A lifting measuring device and a vehicle lifting machine

Abstract

This invention belongs to the field of railway locomotive and rolling stock maintenance technology, and discloses a lifting and measuring device and a lifting machine. The lifting and measuring device includes a drive assembly, a weight transmission assembly, and two weight measuring assemblies. The weight transmission assembly includes a crossbeam connected to the output end of the drive assembly. The lifting assembly includes two parallel and spaced-apart brackets. The two weight measuring assemblies are mounted one-to-one on the two brackets. Each weight measuring assembly includes a support base and a weight sensor. The two support bases are rotatably fitted onto the crossbeam. When the drive assembly lifts the crossbeam, it drives the support bases to abut against the weight sensors. This lifting and measuring device effectively avoids the problem of inaccurate measurement of dynamic changes in the pressure point when the measuring device is placed in the lifting head. It has a simple structure, stable force measurement, and can accurately measure the lifting capacity of the lifting head.

Description

Technical Field

[0001] The invention relates to the technical field of railway locomotive and vehicle maintenance, and in particular to a lifting and measuring device and a vehicle lifting machine. Background Art

[0002] Railway rolling stock includes passenger, freight and engineering vehicles and trains. Calculated by the amount of fuel consumed per ton-kilometer transported, railway rolling stock is the land transportation tool with the least energy consumption. In order to maximize the economic benefits of locomotives, railway companies in various countries have formulated systems for railway vehicle operation management and locomotive maintenance. In order to ensure the safety of rail transportation, railway locomotives need to be inspected after running for a period of time or a certain mileage. After the railway locomotive enters the maintenance workshop, it is usually necessary to lift the vehicle to a certain height by a car crane so that the underbody parts can be inspected.

[0003] The vehicle lifting machine belongs to the lifting operation equipment, which is divided into mobile vehicle lifting machines and fixed vehicle lifting machines. The mobile vehicle lifting machine consists of multiple sets of mobile vehicle lifting unit groups, a main control cabinet, a mobile operating console and a joystick. Each vehicle lifting unit group consists of four vehicle lifting machines and can lift one vehicle. Each vehicle lifting unit group can be operated individually, or the entire set of mobile vehicle lifting units can be synchronously lifted through the operating console. The mobile vehicle lifting machine can simultaneously lift multiple sections of uncoupled railway locomotive train groups, and conveniently inspect, dismantle, repair, maintain and replace the mechanical, electrical, pneumatic devices and pipelines and other parts of the lower part of the railway locomotive body. Railway locomotive vehicles usually weigh tens of tons, and the lifting load of the vehicle lifting machine is very large. The realization of the real-time and accurate weighing function of the vehicle lifting machine is of great significance to ensure the normal and safe use of the vehicle lifting machine and monitor the stability of the simultaneous lifting of vehicles by multiple vehicle lifting machines. It is also an important technical guarantee measure for the safety of vehicle lifting equipment and personnel.

[0004] At present, there are two methods to measure the lifting weight of the head of a car-lifting machine. One is to use a spoke-type annular weighing sensor. The spoke-type annular weighing sensor is placed between the working nut and the nut coupling seat. When the working nut lifts the bracket, the weighing sensor bears the lifting load transmitted from the bracket to the head. However, since the load of the car-lifting machine is biased to one side of the head, the column and the bracket are torsionally deformed, and the axis of the working nut and the nut coupling seat on the bracket are deflected during the lifting process. It cannot be guaranteed that the weighing sensor is in stable contact with the lifting plane of the working nut. The sensor is in an abnormal use state and the weighing accuracy is greatly reduced. At the same time, due to the synchronous operation of multiple car-lifting machines, there is a synchronization error in the car-lifting process, which causes dynamic changes when the sensor contacts the working nut. It can be seen that the precise weighing function of the existing mobile car-lifting machine has not been effectively realized, and the weighing output signal is neither accurate nor stable, making it difficult to play the expected weighing function.

