CN212832670U - Head supporting device and car lifting jack - Google Patents

Abstract

The utility model relates to a car lifting jack field discloses a hold in palm first device and car lifting jack. The head supporting device comprises a fixing seat, a supporting component, a leveling component and a distance measuring module. The supporting component comprises a movable shaft and a supporting frame, the movable shaft penetrates through the fixing seat and is erected in the sliding groove, the supporting frame is arranged in the sliding groove in a sliding mode and is connected to the movable shaft in a rotating mode, the leveling component comprises a first elastic component and a second elastic component which are arranged at intervals, the supporting frame adjusts the self levelness through elastic reaction force generated by the first elastic component or the second elastic component which are located on two sides of the movable shaft, and the distance measuring module is arranged on the fixing seat and is used for detecting whether the movable shaft falls to a preset position or not. The car lifting jack comprises the head supporting device. The utility model discloses dismouting supporting component and fixing base can be fast conveniently, easily maintain whole support head device, adopt non-contact detection mode simultaneously, have reduced the fault rate of support head device, have improved the maintenance efficiency of car lifting jack.

Description

Head supporting device and car lifting jack

Technical Field

The utility model relates to a car lifting jack field especially relates to a hold in palm first device and car lifting jack.

Background

After the locomotive runs for a period of time, in order to ensure the safe running of the vehicles, wheel sets in a bogie and other parts at the bottom of the locomotive need to be overhauled, and at the moment, a plurality of matched vehicle lifting machines are needed to lift the whole train of marshalled vehicles to a certain height so as to overhaul the vehicles. When the car lifting jack is used, four car lifting devices are generally used as a group, four lifting base plates of a car body of the car are lifted, and the car body needs to be ensured to be horizontal in the lifting process.

The head supporting device of the existing car lifting jack generally adopts a welding box type structure with a pressure sensor, the failure rate of the pressure sensor is high, once the failure occurs, the pressure display is inaccurate, so that the overhauling operation is influenced, and the welding box type structure is not easy to disassemble and is inconvenient to maintain and replace the failed pressure sensor.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model aims to provide a hold in palm first device and car lifting jack reduces the fault rate, conveniently dismantles the maintenance.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a header apparatus comprising:

the fixing seat is internally provided with a sliding chute;

the support assembly comprises a movable shaft and a support frame, the movable shaft penetrates through the fixed seat and is erected in the sliding groove, and the support frame is arranged in the sliding groove in a sliding mode and is connected to the movable shaft in a rotating mode;

the leveling assembly comprises a first elastic assembly and a second elastic assembly which are arranged at intervals, the first elastic assembly and the second elastic assembly are respectively clamped between the supporting frame and the fixed seat, and the movable shaft is positioned between the first elastic assembly and the second elastic assembly;

and the distance measuring module is arranged on the fixed seat and used for detecting whether the movable shaft falls to a preset position or not.

As the utility model discloses a preferred scheme of head supporting device, first elastic component with second elastic component all includes guide post, elastic component and butt, the one end of guide post with the support frame butt, other end activity runs through the fixing base, the elastic component with the butt all overlaps and locates on the guide post, elastic component one end with the fixing base butt, the other end passes through the butt with the support frame butt.

As the utility model discloses a preferred scheme of first device of support, the support frame includes the leveling board, the leveling board is located the top of loose axle, be provided with spherical groove on the leveling board, the guide post stretches into one end in the fixing base is provided with spherical structure, spherical structure rotate set up in the spherical groove.

As the utility model discloses a preferred scheme of support head device, the butt piece is sleeve structure, the elastic component stretches into in the sleeve structure, and with sleeve structure's inside wall butt, be provided with the locating part on the guide post, the locating part with sleeve structure towards the terminal surface of leveling board pastes and leans on.

As the utility model discloses a support preferred scheme of head device, the guide post stretches out the one end of fixing base is provided with the stop part, the stop part can with the lateral wall of fixing base pastes and leans on.

As the utility model discloses a preferred scheme of support head device, be provided with spacing through-hole on the fixing base, the loose axle is worn to locate in the spacing through-hole, the periphery wall of loose axle can with the internal perisporium of spacing through-hole pastes and leans on, the one end of loose axle is provided with the shaft shoulder, the shaft shoulder with one side of fixing base is pasted and is leaned on, the other end of loose axle is provided with the end plate, the end plate with the opposite side of fixing base is pasted and is leaned on.

