CN211765456U

CN211765456U - Lift car device and pallet car equipment

Info

Publication number: CN211765456U
Application number: CN202020125894.8U
Authority: CN
Inventors: 张风东; 李世海; 方喜风; 王昊; 陈伟涛
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-27
Anticipated expiration: 2030-01-19

Abstract

The utility model relates to a rail vehicle makes maintenance of equipment technical field, especially relates to a lift car device and pallet car equipment. This lift car device includes: lifting the outer cylinder; the lifting inner cylinder is sleeved in the lifting outer cylinder and can perform lifting motion along the axis of the lifting outer cylinder, and the lifting inner cylinder comprises at least three side walls which are connected with each other; each group of guide components comprises a plurality of groups of guide mechanisms which are respectively and fixedly connected on the same plane of the vehicle lifting outer cylinder, wherein the plane is vertical to the axis of the vehicle lifting outer cylinder, and each side wall of the vehicle lifting inner cylinder is respectively and correspondingly connected with one group of guide mechanisms. The car lifting device can guide and limit the lifting of the car lifting inner cylinder on the same plane of the car lifting outer cylinder, and at least overcomes the defect that the existing car body height supporting structure cannot guarantee enough anti-instability and anti-falling capability in the safety during the driving car body lifting and supporting process.

Description

Lift car device and pallet car equipment

Technical Field

The utility model relates to a rail vehicle makes maintenance of equipment technical field, especially relates to a lift car device and pallet car equipment.

Background

The production of the steel structure of the car body is an important link for manufacturing the rail car, and the platform car is one of very important process equipment used after the process of car body assembly, and the platform car runs through various processes and transportation among the processes after the car body assembly until the car body steel structure is handed over and checked.

The total length of the train body of the existing motor train unit reaches 25 meters, and certain procedures in the manufacturing process of the train body need to support the train body to a certain height for operation. The traditional vehicle height supporting structure and method are that two folding high-low frame trolleys are arranged under a vehicle body, when the height is switched, the whole vehicle body is firstly hoisted, and then an operator manually operates the folding high-low frame trolleys under the vehicle body, so that the switching of two limited supporting heights of 1200mm and 1800mm is completed.

The above vehicle body height supporting structure and method obviously have the following defects:

1. the operating personnel need stand at the bottom of the vehicle body in the lifting state of the vehicle body and rely on manual operation to complete the support height switching of the vehicle body height support structure, and great potential safety hazards exist in the operating process.

2. The existing vehicle body height supporting structure can only be statically adjusted to two limited heights of 1200mm and 1800mm, and cannot be adjusted to other required heights in real time.

3. The vehicle height supporting structure cannot ensure enough instability prevention and drop prevention capability in safety in the driving vehicle lifting and supporting process.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The embodiment of the utility model provides a lift car device and pallet car equipment for solve current high bearing structure of automobile body at least and can not guarantee to have the defect of sufficient unstability and anti-drop ability of preventing in the security in driving the automobile body lift and support process.

(II) technical scheme

In order to solve the technical problem, the utility model provides a lift car device, include:

lifting the outer cylinder;

the lifting inner cylinder is sleeved in the lifting outer cylinder and can perform lifting motion along the axis of the lifting outer cylinder, and the lifting inner cylinder comprises at least three side walls which are connected with each other;

each group of guide assemblies comprises a plurality of groups of guide mechanisms which are fixedly connected to the same plane of the vehicle lifting outer cylinder respectively, wherein the plane is perpendicular to the axis of the vehicle lifting outer cylinder, and each side wall of the vehicle lifting inner cylinder is correspondingly connected with one group of guide mechanisms respectively.

In some embodiments, the guide mechanism comprises:

the guide roller is arranged outside the side wall of the vehicle lifting inner cylinder, and the axis of the guide roller is vertical to the axis of the vehicle lifting inner cylinder;

the positioning seat is fixedly connected to the outer cylinder of the lifting vehicle;

one end of the guide screw rod is connected with the guide roller, the other end of the guide screw rod is connected with the positioning seat through threads, and the guide screw rod is perpendicular to the guide roller.