[0005] The second method is to install the weighing device directly in the head support. When the head support rises to the locomotive's vehicle seat surface, the pressure sensor on the head support is compressed to measure the weight. However, in order for the weighing sensor to obtain measurement accuracy, the probe must withstand positive load pressure. The head support is a structural component that directly bears the lifting load. The contact state between the head support and the vehicle lifting pad is uncertain after the lifting adjustment is completed. At the same time, it is affected by the synchronization errors of multiple vehicle lifting machines, and the pressure point of the head support will also change dynamically. Therefore, it is difficult to obtain accurate and stable weighing values ​​by placing a sensor at the head support. If the measuring device is installed in the head support arm, since the head support arm is a cantilever beam structure, it is mainly subjected to the bending moment and undergoes downward deflection deformation, and the force application point of the head support is uncertain, so indirectly measuring the bending moment on the head support arm cannot accurately measure the lifting capacity of the head support.

[0006] Therefore, there is an urgent need for a lifting and measuring device and a vehicle lifting machine to solve the above problems. Summary of the invention

[0007] According to one aspect of the present invention, there is provided a lifting measurement device having a simple structure, capable of accurately weighing the lifting weight of a crane, and ensuring the stability of the lifting measurement device.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A lifting measurement device is used to weigh and measure a lifting component, including a driving component, a weight transfer component and two weight measurement components, wherein the weight transfer component includes a cross beam, and the cross beam is connected to the output end of the driving component, and the lifting component includes two parallel and spaced brackets, and the two weight measurement components are installed on the two brackets one by one, and the weight measurement component includes a support seat and a weight sensor, and the two support seats are rotatably mounted on the cross beam. When the driving component lifts the cross beam, it can drive the support seat to abut against the weight sensor.

[0010] Optionally, the weight transfer assembly further comprises a coupling seat, the coupling seat is sleeved on the rotating shaft of the driving assembly and connected to the output end of the driving assembly, and the crossbeam is fixedly connected to the coupling seat.

[0011] Optionally, the weight measurement assembly also includes two mounting seat plates, one mounting seat plate is fixedly connected to each of the brackets, the mounting seat plates are provided with a slideway extending along a first direction, the first direction is parallel to the lifting direction of the crossbeam, the weight sensor is fixed in the slideway, and the support seat is slidably installed in the slideway along the first direction.

[0012] Optionally, a mounting hole is provided on the bracket, and a boss is provided on one side of the mounting seat plate around the slideway, and the boss is mounted in the mounting hole.

[0013] Optionally, the weight measurement assembly further includes a washer, which is clamped between the crossbeam and the support seat.

[0014] Optionally, the lifting measurement device also includes a sliding assembly, which includes a sliding seat. The sliding seat is located between the two brackets and is respectively slidably connected to the two brackets along a second direction, wherein the second direction is perpendicular to the lifting direction of the cross beam. An avoidance hole is provided on the sliding seat, and the cross beam is movably inserted into the avoidance hole.

[0015] Optionally, the lifting assembly further comprises a plurality of supporting rollers, the rotating shafts of the supporting rollers are fixedly connected to the bracket, and the rolling surfaces of the supporting rollers abut against and support the sliding seat.

[0016] Optionally, the lifting assembly also includes a plurality of limiting rollers, the rotating shafts of the limiting rollers are fixedly connected to the bracket, the supporting rollers and the limiting rollers on the same bracket are arranged to form a sliding channel extending along the second direction, and the sliding seat is provided with a sliding ridge, and the sliding ridge is slidably inserted in the sliding channel.

[0017] Optionally, the lifting assembly further includes a supporting head, and the supporting head is fixedly connected to the sliding seat.

[0018] According to another aspect of the present invention, there is provided a vehicle lifting machine, comprising the lifting measurement device described in any of the above schemes.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a lifting measurement device for weighing and measuring a lifting assembly, including a driving assembly, a weight transfer assembly and two weight measurement assemblies. The weight transfer assembly includes a cross beam connected to the output end of the driving assembly, and the weight measurement assembly includes a support seat and a weight sensor. The two weight measurement assemblies are mounted on two brackets of the lifting assembly in a one-to-one correspondence. The two support seats are rotatably sleeved on the cross beam. When the driving assembly lifts the cross beam, it can drive the support seat to abut against the weight sensor to achieve weight transfer. The lifting measurement device solves the problems of inaccurate force measurement and unstable measurement process caused by the deformation and deflection of the nut axis relative to the spoke-type sensor in the prior art, and effectively avoids the problem of being unable to accurately measure when the measuring device is set in the support head or the support head arm due to the dynamic change of the pressure point. The lifting measurement device has a simple structure, can accurately measure the lifting weight of the support head, and has stable force measurement.

