Scissor fork type lifting overhead working truck

Abstract

The utility model relates to the technical field of high-altitude operation equipment, and discloses a shear fork type lifting high-altitude operation vehicle which comprises a vehicle body, a lifting support, a vehicle hopper, a limiting assembly and a touch assembly, the lifting support is arranged on the vehicle body, and the vehicle hopper is arranged at the end, away from the vehicle body, of the lifting support; the limiting assembly comprises fixing plates and limiting stoppers, the fixing plates are arranged at the front end and the rear end of the car hopper, and the limiting stoppers are arranged in the fixing plates. Wherein the limiter comprises a casing, a moving contact rotating shaft and static contacts, at least two static contacts which are arranged at intervals are arranged on the inner wall of the casing, the moving contact rotating shaft is rotatably connected in the casing, and a moving contact binding post is arranged on the moving contact rotating shaft; the touch assembly is fixedly connected to the moving contact rotating shaft. According to the utility model, the moving contact rotating shaft is driven to rotate through the touch assembly, when the moving contact binding post is in contact with the static contact, a safety loop of the vehicle is conducted, and a braking system of the vehicle is immediately triggered, so that constructors are prevented from being further extruded and damaged between an object and the protective fence.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work equipment, in particular to a scissor-type lifting aerial work vehicle. Background Art

[0002] The scissor-type aerial work vehicle is a construction vehicle that can carry people and lift vertically up and down.

[0003] The existing scissor-type lift aerial work vehicle is equipped with limit probes at the four corners of the vehicle bucket. Only when the limit probes hit objects in the air will the protection mechanism of the scissor-type lift aerial work vehicle be triggered and brakes will be applied immediately to prevent objects in the air from colliding with construction workers.

[0004] However, if the scissor lift is raised and the object in the air is located in the middle of the bucket and behind the construction worker, once the scissor lift moves backward, the object behind the construction worker will collide with the construction worker. After the collision, the construction worker will lean on the guardrail on the side wall of the bucket due to inertia, and the guardrail on the side wall of the bucket and the object behind the construction worker will be squeezed together, causing secondary injury to the construction worker. At this time, the limit probe on the bucket cannot sense the object behind the construction worker. If the scissor lift fails to brake in time, it will cause further squeezing injury to the construction worker, and eventually cause serious personal injury accidents.

[0005] In view of this, the existing technology still needs to be improved and enhanced. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a scissor-type lift aerial work vehicle, aiming to solve the technical problem that the existing scissor-type lift aerial work vehicle fails to brake in time during the backward process, causing construction workers to be further squeezed and injured between objects and guardrails.

[0007] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0008] A scissor-type lifting aerial work vehicle comprises a vehicle body, a lifting bracket and a vehicle bucket, wherein the lifting bracket is arranged on the vehicle body, and the vehicle bucket is arranged at one end of the lifting bracket away from the vehicle body; the scissor-type lifting aerial work vehicle further comprises:

[0009] A limit assembly, the limit assembly comprising a fixed plate and a limiter, the fixed plate being arranged at the front and rear ends of the bucket, and the limiter being arranged in the fixed plate;

[0010] The limiter comprises a housing, a moving contact shaft and a stationary contact, at least two stationary contacts arranged at intervals are arranged on the inner wall of the housing, the moving contact shaft is rotatably connected in the housing, and a moving contact terminal capable of contacting with the stationary contact to realize conduction of the vehicle's safety circuit is arranged on the moving contact shaft;

[0011] The touch assembly is fixedly connected to the moving contact shaft.

[0012] As a further improved technical solution, first elastic reset members for abutting against the static contacts are provided on both sides of the movable contact shaft.

[0013] As a further improved technical solution, at least two second elastic return members arranged at intervals are provided in the housing, one end of the second elastic return member is connected to the inner wall of the housing, and the other end is connected to the static contact.

[0014] As a further improved technical solution, a stationary contact terminal is provided on the housing, and the stationary contact terminal is electrically connected to the stationary contact.

[0015] As a further improved technical solution, the limiter also includes:

[0016] A machine box is arranged in the fixing plate, one side of the machine box is provided with an opening, and the machine housing is arranged in the machine box;

[0017] The end cover is detachably connected to the machine box and is used to cover the opening on one side of the machine box.

[0018] As a further improved technical solution, the trigger assembly includes two rotating single pieces arranged at intervals along the length direction of the bucket, and the rotating single piece is fixedly connected to the rotating shaft of the moving contact.