In some embodiments, the guide mechanism includes two lead screws, and the two lead screws are respectively connected to two ends of the guide roller.

In some embodiments, the guide mechanism further comprises a positioning sleeve, the positioning sleeve is connected to the positioning seat, the axis of the positioning sleeve is perpendicular to the guide roller, an internal thread is arranged in the positioning sleeve, and the guide screw is assembled in the positioning sleeve through the thread.

In some embodiments, the guiding mechanism further comprises:

a shaft seat arranged on the guide screw and assembled in one end of the positioning sleeve facing the guide roller;

the rolling bearings are connected to the shaft seats and sleeved at two ends of the guide roller;

and the locking nut is sleeved outside the guide screw rod and is connected outside one end, far away from the guide roller, of the positioning sleeve.

In some embodiments, the vehicle lifting device includes at least two sets of guide assemblies, and the guide assemblies of each set are sequentially arranged along the axial direction of the vehicle lifting inner cylinder.

In some embodiments, the vehicle lifting device further comprises:

the screw rod is arranged in the vehicle lifting outer cylinder along the axis of the vehicle lifting outer cylinder;

the working nut is sleeved outside the screw rod and is connected to the bottom of the inner cylinder of the lifting vehicle;

the protective nut is sleeved outside the screw rod and connected to the bottom of the working nut, and a gap is reserved between the protective nut and the working nut;

a monitoring sensor for monitoring the width of the gap.

In some embodiments, the vehicle lifting device further includes an upper limit sensor and a lower limit sensor respectively disposed at two ends of the outer cylinder of the vehicle lifting device.

The utility model also provides a frame platform truck equipment, including motor, reduction gear and at least one as above lift the car device, the motor pass through the reduction gear with it connects to lift the car device.

In some embodiments, the rack and trolley equipment includes two lifting devices, the speed reducer includes a first speed reducer and a second speed reducer, the motor is connected to the first speed reducer, each lifting device is connected to one second speed reducer, and the first speed reducer is connected to each second speed reducer through a telescopic universal joint.

(III) advantageous effects

The above technical scheme of the utility model following beneficial effect has:

the utility model discloses a lift car device lifts the car urceolus, lifts car inner tube and at least a set of direction subassembly through the adoption, solves current high bearing structure of automobile body at least and can not guarantee to have the defect of sufficient anti-buckling and anti-drop ability in the security at the drive automobile body lift with the support process. The lifting vehicle inner cylinder is sleeved in the lifting vehicle outer cylinder so as to be convenient for lifting motion along the axis of the lifting vehicle outer cylinder, and therefore the overall height of the lifting vehicle device is adjusted in real time; the inner lifting barrel comprises at least three side walls which are connected with each other, each group of guide components comprises a plurality of groups of guide mechanisms which are respectively and fixedly connected on the same plane of the outer lifting barrel, wherein the plane is vertical to the axis of the outer lifting barrel, each side wall of the inner lifting barrel is respectively and correspondingly connected with one group of guide mechanisms, so that the guide components are utilized to guide and limit the lifting of the inner lifting barrel on the same plane of the outer lifting barrel, and each side wall of each inner lifting barrel is correspondingly provided with one group of guide mechanisms, so that all the degrees of freedom of the inner lifting barrel are limited in the lifting motion process, except the lifting motion, the coaxiality between the lifting motion of the inner lifting barrel and a guide channel formed in the guide components can be improved, the lifting height of the inner lifting barrel can be adjusted in real time, and the guide components can be utilized to radially lock and limit the inner lifting barrel reaching any height, thereby improving the integral instability prevention and drop prevention capability of the vehicle lifting device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an assembly schematic diagram of a pallet truck apparatus according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a vehicle lifting device according to an embodiment of the present invention;

fig. 3 is a top cross-sectional view of a set of guide assemblies in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of the structure shown at A in FIG. 3;

fig. 5 is a partial schematic view of an inner structure of an inner cylinder of a lift truck according to an embodiment of the present invention.