As the utility model discloses a first device of support's preferred scheme, ranging module is proximity switch, be provided with the response piece on the periphery wall of loose axle, through proximity switch detects the distance of response piece, in order to detect whether the loose axle drops to preset the position.

As the utility model discloses a preferred scheme of first device holds in palm, be provided with the mounting bracket on the fixing base, proximity switch wears to locate on the mounting bracket, proximity switch is last to be connected with two nuts, the mounting bracket clamp is located two between the nut.

As the utility model discloses a preferred scheme of holding in palm head device, supporting component still includes holds in the palm the headstock, hold in the palm headstock fixed connection in on the support frame, hold in the palm and be provided with anti-skidding backing plate on the headstock.

A car lifting jack comprises the head supporting device.

The utility model has the advantages that:

the utility model provides a hold in palm first device and car lifting jack sets up the spout in the fixing base, sets up the support frame in the spout with sliding, runs through fixing base and support frame simultaneously with the loose axle, adopts this kind of nested connection structure, can dismouting supporting component and fixing base fast and conveniently, easily maintains whole hold in the palm first device; the supporting frame is rotatably connected to the movable shaft, the levelness of the supporting frame is adjusted through the first elastic assembly and the second elastic assembly which are positioned on the two sides of the movable shaft, when the whole head supporting device is in unbalance loading, the supporting frame deflects around the movable shaft and can compress the first elastic assembly or the second elastic assembly, and the first elastic assembly or the second elastic assembly generates elastic reaction force, so that the supporting frame is kept as horizontal as possible, and the safety of the car lifting machine is improved; when the car lifting jack lifts the car body (also can be a high-speed rail, a motor train unit and other urban rail transit vehicles), the support frame compresses the first elastic assembly and the second elastic assembly under the action of pressure, and drives the movable shaft to slide downwards in the fixing seat, whether the movable shaft falls to a preset position is detected through the distance measuring module, whether synchronous lifting operation of the car body can be carried out is determined, compared with a non-contact detection mode which adopts a contact pressure sensor in the prior art, the fault rate of the head supporting device is reduced, and the overhauling efficiency of the car lifting jack is improved.

Drawings

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

Fig. 1 is a schematic structural diagram of a head supporting device according to an embodiment of the present invention;

fig. 2 is a sectional view taken along a-a of fig. 1.

In the figure:

1-a fixed seat; 2-a support assembly; 3-a first elastic component; 4-a second elastic component; 5-a ranging module;

11-a chute; 12-a limiting through hole; 13-a mounting frame;

21-a movable shaft; 22-a support frame; 221-leveling plate; 23-a head supporting frame; 24-antiskid backing plate;

211-shoulder; 212-end plate; 213-bolt;

31-a guide post; 311-spherical structure; 32-an elastic member; 33-an abutment; 34-a stop; 35-a stop;

51-a proximity switch; 52-a nut;

100-arm plate.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, 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. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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 and fig. 2, the present embodiment provides a head supporting device, which can be used in lifting operation of a car lifting jack, and the head supporting device includes a fixing base 1, a supporting component 2, a leveling component and a distance measuring module 5, wherein a chute 11 (shown in fig. 2) is disposed in the fixing base 1, the supporting component 2 includes a movable shaft 21 and a supporting frame 22, the movable shaft 21 penetrates through the fixing base 1 and is erected in the chute 11, and the supporting frame 22 is slidably disposed in the chute 11 and is rotatably connected to the movable shaft 21. By adopting the nested connecting structure, the supporting component 2 and the fixed seat 1 can be quickly and conveniently disassembled and assembled, and the whole head supporting device is easy to maintain.

In this embodiment, in order to ensure that the movable shaft 21 can float within a certain range along the circumferential direction, optionally, the fixing base 1 is provided with the limiting through hole 12, the movable shaft 21 is disposed in the limiting through hole 12, the outer circumferential wall of the movable shaft 21 can be attached to the inner circumferential wall of the limiting through hole 12, one end of the movable shaft 21 is provided with a shoulder 211, the shoulder 211 is attached to one side of the fixing base 1, the other end of the movable shaft 21 is provided with an end plate 212, the end plate 212 is attached to the other side of the fixing base 1, the fixing base 1 is clamped through the shoulder 211 and the end plate 212, the movable shaft 21 is axially limited, and the movable shaft 21 is prevented from moving. In order to facilitate the detachment of the movable shaft 21, optionally, two threaded holes are provided on the movable shaft 21, two bolts are provided on the end plate 212, and the detachable connection between the end plate 212 and the movable shaft 21 is achieved by the two bolts penetrating through the end plate 212 and screwing into the two threaded holes of the movable shaft 21.