[0021] The vehicle lifting machine provided by the present invention is equipped with the weight measuring device, which can accurately measure the lifting weight of the supporting head while lifting the vehicle, thereby ensuring the stability of the force measuring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of a lifting measurement device provided by an embodiment of the present invention;

[0023] Figure 2 It is a left view of the lifting measurement device provided by an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of a weight measurement component provided by an embodiment of the present invention.

[0025] In the figure:

[0026] 100, bracket; 110, supporting roller; 120, limiting roller; 130, supporting head;

[0027] 200, weight transfer assembly; 210, cross arm beam; 220, coupling seat;

[0028] 300, weight measurement assembly; 310, support seat; 311, bearing hole; 320, weight sensor; 330, mounting seat plate; 331, slideway; 340, washer;

[0029] 400, sliding assembly; 410, sliding seat; 420, avoidance hole; 430, sliding ridge. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] Figure 1 The figure shows a front view of a lifting measurement device provided by an embodiment of the present invention. Figure 2 The left side view of the lifting measurement device provided by the embodiment of the present invention is shown. Figure 1 and Figure 2 The lifting measuring device is installed on the crane and is used to weigh and measure the lifting component. The lifting measuring device includes a weight transfer component 200 and a weight measurement component 300. The weight transfer component 200 transfers the weight load of the lifting component to the weight measurement component 300, and the weight measurement component 300 measures the specific value of the load.

[0035] Continue to refer to Figure 1 and Figure 2 The lifting assembly includes two brackets 100, a supporting head 130 and two sliding assemblies 400. The bracket 100 includes two bracket side plates that are parallel to each other and spaced apart, and the two bracket side plates are arranged to form a guide channel. The two sliding assemblies 400 are respectively slidably connected to the two bracket side plates and can slide in the guide channel. The supporting head 130 is clamped at the ends of the two sliding assemblies 400. When the sliding assembly 400 slides in the guide channel, the horizontal position of the supporting head 130 can be adjusted.

[0036] Specifically, the lifting assembly also includes a plurality of supporting rollers 110 and a plurality of limiting rollers 120. The two supporting rollers 110 and the two limiting rollers 120 form a roller group. The lifting measurement device includes two roller groups, and the two roller groups are respectively installed on the inner sides of the two bracket side plates. The supporting rollers 110 and the limiting rollers 120 of the same group are distributed on the bracket side plates in a rectangular array, and the two supporting rollers 110 are located below the two limiting rollers 120. The supporting rollers 110 located above and the limiting rollers 120 located below are arranged to form a sliding channel extending along a second direction, and the second direction is consistent with the extension direction of the guide channel between the two bracket side plates. A part of the sliding assembly 400 can be inserted into the sliding channel, and the sliding assembly 400 can be slidable under the rolling action of the supporting rollers 110 and the limiting rollers 120.

[0037] Specifically, the rotation axis of the support roller 110 is fixedly connected to the bracket side plate, and the support roller 110 is a conventional cylindrical roller, and its rolling surface can abut against and support a part of the sliding assembly 400. The limiting roller 120 has the same shape as the support roller 110, and its rotation axis is also fixedly connected to the bracket side plate, and can cooperate with the support roller 110 to limit the sliding direction of the sliding assembly 400.

[0038] Continue to refer to Figure 1 and Figure 2 The sliding assembly 400 includes a sliding seat 410 and a sliding ridge 430. The sliding seat 410 is a metal side plate, which is parallel to the bracket side plate and is located between the two bracket side plates. The sliding ridge 430 is vertically fixed to the bottom of the metal side plate and forms a T-shaped sliding assembly 400 with the metal side plate. The sliding ridge 430 is slidably inserted in the sliding channel, and when sliding therein, it can drive the entire sliding assembly 400 to move along the second direction in the guide channel.

[0039] Specifically, the supporting head 130 is fixedly connected between the two sliding seats 410 and serves as a component that directly contacts the railway locomotive vehicle during the lifting operation.