Reference numerals:

1: a motor; 2: a first stage reducer; 3: a telescopic universal joint; 4: a second stage reducer; 5: lifting the outer cylinder; 6: lifting the inner cylinder of the vehicle; 7: a lower limit sensor; 8: an upper limit sensor; 9: a lead screw; 10: a working nut; 11: a protective nut; 12: a guide mechanism; 121: a guide roller; 122: a shaft seat; 123: a lead screw; 124: a positioning sleeve; 125: positioning seats; 126: a rolling bearing; 127: a retainer ring; 128: locking the nut; 13: a flat bond; 14: and monitoring the sensor.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, the meaning of "plurality" and "a number" means two or more unless otherwise specified. The terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, the present embodiment provides a vehicle lifting device and a rack truck apparatus. The car lifting device can adjust the lifting height in real time, accurately guide the lifting direction in the lifting process, and can also radially lock and limit the car lifting inner cylinder 6 reaching any height, so that the overall instability prevention and anti-falling capacity of the car lifting device is improved. The platform truck equipment comprises the truck lifting device, and at least two truck lifting devices can be synchronously driven by one set of driving system, so that the synchronous lifting work of a plurality of truck lifting points is ensured, and the height error of each truck lifting device can be controlled within a safe and reliable range.

Specifically, as shown in fig. 2, the vehicle lifting device according to the present embodiment is provided. This lift car device includes: the lift car outer cylinder 5, the lift car inner cylinder 6 and at least one group of guide assemblies at least overcome the defect that the existing car body height supporting structure cannot guarantee enough anti-instability and anti-falling capability in the safety during the process of driving the car body to lift and support. The vehicle lifting inner cylinder 6 is sleeved in the vehicle lifting outer cylinder 5 and can move up and down along the axis of the vehicle lifting outer cylinder 5, so that the overall height of the vehicle lifting device can be adjusted as required. The top of the vehicle lifting inner cylinder 6 can be connected with a platform for lifting the vehicle body, the vehicle lifting device can be arranged on any vehicle lifting point of the lifted vehicle body and is positioned at the bottom of the vehicle body, and the height of the vehicle body at the vehicle lifting point can be stably lifted or lowered through the lifting motion of the vehicle lifting inner cylinder 6 relative to the vehicle lifting outer cylinder 5. Preferably, the height of the platform at the top of the inner cylinder 6 of the lift truck is 1200mm to 1800mm relative to the ground.

As shown in fig. 3, the lift cylinder 6 includes a sidewall having at least three sides connected to each other, in other words, the cross section of the lift cylinder 6 is polygonal, at least triangular (i.e., triangular). In order to ensure the accurate guiding of the lifting direction in the lifting process of the lifting inner cylinder 6, each group of guiding components comprises a plurality of groups of guiding mechanisms 12 which are respectively and fixedly connected on the same plane of the lifting outer cylinder 5. The plane is perpendicular to the axis of the outer cylinder 5 of the lift car, namely perpendicular to the axis of the guide channel surrounded by the guide mechanisms 12, so that the coaxiality between the lifting inner cylinder 6 and the guide channel formed in the guide assembly in the lifting motion is improved, namely the stability of the lifting motion of the inner cylinder 6 of the lift car is improved. Each side wall of the inner lifting cylinder 6 is correspondingly connected with a set of guide mechanisms 12, in other words, the guide mechanisms 12 correspond to the side walls of the inner lifting cylinder 6 one by one, so that the degree of freedom of the side walls on the corresponding sides is limited by using each set of guide mechanisms 12. Because each group of guide mechanisms 12 are respectively arranged along the axial direction perpendicular to the vehicle lifting inner cylinder 6 and the vehicle lifting outer cylinder 5 from each side wall of the vehicle lifting inner cylinder 6, each side wall of the vehicle lifting inner cylinder 6 is subjected to centripetal (axial) limiting and force application by utilizing a plurality of groups of guide mechanisms 12 synchronously so as to drive the vehicle lifting inner cylinder 6 to be limited along each degree of freedom corresponding to each side wall of the vehicle lifting inner cylinder 6 on the same plane where each guide mechanism 12 is positioned in the lifting process, and simultaneously, the rotating motion freedom degree of the vehicle lifting inner cylinder 6 taking the axial direction as a rotating shaft is also limited by utilizing the synergistic effect of the plurality of groups of guide mechanisms 12, so that all the other degrees of freedom equipment limitations of the vehicle lifting inner cylinder 6 except the lifting motion can only accurately perform the lifting motion along the axial direction, and the service life of the device can be prolonged.