The leveling assembly comprises a first elastic assembly 3 and a second elastic assembly 4 which are arranged at intervals, the first elastic assembly 3 and the second elastic assembly 4 are respectively clamped between the supporting frame 22 and the fixing base 1, the movable shaft 21 is located between the first elastic assembly 3 and the second elastic assembly 4, and the distance measuring module 5 is arranged on the fixing base 1 and used for detecting whether the movable shaft 21 falls to a preset position or not.

When the car lifting jack lifts a car body of a locomotive (also can be a high-speed rail, a motor train unit and other urban rail transit vehicles), the support frame 22 compresses the first elastic component 3 and the second elastic component 4 under the action of pressure and drives the movable shaft 21 to slide downwards in the fixing seat 1, whether the movable shaft 21 falls to a preset position is detected through the distance measuring module 5, whether synchronous lifting operation of the car body can be carried out is determined, compared with a non-contact detection mode which adopts a contact pressure sensor in the prior art, the fault rate of the head supporting device is reduced, and the overhauling efficiency of the car lifting jack is improved. In-process that descends at support frame 22 and loose axle 21, because support frame 22 rotates to be connected on loose axle 21, and adjust the levelness of self through first elastic component 3 and the second elastic component 4 that is located the loose axle 21 both sides, consequently, when whole head device unbalance loading that holds in the palm, support frame 22 can deflect around loose axle 21, compress first elastic component 3 or second elastic component 4 simultaneously, first elastic component 3 or second elastic component 4 produce elasticity reaction force, and then make support frame 22 keep the level as far as possible, in order to guarantee that the automobile body keeps the level at synchronous lifting process, the security that the car lifting jack overhauld the operation has been improved.

In this embodiment, optionally, the first elastic assembly 3 and the second elastic assembly 4 each include a guide post 31, an elastic element 32, and an abutting element 33, one end of the guide post 31 abuts against the supporting frame 22, the other end of the guide post movably penetrates through the fixing base 1, the elastic element 32 and the abutting element 33 are both sleeved on the guide post 31, one end of the elastic element 32 abuts against the fixing base 1, and the other end of the elastic element 32 abuts against the supporting frame 22 through the abutting element 33, so that the elastic element 32 is in a compressed state. When the support frame 22 is pressed, the guide post 31 is driven to move downwards, the elastic member 32 is compressed by the abutting member 33, and the elastic member 32 generates an elastic reaction force to support the support frame 22.

Optionally, the supporting frame 22 includes a leveling plate 221, the leveling plate 221 is located above the movable shaft 21, a spherical groove is provided on the leveling plate 221, a spherical structure 311 is provided at one end of the guiding column 31 extending into the fixing base 1, and the spherical structure 311 is rotatably disposed in the spherical groove. When the supporting frame 22 deflects around the movable shaft 21, the spherical structure 311 of the guiding column 31 is in running fit with the spherical groove of the leveling plate 221, so that the leveling plate 221 is always kept in contact with the guiding column 31 when the supporting frame 22 rotates, the guiding column 31 is conveniently driven to move downwards, the elastic member 32 is compressed through the abutting part 33, and the elastic member 32 generates elastic reaction force to level the supporting frame 22.

Optionally, the abutting part 33 is of a sleeve structure, the elastic part 32 extends into the sleeve structure and abuts against an inner sidewall of the sleeve structure, a limiting part 34 is disposed on the guiding column 31, and the limiting part 34 abuts against an end surface of the sleeve structure facing the leveling plate 221. The abutting member 33 is of a sleeve structure, and the elastic member 32 may be covered, so that the elastic member 32 is interposed between the guide post 31 and the inner circumferential wall of the sleeve structure in the circumferential direction, thereby protecting the elastic member 32 and preventing the elastic member 32 from being deformed and damaged in the circumferential direction. In this embodiment, since the supporting frame 22 can deflect a certain angle along the movable shaft 21, in order to avoid the interference between the leveling plate 221 and the sleeve structure, the sleeve structure and the leveling plate 221 are arranged at an interval, the guiding post 31 movably penetrates through the inner sidewall of the sleeve structure, the limiting member 34 is arranged on the guiding post 31, and the limiting member 34 on the guiding post 31 is attached to the sleeve structure to transmit an acting force, so that the sleeve structure compresses the elastic member 32. The retaining member 34 may be a nut that is threadedly coupled to the guide post 31. In this embodiment, the elastic member 32 may be a spring, which is convenient to obtain and low in cost, but is not limited to a spring, and in other embodiments, other elastic members 32 such as a gas spring may be selected as long as the elastic reaction force generated during the compression process can level the supporting frame 22.