[0019] As a further improved technical solution, the rotating single piece includes:

[0020] Two rotating plates are arranged on both sides of the bucket along the width direction of the bucket, and the rotating plates are fixedly connected to the rotating shaft of the moving contact;

[0021] At least two shift rods are provided, wherein the shift rods are located between the two rotating plates, and the ends of the shift rods are fixedly connected to the rotating plates.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The present application provides a scissor-type lifting aerial work vehicle, comprising a vehicle body, a lifting bracket, a vehicle bucket, a limit assembly and a touch assembly, wherein the lifting bracket is arranged on the vehicle body, and the vehicle bucket is arranged at one end of the lifting bracket away from the vehicle body; the limit assembly comprises a fixing plate and a limiter, wherein the fixing plate is arranged at the front and rear ends of the vehicle bucket, and the limiter is arranged in the fixing plate; wherein the limiter comprises a housing, a moving contact shaft and a static contact, wherein at least two spaced static contacts are arranged on the inner wall of the housing, the moving contact shaft is rotatably connected in the housing, and a moving contact terminal is arranged on the moving contact shaft; and the touch assembly is fixedly connected to the moving contact shaft. In the present application, the construction workers collide with the trigger component, which drives the moving contact shaft to rotate. When the moving contact terminal contacts the static contact, the vehicle's safety circuit is connected and the vehicle's own braking system is immediately triggered to prevent the construction workers from being further squeezed and injured between the objects behind them and the guardrail in front of them during the vehicle's retreat, thereby avoiding more serious safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the front view of the scissor lift aerial work vehicle;

[0025] Figure 2 It is the left view of the scissor lift aerial work vehicle;

[0026] Figure 3 This is a schematic diagram of the interior of the limiter.

[0027] The numbers in the figure are as follows: 1. vehicle body; 2. lifting bracket; 3. vehicle box; 4. rotating plate; 5. gear lever; 6. limit assembly; 601. fixed plate; 602. limiter; 6021. housing; 6022. moving contact shaft; 6023. first elastic reset member; 6024. moving contact terminal; 6025. second elastic reset member; 6026. stationary contact; 6027. stationary contact terminal; 6028. machine box. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0030] It should also be noted that the same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] Example

[0033] like Figures 1 to 3 As shown, Figure 1 This is the front view of the scissor lift aerial work vehicle; Figure 2 It is the left view of the scissor lift aerial work vehicle; Figure 3 Specifically, this embodiment provides a scissor-type lifting aerial work vehicle, including a vehicle body 1, a lifting bracket 2, a vehicle bucket 3, a limiting assembly 6 and a trigger assembly.

[0034] The vehicle body 1 is provided with the lifting bracket 2 , and the lifting bracket 2 includes a scissor-type lifting bracket that can be lifted vertically. The vehicle bucket 3 is provided at one end of the lifting bracket 2 away from the vehicle body 1 .

[0035] The limiting assembly 6 includes a fixing plate 601 and a limiter 602 . The fixing plate 601 is arranged at the front and rear ends of the truck box 3 , that is, the fixing plate 601 is arranged at the four corners of the truck box 3 . The limiter 602 is arranged inside the fixing plate 601 .