It can be understood that, in the present embodiment, a rectangle is used as an optimal solution for the cross-sectional shape perpendicular to the axial direction of the inner barrel 6 of the lift truck, that is, as shown in fig. 3. This is because the most accurate coaxiality exists between the axial direction of the guide channel and the lifting axial direction of the vehicle-lifting inner cylinder 6 in the process that the vehicle-lifting inner cylinder 6 with the rectangular cross section performs lifting motion in the guide channel surrounded by matching with each group of guide mechanisms 12. Specifically, the method comprises the following steps: four groups of guide mechanisms 12 are correspondingly arranged outside four side walls of the vehicle lifting inner cylinder 6 respectively, the four groups of guide mechanisms 12 respectively limit four degrees of freedom of the vehicle lifting inner cylinder 6 in the front, back, left and right directions on the same plane, and the four groups of guide mechanisms 12 are utilized to limit the degree of freedom of the rotational movement of the vehicle lifting inner cylinder 6, so that the absolute limit of the five degrees of freedom of the vehicle lifting inner cylinder 6 is completed.

It can be understood that the plane of each set of guide mechanisms 12 in the same set of guide assemblies is simply referred to as the cross section of the inner lift cylinder 6, and the cross section of the inner lift cylinder 6 is perpendicular to the axial direction of the inner lift cylinder 6.

It can be understood that, as shown in fig. 3, the cross section of the outer lift cylinder 5 is preferably set to be the same as that of the inner lift cylinder 6, so that the space utilization can be rationalized, specifically: on one hand, the coaxiality among the inner lifting barrel 6, the outer lifting barrel 5 and the guide channel can be more conveniently adjusted in the process of lifting the inner lifting barrel 6 in the outer lifting barrel 5; on the other hand, the number of the side walls of the outer cylinder 5 and the inner cylinder 6 of the lift car is the same, and the arranged positions correspond to each other front and back, so that a group of guide mechanisms 12 can be directly arranged on each side surface of the outer cylinder 5 of the lift car respectively, and the structural arrangement of a guide assembly is simplified.

It will be appreciated that the guide mechanism 12 is secured to the lift car canister 5 near the top as shown in figure 3. The preferable car lifting device comprises at least two groups of guide assemblies, and the guide assemblies are sequentially arranged along the axial direction of the car lifting inner cylinder 6, so that the axial length of a guide channel is increased, the coaxiality of the car lifting inner cylinder 6 in the lifting process is improved, and the limiting strength of the guide assemblies for limiting the counter shaft of the car lifting inner cylinder 6 is enhanced.

In a preferred embodiment, the guide mechanism 12 includes guide rollers 121, positioning seats 125, and lead screws 123.