In this embodiment, optionally, the end of the guiding column 31 extending out of the fixing base 1 is provided with a stop member 35, the stop member 35 can be abutted against the outer side wall of the fixing base 1, and since the guiding column 31 movably penetrates through the fixing base 1, the stop member 35 provided at the end of the guiding column 31 extending out of the fixing base 1 can limit the guiding column 31 to move up and down within a preset range without departing from the fixing base 1.

In order to accurately detect the position of the movable shaft 21, optionally, the detection module 5 is a proximity switch 51, a sensing piece is disposed on the outer peripheral wall of the movable shaft 21, and the proximity switch 51 detects the distance of the sensing piece to detect whether the movable shaft 21 falls to a preset position. The proximity switch 51 may be a magnetic induction proximity switch in the prior art, and the magnetic induction proximity switch determines the distance between the sensing piece and the fixing base 1 by using a magnetic induction generator as a probe to detect the position of the sensing piece, so as to detect whether the movable shaft 21 falls to a preset position. Compared with a contact pressure sensor adopted in the prior art, the non-contact detection mode reduces the failure rate of the head supporting device and improves the maintenance efficiency of the car lifting jack. Of course, other types of proximity switches 51, such as capacitive proximity switches, may be selected in other embodiments, as long as the position of the movable shaft 21 can be accurately detected. In order to facilitate the disassembly and assembly of the proximity switch 51, optionally, the mounting bracket 13 is arranged on the fixing base 1, the proximity switch 51 is arranged on the mounting bracket 13 in a penetrating manner, the proximity switch 51 is connected with two nuts 52, the mounting bracket 13 is clamped between the two nuts 52, the mounting bracket 13 can be fixedly mounted at the bottom of the fixing base 1 through bolts, and the mounting mode is easy to maintain and replace the proximity switch 51.

Further, in order to ensure the safety of the car lifting jack when lifting the car body of the locomotive, optionally, the support assembly 2 further comprises a head supporting frame 23, the head supporting frame 23 is fixedly connected to the support frame 22, an anti-slip base plate 24 is arranged on the head supporting frame 23, and the anti-slip base plate 24 is in contact with the car body to prevent the whole head supporting device from sliding relative to the car body, so that the use safety of the car lifting jack is improved.

When the head supporting device provided by the embodiment is used, the working process is as follows approximately: when the head supporting device supports the locomotive body (also can be a high-speed rail, a motor train unit and other urban rail transit vehicles), the head supporting frame 23 is in contact with the locomotive body through the anti-skid base plate 24, the car lifting jack clamps the fixed seat 1 through the two arm plates 100 and applies acting force to enable the anti-skid base plate 24 to be in complete contact with the locomotive body, the supporting frame 22 compresses the first elastic assembly 3 and the second elastic assembly 4 under the reaction force of the locomotive body and drives the movable shaft 21 to slide downwards in the fixed seat 1, and synchronous lifting operation of the locomotive body is started when the movable shaft 21 is detected to be lowered to a preset position through the proximity switch 51. In the process of lifting the locomotive body, the support frame 22 is rotatably connected to the movable shaft 21, and the levelness of the support frame is adjusted by the first elastic component 3 and the second elastic component 4 which are positioned on two sides of the movable shaft 21, so that when the locomotive body inclines to cause the head supporting device to generate unbalance loading, the support frame 22 deflects around the movable shaft 21 to further compress the first elastic component 3 or the second elastic component 4, and when the support frame 22 drives the guide post 31 to move downwards through the leveling plate 221, the limit part 34 on the guide post 31 is attached to the sleeve structure to transfer acting force, so that the sleeve structure compresses the elastic component 32, the elastic component 32 generates elastic reaction force to level the support frame 22, and further the support frame 22 is kept level as much as possible, so as to ensure that the locomotive body is kept level in the synchronous lifting process.