[0036] Specifically, the limiter 602 includes a housing 6021, a moving contact shaft 6022, a static contact 6026, a static contact terminal 6027 and a machine box 6028. The machine box 6028 is arranged in the fixed plate 601, and an opening is arranged on one side of the machine box 6028. The opening of the machine box 6028 is also provided with an end cover, and the end cover is detachably connected to the machine box 6028, and can be specifically fixedly connected by bolts or pins to cover the opening. The machine box 6028 accommodates the housing 6021; the moving contact shaft 6022 is rotatably connected in the housing 6021, and the moving contact shaft 6022 is fixed to the touch assembly. The movable contact shaft 6022 is connected, and first elastic reset members 6023 are arranged on both sides of the movable contact shaft 6022, that is, one end of the first elastic reset member 6023 is connected to the movable contact shaft 6022, and the other end is used to abut against the static contact 6026, and the first elastic reset member 6023 includes a first spring, and a movable contact terminal 6024 is arranged on the movable contact shaft 6022; two second elastic reset members 6025 are arranged at intervals on the inner wall of the housing 6021, and one end of the second elastic reset member 6025 is connected to the inner wall of the housing 6021, and the other end is connected to the static contact 6026, and the second elastic reset member 6025 includes a second spring. Of course, it should be understood that the first elastic reset member 6023 and the second elastic reset member 6025 can also select other elastic reset structures in the prior art according to actual needs, which is not limited in this embodiment; a static contact terminal 6027 is provided on the housing 6021, and the static contact terminal 6027 is electrically connected to the static contact 6026. Under normal circumstances, the moving contact shaft 6022 remains stationary in the housing 6021, and the moving contact terminal 6024 on the moving contact shaft 6022 is located in the middle area between the two static contacts 6026. When the construction personnel collide with the touch component, the touch component drives the moving contact shaft 6022 rotates, so that the first elastic reset member 6023 on one side of the moving contact shaft 6022 abuts against one of the static contacts 6026, and the moving contact terminal 6024 on the moving contact shaft 6022 contacts the other static contact 6026, so that the vehicle's safety circuit is turned on and the vehicle's own braking system is immediately triggered to stop the vehicle from moving forward, backward, and the bucket raising and lowering movements, preventing the construction workers from colliding with objects on the top of the bucket 3 after the bucket 3 is raised; and preventing the construction workers from being further squeezed and injured between the objects behind them and the guardrail in front of them during the backward movement of the vehicle, thereby avoiding more serious safety accidents.

[0037] The trigger assembly includes two rotating single pieces arranged at intervals along the length direction of the bucket 3 , and the rotating single piece is fixedly connected to the moving contact shaft 6022 .

[0038] As a further improved technical solution of this embodiment, the rotating single piece includes two rotating plates 4 and two shift rods 5. The two rotating plates 4 are arranged on both sides of the truck bucket 3 along the width direction of the truck bucket 3, and the middle part of the rotating plate 4 is fixedly connected to the moving contact shaft 6022; the shift rod 5 is located between the two rotating plates 4, and the end of the shift rod 5 is fixedly connected to the rotating plate 4.

[0039] Specifically, the scissor-type lifting aerial work vehicle provided in this embodiment has the following working principle:

[0040] Under normal circumstances, the moving contact terminal 6024 on the moving contact shaft 6022 is located in the middle area between the two static contacts 6026. When the construction workers or the object located on the top of the truck bed 3 collides with the gear lever 5, the rotating plate 4 drives the moving contact shaft 6022 to rotate, so that the first elastic reset member 6023 on one side of the moving contact shaft 6022 abuts against one of the static contacts 6026, and the moving contact terminal 6024 on the moving contact shaft 6022 contacts the other static contact 6026, so that the safety circuit of the vehicle is turned on and the vehicle's own braking system is immediately triggered, so that the vehicle stops moving forward, backward, and the truck bed raises and lowers.

[0041] Specifically, the scissor-type lifting aerial work vehicle provided in this embodiment has at least the following beneficial effects:

[0042] (1) When a construction worker or an object on the top of the truck bed 3 collides with the trigger assembly, the trigger assembly drives the moving contact shaft 6022 to rotate. When the moving contact terminal 6024 contacts the static contact 6026, the vehicle's safety circuit is turned on and the vehicle's own braking system is immediately triggered to stop the vehicle's forward, backward, truck bed raising and truck bed lowering movements, thereby preventing the construction worker from colliding with the object on the top of the truck bed 3; and preventing the construction worker from being further squeezed and injured between the object behind him and the guardrail in front of him during the backward movement of the vehicle, thereby avoiding more serious safety accidents;

[0043] (2) When an object in the air is located behind the vehicle bucket 3 and the vehicle is blocked by the object during its backward movement, the object touches the trigger assembly, causing the moving contact terminal 6024 to contact the static contact 6026. After the vehicle's safety circuit is turned on, the vehicle's own braking system is immediately triggered to stop the vehicle's backward movement, thereby preventing the vehicle bucket 3 from colliding violently with the object in the air.

[0044] It should be noted that an operation panel is also provided in the truck bed 3, and the operation panel is connected to the safety circuit of the vehicle. When the construction workers in the truck bed 3 sense danger, they can immediately brake the vehicle forward, backward, raise the truck bed and lower the truck bed through the operation panel. This is a technical solution that can be realized in the prior art.

[0045] When the personnel in the truck bed 3 observe danger, they can also manually push the lever 5, so that the moving contact shaft 6022 drives the moving contact terminal 6024 to contact the static contact 6026, and the vehicle's safety circuit is connected, thereby stopping the vehicle in an emergency.