As shown in fig. 4, the guide roller 121 is disposed outside the sidewall of the lift cylinder 6, and the axis of the guide roller 121 is perpendicular to the axis of the lift cylinder 6. The guide roller 121 is used for rolling along the side wall of the vehicle lifting inner cylinder 6 in the process of lifting the vehicle lifting inner cylinder 6. Preferably, the axial direction of the guide roller 121 is also parallel to the side wall of the corresponding side on the lift car inner cylinder 6, and the side surface of the guide roller 121 contacts with the side wall of the corresponding side on the lift car inner cylinder 6, so as to ensure that when the positioning mechanism limits the side wall of the corresponding side on the lift car inner cylinder 6, the force application contact position between the guide roller 121 and the side wall of the lift car inner cylinder 6 is line contact, the guide roller 121 rolls along with the lift car inner cylinder 6 in the lifting process, so that the relative motion between the guide roller 121 and the lift car inner cylinder 6 is generated, and the line contact force application contact position is changed into surface contact along with the line contact, so that the force application range of the guide roller 121 to the side wall of the lift car inner cylinder 6 is expanded.

It is to be understood that the above-mentioned side wall on the respective side of the lift drum 6 refers to the side wall on the lift drum 6 that is in contact with the guide roller 121.

As shown in fig. 4, the positioning seat 125 is fixedly connected to the lift outer cylinder 5 to ensure reliable connection between the positioning mechanism and the lift outer cylinder 5, and the lift outer cylinder 5 is used as a guiding and fixing reference structure of the guiding mechanism 12 to enhance the coaxiality between the lift outer cylinder 5 and the guiding channel in the guiding assembly.

As shown in fig. 4, one end of the guide screw 123 is connected with the guide roller 121, the other end of the guide screw 123 is connected with the positioning seat 125 through a thread, and the guide roller 121 can be driven to move along the radial direction of the lifting inner cylinder by screwing the guide screw 123, so that the magnitude of the thrust applied by the guide roller 121 to the side wall of the corresponding side of the lifting inner cylinder 6 is accurately controlled, and the limiting and guiding capabilities of the positioning mechanism are accurately controlled. And the guide screw 123 is perpendicular to the guide roller 121, so as to ensure that the thrust direction applied by the guide roller 121 to the side wall of the corresponding side of the vehicle lifting inner cylinder 6 is perpendicular to the axial direction of the vehicle lifting inner cylinder 6.

It can be understood that, in the process of the normal lifting movement of the lifting inner cylinder 6, only the side wall of the guide roller 121 needs to be driven to apply a thrust smaller than the limit value to the side wall of the corresponding side of the lifting inner cylinder 6. And in order to ensure the coaxiality between the lift inner cylinder 6 and the guide channel, the guide rollers 121 in each positioning mechanism are preferably driven to apply equal thrust values to the side walls of the corresponding side of the lift inner cylinder 6.

It can be understood that when the vehicle lifting inner cylinder 6 reaches the preset height and needs to be locked, the guide assembly can be used for applying radial thrust to the vehicle lifting inner cylinder 6 so as to relatively fix the position between the vehicle lifting inner cylinder 6 and the vehicle lifting outer cylinder 5, namely, the locking effect is achieved. Specifically, the guide screw 123 may be screwed to a limit value, so that the thrust value applied by the guide roller 121 to the side wall of the corresponding side of the vehicle lifting inner cylinder 6 is maximized, and the thrust value applied by the guide roller 121 in each positioning mechanism to the side wall of the corresponding side of the vehicle lifting inner cylinder 6 is ensured to be equal.

It will be appreciated that one or more lead screws 123 may be attached to the guide rollers 121. When one lead screw 123 is connected to the guide roller 121, the lead screw 123 is preferably connected to the center point of the guide roller 121 in the axial direction. When the guide roller 121 is connected with two guide screws 123, the two guide screws 123 are respectively connected to two ends of the guide roller 121, as shown in fig. 2, the structure is an optimal arrangement scheme with a simplified structure, which can ensure the thrust balance of the guide roller 121 and maximize the contact between the guide roller 121 and the side wall of the vehicle lifting inner cylinder 6. When three or more than three guide screws 123 are connected to the guide roller 121, the connection positions of the guide screws 123 and the guide roller 121 are respectively and uniformly distributed along the axial direction of the guide roller 121, so that the thrust applied to the guide roller 121 from each guide screw 123 can be uniformly distributed in the axial direction of the guide roller 121, and the thrust applied to the side wall of the corresponding side of the lifting inner cylinder 6 by the guide roller 121 is further ensured to be balanced.