[0040] Continue to refer to Figure 1 and Figure 2 The driving assembly includes a lead screw and a lifting nut. The lifting nut is screwed to the lead screw, which is connected to the motor drive device and can rotate under the drive of the motor. The nut is connected to the weight transfer assembly 200. When the lead screw rotates, it can drive the lifting nut to move in the vertical direction on the lead screw.

[0041] Specifically, the weight transfer assembly 200 includes a cross beam 210 and a coupling seat 220. The coupling seat 220 is sleeved on the lead screw of the driving assembly and fixedly connected to the lifting nut, and can follow the lifting nut to move on the lead screw. The cross beam 210 is divided into two sections. The two sections of the cross beam 210 are arranged along the same straight line and are respectively vertically fixed to the opposite sides of the coupling seat 220. One end away from the coupling seat 220 is respectively connected to a weight measuring assembly 300. The lifting direction of the cross beam 210 is perpendicular to the second direction. The total lifting weight of the lifting nut can be transferred to the two weight measuring assemblies 300, and the total lifting weight is obtained by adding the lifting weights of the two weight measuring assemblies 300.

[0042] Preferably, a avoidance hole 420 is provided on the sliding seat 410 at a position directly opposite to the cross beam 210. The cross beam 210 has a smaller diameter than the avoidance hole 420 and can be movably arranged in the avoidance hole 420. The opening of the avoidance hole 420 not only retains the original lifting and sliding functions of the sliding seat 410, but also does not hinder the cross beam 210 from transferring weight, making the structure of the entire lifting and measuring device more compact.

[0043] Specifically, the avoidance hole 420 can be a waist-shaped hole, a rectangular hole or an elliptical hole. The length of the avoidance hole 420 is greater than the distance between two supporting rollers 110 in the same roller group. The avoidance hole 420 can expand the sliding range of the sliding assembly 400, can be suitable for lifting operations in different working conditions, and enhance the practicality of the lifting measurement device.

[0044] Figure 3 FIG. 2 is a schematic diagram showing the structure of a weight measurement component provided by an embodiment of the present invention. Figure 1 and Figure 2 The two weight measuring components 300 are mounted on the two bracket side plates in a one-to-one correspondence. The bracket side plates of the bracket 100 are provided with mounting holes, and the weight measuring components 300 can be mounted in the mounting holes.

[0045] Reference Figure 3 The weight measurement assembly 300 includes a support seat 310, a weight sensor 320, a mounting seat plate 330 and a washer 340. Each bracket side plate is fixedly connected with a mounting seat plate 330. The mounting seat plate 330 is provided with a slideway 331 extending along a first direction, and the first direction is parallel to the lifting direction of the cross beam 210. The weight sensor 320 is fixed in the slideway 331, and the support seat 310 is slidably installed in the slideway 331 along the first direction.

[0046] Specifically, the mounting seat plate 330 is a rounded rectangular shape, and a boss is provided on one side around the slideway 331. The boss can be clamped in the clamping hole on the bracket side plate, and is fixed to the bracket side plate by fastening bolts at the four corners of the mounting seat plate 330.

[0047] More specifically, the shape of the slideway 331 matches the support seat 310 and the weight sensor 320. The weight sensor 320 is fixed to the top of the slideway 331 with three fixing bolts. The support seat 310 is slidably installed at the bottom of the slideway 331. The pressure sensing device on the weight sensor 320 faces the upper top surface of the support seat 310. When there is no heavy load on the lifting nut, the cross arm beam 210 has no lifting effect and will not abut against the support seat 310. At this time, the support seat 310 and the pressure sensing device of the weight sensor 320 have no contact or only contact without pressure.

[0048] More specifically, the two support seats 310 are provided with bearing holes 311 respectively, and the cross beam 210 can be inserted into the bearing holes 311 so that the support seat 310 is rotatably sleeved on the cross beam 210. When the lifting assembly is in effect, the driving assembly starts and lifts the lifting assembly, and the cross beam 210 is lifted immediately. The cross beam 210 is connected to the lifting nut and the weight measurement assembly 300, and can drive the support seat 310 to press against the pressure sensing device of the weight sensor 320 to achieve the measurement of the lifting weight.