[0046] The present application provides a scissor-type lifting aerial work vehicle, comprising a vehicle body 1, a lifting bracket 2, a vehicle bucket 3, a limit assembly 6 and a touch assembly, wherein the lifting bracket 2 is arranged on the vehicle body 1, and the vehicle bucket 3 is arranged at one end of the lifting bracket 2 away from the vehicle body 1; the limit assembly 6 comprises a fixing plate 601 and a limiter 602, wherein the fixing plate 601 is arranged at the front and rear ends of the vehicle bucket 3, and the limiter 602 is arranged in the fixing plate 601; wherein the limiter 602 comprises a housing 6021, a moving contact shaft 6022 and a static contact 6026, wherein at least two spaced static contacts 6026 are arranged on the inner wall of the housing 6021, the moving contact shaft 6022 is rotatably connected in the housing 6021, and a moving contact terminal 6024 is arranged on the moving contact shaft 6022; and the touch assembly is fixedly connected to the moving contact shaft 6022. In the present application, the construction workers collide with the trigger component, which drives the moving contact shaft 6022 to rotate. When the moving contact terminal 6024 contacts the static contact 6026, the vehicle's safety circuit is connected and the vehicle's own braking system is immediately triggered to prevent the construction workers from being further squeezed and injured between the objects behind them and the guardrail in front of them during the vehicle's retreat, thereby avoiding more serious safety accidents.

[0047] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the solutions disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present solution. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

Claims

1. A scissor-type lifting aerial work vehicle, comprising a vehicle body (1), a lifting bracket (2) and a vehicle bucket (3), wherein the lifting bracket (2) is provided on the vehicle body (1), and the vehicle bucket (3) is provided at one end of the lifting bracket (2) away from the vehicle body (1); characterized in that: The scissor lift aerial work vehicle also includes: A limit assembly (6), the limit assembly (6) comprising a fixing plate (601) and a limiter (602), the fixing plate (601) being arranged at the front and rear ends of the bucket (3), the limiter (602) being arranged inside the fixing plate (601); The limiter (602) comprises a housing (6021), a moving contact shaft (6022) and a stationary contact (6026); at least two stationary contacts (6026) are arranged at intervals on the inner wall of the housing (6021); the moving contact shaft (6022) is rotatably connected in the housing (6021); and a moving contact terminal (6024) is provided on the moving contact shaft (6022) and can contact with the stationary contact (6026) to realize conduction of the vehicle's safety circuit; The contact assembly is fixedly connected to the moving contact shaft (6022).

2. The scissor-type lifting aerial work vehicle according to claim 1, characterized in that: First elastic reset members (6023) for abutting against the stationary contact (6026) are provided on both sides of the movable contact shaft (6022).

3. The scissor-type lifting aerial work vehicle according to claim 2, characterized in that: At least two second elastic return members (6025) arranged at intervals are provided in the housing (6021); one end of the second elastic return member (6025) is connected to the inner wall of the housing (6021), and the other end is connected to the static contact (6026).

4. The scissor-type lifting aerial work vehicle according to claim 3, characterized in that: The housing (6021) is provided with a stationary contact terminal (6027), and the stationary contact terminal (6027) is electrically connected to the stationary contact (6026).

5. The scissor-type lifting aerial work vehicle according to any one of claims 1 to 4, characterized in that: The stopper (602) further comprises: A machine box (6028) is arranged inside the fixing plate (601), one side of the machine box (6028) is provided with an opening, and the machine housing (6021) is arranged inside the machine box (6028); An end cover is detachably connected to the machine box (6028) and is used to cover an opening on one side of the machine box (6028).

6. The scissor-type lifting aerial work vehicle according to claim 1, characterized in that: The contact assembly comprises two rotating single pieces arranged at intervals along the length direction of the bucket (3), and the rotating single pieces are fixedly connected to the moving contact shaft (6022).

7. The scissor-type lifting aerial work vehicle according to claim 6, characterized in that: The rotating single piece comprises: Two rotating plates (4) are arranged on both sides of the vehicle bucket (3) along the width direction of the vehicle bucket (3), and the rotating plates (4) are fixedly connected to the moving contact shaft (6022); At least two shift rods (5), the shift rods (5) are located between the two rotating plates (4), and the ends of the shift rods (5) are fixedly connected to the rotating plates (4).

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