In a more preferred embodiment, as shown in fig. 3 and 4, the guide mechanism 12 further includes a locating sleeve 124. The positioning sleeve 124 is connected to the positioning seat 125, and the axis of the positioning sleeve 124 is perpendicular to the guide roller 121, and the positioning sleeve 124 is used for providing guiding and limiting functions for the force application and assembly structure of the lead screw 123. Internal threads are arranged in the positioning sleeve 124, and the guide screw 123 is assembled in the positioning sleeve 124 through threads, so that the axial length of thread matching of the guide screw 123 can be increased, and the screwing accuracy of the guide screw 123 is further improved.

In a more preferred embodiment, as shown in FIG. 4, the guide mechanism 12 further includes a shaft seat 122, a rolling bearing 126, and a lock nut 128. The shaft seat 122 is provided on the lead screw 123 and is fitted in an end of the positioning sleeve 124 facing the guide roller 121. The rolling bearing 126 is connected to the shaft seat 122 and sleeved outside the guide roller 121, the guide roller 121 is supported by the rolling bearing 126, an inner ring of the rolling bearing 126 is sleeved outside the guide roller 121, and an outer ring of the rolling bearing 126 is assembled on the shaft seat 122, so that the connection relationship between the rolling guide roller 121 and the guide screw 123 is more reliable. A lock nut 128 is fitted over the lead screw 123 and is attached to the end of the positioning sleeve 124 remote from the guide roller 121.

It can be understood that, in order to prevent the axial play of the guide roller 121, a retainer ring 127 made of an elastic material is further fitted over at least one side of the guide roller 121 of the rolling bearing 126. Since the rolling bearings 126 are connected to both ends of the guide roller 121 in the present embodiment, the retainer rings 127 are provided on the sides of the two rolling bearings 126 facing the ends of the guide roller 121.

In a preferred embodiment, the vehicle lifting device further comprises a lifting drive mechanism. The lifting driving mechanism is arranged in the outer lifting car barrel 5 and is connected with the inner lifting car barrel 6 so as to drive the inner lifting car barrel 6 to do lifting motion relative to the outer lifting car barrel 5. The lifting driving mechanism is preferably configured with a self-locking mechanism to ensure that the lifting inner cylinder 6 can be relatively fixed with the lifting outer cylinder 5 after reaching a preset height, namely the self-locking mechanism can lock the lifting inner cylinder 6 on the lifting outer cylinder 5.

In the present embodiment, as shown in fig. 2, the elevation driving mechanism includes a lead screw 9 and a work nut 10. Lead screw 9 sets up in lifting the outer section of thick bamboo 5 of car along lifting the axis of outer section of thick bamboo 5, and work nut 10 suit is outside lead screw 9 to connecting in the bottom of lifting the car inner tube 6, lead screw 9 and work nut 10 constitute lead screw 9 nut pair jointly, and lead screw 9 can drive work nut 10 and vertically reciprocate along lead screw 9 when rotating, in order to drive and lift car inner tube 6 along the vertical lift of lead screw 9.

It can be understood that, in order to ensure that the coaxiality of the inner cylinder 6, the outer cylinder 5 and the guide channel meets the limit requirement, when the guide mechanism 12 is installed on the outer cylinder 5, the axial line of the guide channel formed by surrounding the guide rollers 121 of each group of guide mechanisms 12 with each other is ensured to be coaxial with the axial line of the screw 9.

