the effective working use area of the workshop is reduced, the number of equipment is increased, particularly, when a plurality of sections of vehicles are required to be maintained, each carriage is required to be moved to the position, the maintenance time of the vehicles is long, the occupied equipment is more, the efficiency is low, the vehicles are easy to collide with due to lifting, the outer surfaces of the vehicles are damaged, certain potential safety hazards exist, the safety production is influenced, the maintenance cost is increased, and when the carriages are lifted or lowered by the fixed lifting equipment, the synchronous lifting or descending can not be really realized, and accidents are easy to happen.
The car lifting jack is equipment for lifting a car body from the bottom of the car body, and the car body cannot be damaged in the lifting process. However, the conveying mechanisms of the existing car lifting jack are all screw mechanisms, however, the screws of the screw mechanisms are exposed outside for a long time when the car lifting jack is not used, so that impurities such as dust are polluted, and the stable transmission of the screws is influenced. Therefore, there is a need for an improved transfer mechanism for a present car lifting jack.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a conveying mechanism of a mobile car lifting jack for rail vehicles, which can effectively solve the problem that the conventional conveying mechanism of the car lifting jack is easy to be contaminated by impurities such as dust, resulting in unstable screw transmission.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a transmission mechanism of a movable car lifting jack of a railway vehicle comprises a screw rod seat, a flange seat, a screw rod, a speed reducing motor, a transmission nut and a sheath; the flange seat is positioned right above the screw rod seat; the lead screw is vertically arranged, the lower end of the lead screw is rotatably arranged on the lead screw seat, and the upper end of the lead screw is rotatably arranged on the flange seat; the speed reducing motor is fixed on the flange seat, and is connected with the upper end of the screw rod and drives the screw rod to rotate back and forth; the transmission nut is screwed with the lead screw and is positioned between the lead screw seat and the flange seat; the sheath is telescopically sleeved outside the screw rod, the upper end of the sheath is fixedly connected with the flange seat, and the lower end of the sheath is fixedly connected with the transmission nut.
Preferably, the lower end of the screw rod is rotatably mounted on the screw rod seat through a first bearing, and the upper end of the screw rod is rotatably mounted on the flange seat through a second bearing.
Preferably, an encoder assembly is arranged in the screw seat and is positioned below the screw and connected with the screw.
Preferably, the speed reducing motor is a cycloidal pin gear speed reducing motor.
Preferably, a plunger type travel switch is arranged on the side surface of the transmission nut.
Preferably, the sheath is a rubber bellows having a length of 1900 mm.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:
through being provided with the sheath, utilize the sheath to compress or stretch when transmission nut rises or descends, when the car lifting jack is not used, can make transmission nut descend to the extreme low position for the lead screw can be wrapped completely to the sheath, avoids the lead screw to expose for a long time and leads to being infected with impurity such as dust, guarantees that the lead screw can transmit steadily lastingly, brings the facility for the use.
To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
drawings
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view at position A in FIG. 1;
fig. 3 is a cross-sectional view of a preferred embodiment of the present invention.
The attached drawings indicate the following:
10. screw base 20 and flange base
30. Lead screw 40, gear motor
50. Drive nut 60, sheath
71. First bearing 72, second bearing
73. Encoder assembly 74, plunger travel switch
Detailed Description
Referring to fig. 1 to 3, a specific structure of a preferred embodiment of the present invention is shown, which includes a screw base 10, a flange base 20, a screw 30, a reduction motor 40, a transmission nut 50 and a sheath 60.
The flange seat 20 is positioned right above the screw seat 10; the lead screw 30 is vertically arranged, the lower end of the lead screw 30 is rotatably arranged on the lead screw base 10, and the upper end of the lead screw 30 is rotatably arranged on the flange base 20; in the present embodiment, the lower end of the lead screw 30 is rotatably mounted on the lead screw base 10 through a first bearing 71, and the upper end of the lead screw 30 is rotatably mounted on the flange base 20 through a second bearing 72; an encoder assembly 73 is arranged in the screw base 10, and the encoder assembly 73 is positioned below the screw 30 and connected with the screw 30.