The embodiment still provides a car lifting jack, including foretell first device that holds in the palm, be provided with two arm boards 100 on car lifting jack, fix 1 both ends of fixing base respectively on two arm boards 100 through the bolt, set up spout 11 in fixing base 1, slide support frame 22 and set up in spout 11, loose axle 21 runs through fixing base 1 and support frame 22 simultaneously, adopt this kind of nested formula connection structure, dismouting supporting component 2 and fixing base 1 can be fast and conveniently, easily maintain whole first device that holds in the palm, the efficiency of car lifting jack maintenance operation has been improved.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A header assembly, comprising:

the fixing device comprises a fixing seat (1), wherein a sliding groove (11) is formed in the fixing seat (1);

the supporting assembly (2) comprises a movable shaft (21) and a supporting frame (22), the movable shaft (21) penetrates through the fixed seat (1) and is erected in the sliding groove (11), and the supporting frame (22) is arranged in the sliding groove (11) in a sliding mode and is connected to the movable shaft (21) in a rotating mode;

the leveling assembly comprises a first elastic assembly (3) and a second elastic assembly (4) which are arranged at intervals, the first elastic assembly (3) and the second elastic assembly (4) are respectively clamped between the supporting frame (22) and the fixed seat (1), and the movable shaft (21) is positioned between the first elastic assembly (3) and the second elastic assembly (4);

and the distance measuring module (5) is arranged on the fixed seat (1) and used for detecting whether the movable shaft (21) falls to a preset position or not.

2. The head supporting device according to claim 1, wherein the first elastic assembly (3) and the second elastic assembly (4) each comprise a guide post (31), an elastic member (32) and an abutting member (33), one end of the guide post (31) abuts against the support frame (22), the other end of the guide post movably penetrates through the fixed seat (1), the elastic member (32) and the abutting member (33) are sleeved on the guide post (31), one end of the elastic member (32) abuts against the fixed seat (1), and the other end of the elastic member abuts against the support frame (22) through the abutting member (33).

3. The head supporting device according to claim 2, wherein the supporting frame (22) comprises a leveling plate (221), the leveling plate (221) is located above the movable shaft (21), a spherical groove is formed in the leveling plate (221), a spherical structure (311) is arranged at one end, extending into the fixed seat (1), of the guide column (31), and the spherical structure (311) is rotatably arranged in the spherical groove.

4. The head holding device according to claim 3, wherein the abutting member (33) is a sleeve structure, the elastic member (32) extends into the sleeve structure and abuts against an inner side wall of the sleeve structure, a limiting member (34) is disposed on the guide post (31), and the limiting member (34) abuts against an end surface of the sleeve structure facing the leveling plate (221).

5. The head holding device according to claim 2, wherein one end of the guide column (31) extending out of the fixed seat (1) is provided with a stop member (35), and the stop member (35) can be abutted with the outer side wall of the fixed seat (1).

6. The head supporting device according to claim 1, wherein a limiting through hole (12) is formed in the fixing seat (1), the movable shaft (21) penetrates through the limiting through hole (12), the outer peripheral wall of the movable shaft (21) can be attached to the inner peripheral wall of the limiting through hole (12), a shaft shoulder (211) is arranged at one end of the movable shaft (21), the shaft shoulder (211) is attached to one side of the fixing seat (1), an end plate (212) is arranged at the other end of the movable shaft (21), and the end plate (212) is attached to the other side of the fixing seat (1).

7. The head supporting device according to claim 1, wherein the distance measuring module (5) is a proximity switch (51), a sensing piece is arranged on the outer peripheral wall of the movable shaft (21), and the proximity switch (51) is used for detecting the distance of the sensing piece so as to detect whether the movable shaft (21) is lowered to a preset position.

8. The head supporting device according to claim 7, wherein a mounting frame (13) is arranged on the fixing seat (1), the proximity switch (51) is arranged on the mounting frame (13) in a penetrating manner, two nuts (52) are connected to the proximity switch (51), and the mounting frame (13) is clamped between the two nuts (52).

9. The head holding device according to claim 1, wherein the supporting assembly further comprises a head holding frame (23), the head holding frame (23) is fixedly connected to the supporting frame (22), and an anti-skid pad (24) is arranged on the head holding frame (23).

10. A car lifting jack, characterized by comprising the head holding device as claimed in any one of claims 1 to 9.

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