[0049] The cross beam 210 in this embodiment is a rotating shaft structure, and its cooperation with the support seat 310 is equivalent to the cooperation between the rotating shaft and the bearing. The cross beam 210 in the support seat 310 is only subjected to the vertical reaction force from the support seat 310, but not to the bending moment. A sliding pair is formed at the connection between the support seat 310 and the inner wall of the slideway 331, so that the pressure sensing device of the weight sensor 320 is only subjected to the vertical lifting pressure from the support seat 310, and the measurement result is accurate and stable.

[0050] More specifically, the washer 340 is sleeved on the cross arm beam 210 and sandwiched between the cross arm beam 210 and the hole wall of the bearing hole 311. The washer 340 can protect the cross arm beam 210, reduce its direct contact with the hole wall of the bearing hole 311, and play a buffering role.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lifting measurement device for weighing and measuring a lifting component, characterized in that: include: Drive components; A weight transfer assembly (200), the weight transfer assembly (200) comprising a cross beam (210), the cross beam (210) being connected to an output end of the drive assembly; Two weight measurement components (300), the lifting component comprising two brackets (100) arranged in parallel and at intervals, the two weight measurement components (300) being mounted on the two brackets (100) in a one-to-one correspondence, the weight measurement component (300) comprising a support seat (310) and a weight sensor (320), the two support seats (310) being rotatably sleeved on the crossbeam (210), and the driving component being able to drive the support seat (310) to abut against the weight sensor (320) when lifting the crossbeam (210); The weight transfer assembly (200) further comprises a coupling seat (220), wherein the coupling seat (220) is sleeved on the rotating shaft of the driving assembly and connected to the output end of the driving assembly, and the crossbeam (210) is fixedly connected to the coupling seat (220); The weight measurement assembly (300) further comprises a washer (340), wherein the washer (340) is sandwiched between the cross arm beam (210) and the support seat (310).

2. The lifting measurement device according to claim 1, characterized in that: The weight measurement assembly (300) further comprises two mounting seat plates (330), one mounting seat plate (330) being fixedly connected to each of the brackets (100), the mounting seat plates (330) being provided with a slideway (331) extending along a first direction, the first direction being parallel to the lifting direction of the crossbeam (210), the weight sensor (320) being fixed in the slideway (331), and the support seat (310) being slidably mounted in the slideway (331) along the first direction.

3. The lifting measurement device according to claim 2, characterized in that: The bracket (100) is provided with a mounting hole, and one side of the mounting seat plate (330) is provided with a boss around the slideway (331), and the boss is mounted in the mounting hole.

4. The lifting measurement device according to claim 1, characterized in that: The invention also includes a sliding assembly (400), wherein the sliding assembly (400) includes a sliding seat (410), wherein the sliding seat (410) is located between the two brackets (100) and is respectively connected to the two brackets (100) in a sliding manner along a second direction, wherein the second direction is perpendicular to the lifting direction of the cross beam (210), and an avoidance hole (420) is provided on the sliding seat (410), and the cross beam (210) is movably inserted into the avoidance hole (420).

5. The lifting measurement device according to claim 4, characterized in that: The lifting assembly further comprises a plurality of supporting rollers (110), the rotating shafts of the supporting rollers (110) being fixedly connected to the bracket (100), and the rolling surfaces of the supporting rollers (110) being against and supporting the sliding seat (410).

6. The lifting measurement device according to claim 5, characterized in that: The lifting assembly also includes a plurality of limiting rollers (120), the rotating shafts of the limiting rollers (120) are fixedly connected to the bracket (100), the supporting rollers (110) and the limiting rollers (120) on the same bracket (100) are arranged to form a sliding channel extending along the second direction, and the sliding seat (410) is provided with a sliding ridge (430), and the sliding ridge (430) is slidably inserted in the sliding channel.

7. The lifting measurement device according to claim 5, characterized in that: The lifting assembly further comprises a supporting head (130), and the supporting head (130) is fixedly connected to the sliding seat (410).

8. A vehicle lifting machine, characterized in that: The invention comprises a lifting measurement device as described in any one of claims 1 to 7.

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