The speed reducing motor 40 is fixed on the flange base 20, and the speed reducing motor 40 is connected with the upper end of the screw rod 30 and drives the screw rod 30 to rotate back and forth; the transmission nut 50 is in threaded connection with the lead screw 30 and is positioned between the lead screw seat 10 and the flange seat 20; in the present embodiment, the reduction motor 40 is a cycloidal-pin gear reduction motor, and the side surface of the transmission nut 50 is provided with a plunger type travel switch 74.
This sheath 60 telescopically overlaps outside the lead screw 30, and the upper end and the flange seat 20 fixed connection of sheath 60, the lower extreme and the drive nut 50 fixed connection of sheath 60 to play guard action such as dustproof to lead screw 30. In this embodiment, the sheath 60 is a rubber bellows having a length of 1900 mm.
Detailed description the working principle of the present embodiment is as follows:
when the mechanism is used, the mechanism is installed on a car lifting jack, the transmission nut 50 is located at the lowest position of the lead screw 30 in the original state, the sheath 60 completely wraps the lead screw 30, after the car lifting jack is started, the speed reducing motor 40 drives the lead screw 30 to rotate back and forth, so that the transmission nut 50 ascends or descends along the lead screw 30, and the sheath 60 is compressed or stretched in the ascending or descending process of the transmission nut 50.
The utility model discloses a design key is: through being provided with the sheath, utilize the sheath to compress or stretch when transmission nut rises or descends, when the car lifting jack is not used, can make transmission nut descend to the extreme low position for the lead screw can be wrapped completely to the sheath, avoids the lead screw to expose for a long time and leads to being infected with impurity such as dust, guarantees that the lead screw can transmit steadily lastingly, brings the facility for the use.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (6)
1. The utility model provides a transport mechanism of portable car lifting jack of rail vehicle which characterized in that: comprises a screw rod seat, a flange seat, a screw rod, a speed reducing motor, a transmission nut and a sheath; the flange seat is positioned right above the screw rod seat; the lead screw is vertically arranged, the lower end of the lead screw is rotatably arranged on the lead screw seat, and the upper end of the lead screw is rotatably arranged on the flange seat; the speed reducing motor is fixed on the flange seat, and is connected with the upper end of the screw rod and drives the screw rod to rotate back and forth; the transmission nut is screwed with the lead screw and is positioned between the lead screw seat and the flange seat; the sheath is telescopically sleeved outside the screw rod, the upper end of the sheath is fixedly connected with the flange seat, and the lower end of the sheath is fixedly connected with the transmission nut.
2. The transfer mechanism of the mobile rail car lifting jack of claim 1, wherein: the lower extreme of lead screw passes through first bearing and rotationally installs on the lead screw seat, and the upper end of lead screw passes through the second bearing and rotationally installs on the flange seat.
3. The transfer mechanism of the mobile rail car lifting jack of claim 1, wherein: and an encoder assembly is arranged in the screw rod seat, is positioned below the screw rod and is connected with the screw rod.
4. The transfer mechanism of the mobile rail car lifting jack of claim 1, wherein: the speed reducing motor is a cycloidal pin gear speed reducing motor.
5. The transfer mechanism of the mobile rail car lifting jack of claim 1, wherein: and a plunger type travel switch is arranged on the side surface of the transmission nut.
6. The transfer mechanism of the mobile rail car lifting jack of claim 1, wherein: the sheath is a rubber corrugated pipe, and the length of the rubber corrugated pipe is 1900 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120816733.8U CN214617720U (en) | 2021-04-21 | 2021-04-21 | Conveying mechanism of movable car lifting jack of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120816733.8U CN214617720U (en) | 2021-04-21 | 2021-04-21 | Conveying mechanism of movable car lifting jack of railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617720U true CN214617720U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120816733.8U Active CN214617720U (en) | 2021-04-21 | 2021-04-21 | Conveying mechanism of movable car lifting jack of railway vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN214617720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11773807B1 (en) | 2022-05-10 | 2023-10-03 | Honeywell International Inc. | Actuator systems for thrust reverser |
-
2021
- 2021-04-21 CN CN202120816733.8U patent/CN214617720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11773807B1 (en) | 2022-05-10 | 2023-10-03 | Honeywell International Inc. | Actuator systems for thrust reverser |
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