In a more preferred embodiment, as shown in fig. 2 and 5, the lift drive mechanism further includes a protective nut 11 and a monitoring sensor 14. The protective nut 11 is sleeved outside the screw rod 9 and is positioned at the bottom of the working nut 10. The protection nut 11 is connected with the working nut 10 through a flat key 13, so that the protection nut 11 rotates along the screw rod 9 synchronously along with the working nut 10 to realize lifting. A gap is preset between the protection nut 11 and the working nut 10, and the monitoring sensor 14 is used to monitor the width (or spacing) of the gap. Because this lift actuating mechanism is at the working process, work nut 10 atress and protection nut 11 atress, so work nut 10 easily takes place wearing and tearing, can lead to foretell clearance to reduce when work nut 10 wearing and tearing, utilize monitoring sensor 14 response this interval in clearance to in time trigger the warning when work nut 10 reaches certain wearing and tearing value, in order to prevent work nut 10 because of wearing and tearing excessive trouble such as silk that appears, and then improve the security of lifting the car device, prevent to lift car inner tube 6 unstability and fall.

It will be appreciated that the monitoring sensor 14 is preferably mounted on the flat key 13 to facilitate maintenance replacement and adjustment of the monitoring range.

It will be appreciated that the minimum value of the above-mentioned gap is preferably set to 8mm to 10mm, most preferably to 9 mm. When the monitoring sensor 14 monitors that the gap is smaller than 9mm, an alarm can be triggered in time.

In a preferred embodiment, as shown in fig. 1, the vehicle lifting device further comprises an upper limit sensor 8 and a lower limit sensor 7 respectively arranged at two ends of the vehicle lifting outer cylinder 5, and a monitoring sensor 14 arranged on the working nut 10. The upper limit sensor 8 and the lower limit sensor 7 respectively limit the ascending limit value and the descending limit value of the inner lifting barrel 6 relative to the outer lifting barrel 5, when the upper limit sensor 8 and the lower limit sensor 7 sense that the ascending and descending movement of the inner lifting barrel 6 exceeds the limit values, the upper limit sensor and the lower limit sensor can be connected with a server to give an alarm, and the server is used for controlling the lifting driving mechanism to stop emergently so as to prevent danger caused by the exceeding of the ascending and descending movement of the inner lifting barrel 6.

Based on the above vehicle lifting device, the gantry vehicle apparatus of the present embodiment includes a motor 1, a speed reducer, and at least one vehicle lifting device as described above. The motor 1 is connected with the vehicle lifting device through a speed reducer. Specifically, the speed reducer is connected to a lifting driving mechanism of the vehicle lifting device, that is, the speed reducer is connected to the bottom of the screw rod 9 described in this embodiment, and the screw rod 9 is driven to rotate under the driving action of the motor 1 through the action of the speed reducer, so that the screw rod 9 and the working nut 10 rotate relatively, and the working nut 10 is driven to lift along the screw rod 9, thereby driving the lifting inner cylinder to perform lifting motion relative to the lifting outer cylinder.

As shown in fig. 1, the gantry vehicle apparatus according to the present embodiment includes two lifting devices. The two vehicle lifting devices are preferably respectively arranged at two vehicle lifting points at the bottom of the vehicle body. The speed reducer includes first reduction gear 2 and second reduction gear 4, and motor 1 is connected with first reduction gear 2, and every lifts the car device and is connected with a second reduction gear 4 respectively, and first reduction gear 2 is connected with each second reduction gear 4 respectively. The platform trolley equipment can simultaneously control two trolley lifting devices by using one set of driving system, and each trolley lifting device can adjust the lifting height in real time. The stand vehicle equipment can ensure stable lifting of the train body of the motor train unit, the lifting height can be synchronously adjusted, the height synchronization error between the two lifting points is effectively eliminated, and the stability, reliability and safety of the lifting of the train body are improved.

It can be understood that, in order to improve the flexibility of connection between the first reduction gear 2 and the second reduction gear 4, the first reduction gear 2 is connected to each of the second reduction gears 4 through a telescopic universal joint 3. When the device is used, the distance between the two vehicle lifting devices can be adjusted in real time by utilizing the telescopic universal joint according to the width or the length of the vehicle body.

It can be understood that the stand vehicle device described in this embodiment is equipped with the wireless control system and the remote control device, and the driving system of the stand vehicle device and the lifting height of each vehicle lifting device are remotely controlled by the remote control device, so that the problem that the support height of the vehicle height support structure is manually switched by a worker standing at the bottom of the vehicle body in a vehicle body lifting state, which causes great potential safety hazard in the operation process, can be avoided.

To sum up, the car lifting device of the embodiment at least solves the defect that the existing car body height supporting structure cannot ensure enough anti-instability and anti-falling capability in the safety during the driving of the car body lifting and supporting process by adopting the car lifting outer cylinder 5, the car lifting inner cylinder 6 and at least one group of guide components. The lifting inner cylinder 6 is sleeved in the lifting outer cylinder 5 so as to be convenient for lifting along the axis of the lifting outer cylinder 5, and thus the overall height of the lifting device is adjusted in real time; the inner lifting barrel 6 comprises at least three side walls which are connected with each other, each group of guide components comprises a plurality of groups of guide mechanisms 12 which are respectively and fixedly connected on the same plane of the outer lifting barrel 5, wherein the plane is vertical to the axis of the outer lifting barrel 5, each side wall of the inner lifting barrel 6 is respectively and correspondingly connected with one group of guide mechanisms 12, thus the guide components are utilized to guide and limit the lifting of the inner lifting barrel 6 on the same plane of the outer lifting barrel 5, and because each side wall of each inner lifting barrel 6 is correspondingly provided with one group of guide mechanisms 12, not only all the degrees of freedom of the inner lifting barrel 6 are limited in the lifting motion process, but also the coaxiality between the lifting motion of the inner lifting barrel 6 and a guide channel can be improved, the lifting height of the inner lifting barrel 6 can be adjusted in real time, and the inner lifting barrel 6 reaching any height can be radially locked and limited by the guide components, thereby improving the integral instability prevention and drop prevention capability of the vehicle lifting device.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A vehicle lifting device, comprising:

lifting the outer cylinder;

2. The lift truck assembly of claim 1 wherein said guide mechanism comprises:

3. The vehicle lifting device according to claim 2, wherein the guide mechanism comprises two guide screws, and the two guide screws are respectively connected to two ends of the guide roller.

4. The lift truck assembly of claim 2 wherein said guide mechanism further includes a retainer sleeve attached to said retainer seat and having an axis perpendicular to said guide roller, said retainer sleeve having internal threads disposed therein, said lead screw being threadably mounted in said retainer sleeve.

5. The lift truck assembly of claim 4 wherein said guide mechanism further comprises:

6. The lift device according to any one of claims 1 to 5, wherein the lift device comprises at least two sets of guide assemblies, and the guide assemblies of each set are sequentially arranged along the axial direction of the lift inner cylinder.

7. The lift truck device according to any one of claims 1 to 5, further comprising:

a monitoring sensor for monitoring the width of the gap.

8. The lift truck device according to claim 7, further comprising an upper limit sensor and a lower limit sensor respectively disposed at both ends of the lift truck outer tube.

9. A trolley installation comprising an electric motor, a speed reducer and at least one lifting device as claimed in any one of claims 1 to 8, the electric motor being connected to the lifting device via the speed reducer.

10. The gantry vehicle apparatus of claim 9, wherein the gantry vehicle apparatus includes two of the vehicle lifting devices, the speed reducers include a first speed reducer and a second speed reducer, the motor is connected to the first speed reducer, one of the second speed reducers is connected to each of the vehicle lifting devices, and the first speed reducer is connected to each of the second speed reducers through a telescopic universal joint.