Container trailer maintenance rack

Abstract

The utility model relates to a kind of container trailer maintenance rack, including left, right movable support seat, left, right lifting mechanism, main, driven rotary mechanism and left, right working arm, the left support seat is connected with right support seat by adjustable crossbeam, left, right lifting mechanism is respectively vertically fixedly connected on the left, right support seat, main, driven rotary mechanism is fixedly connected on the top of left, right lifting mechanism, main, driven rotary mechanism is connected with left, right working arm, the left, right working arm is clamped trailer.The utility model is convenient for trailer maintenance.Rack moves flexibly and can be stored in any appropriate place, without occupying too much storage space.When working, trailer can also be transferred to a new position, so that different postures and angles of trailer can be achieved to facilitate maintenance personnel's maintenance.Safety, simplicity and low failure rate.The utility model solves the phenomenon of occupying large-scale loading and unloading mechanical auxiliary maintenance, and achieves the purpose of special tool special maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of transport vehicles, and particularly relates to a maintenance stand for a container trailer. Background Art

[0002] Container tractors are mainly engaged in container transportation business. The trailers they tow frequently load, unload and transfer containers. Both containers and roads will cause frequent impacts on the trailers, resulting in a very high damage rate of the trailers. Damaged parts include: front, middle and rear supports of axles, leaf springs, axles, traction pins, traction pin base plates, etc. Therefore, the workload of trailer maintenance in freight yards is also very huge.

[0003] When maintaining trailers conventionally, we need to use other large loading and unloading machinery to bind the trailer with steel wire ropes and then assist a forklift to lift or turn it over. This maintenance mode has the following disadvantages: 1. The loading and unloading machinery will be occupied for a long time during the maintenance process, making it unable to engage in other production operations; 2. The hoisting process requires multiple people for command and observation, which has potential safety hazards; 3. The process is rigid and takes a long time, which greatly reduces the maintenance efficiency; 4. Once the trailer is in a maintenance state, it cannot be moved, which will affect the maintenance space for other machinery; 5. The above process will be repeated after maintenance, resulting in a long time for the entire maintenance process.

[0004] Port transportation freight yards urgently need to solve the bottleneck problems of potential safety hazards and long maintenance time in trailer maintenance. Contents of the Utility Model

[0005] The utility model aims to overcome the deficiencies in the prior art and provide a maintenance stand for a container trailer, which can transfer the working position together with the trailer, satisfy different maintenance postures or change angles of the trailer, and facilitate maintenance for maintenance personnel.

[0006] To achieve the above objective, the utility model is implemented through the following technical solution: a maintenance stand for a container trailer, comprising left and right movable support seats, left and right lifting mechanisms, driving and driven rotating mechanisms, and left and right working arms, wherein the left support seat is connected with the right support seat through an adjustable cross beam, the left and right support seats are respectively vertically and fixedly connected with the left and right lifting mechanisms, the tops of the left and right lifting mechanisms are fixedly connected with the driving and driven rotating mechanisms, the driving and driven rotating mechanisms are connected with the left and right working arms, and the left and right working arms clamp the trailer.

[0007] Further, the cross beam comprises a main cross beam and an auxiliary cross beam, the auxiliary cross beam is inserted into and slidably connected with the main cross beam, the main cross beam is fixedly connected with the left movable support seat, and the auxiliary cross beam is fixedly connected with the right movable support seat, forming an adjustable cross beam structure.

[0008] Further, the left and right movable support seats are in an I-shape.

[0009] Furthermore, the bottom of the left and right movable support seats is fixed with rollers, forming a movable support seat structure.

[0010] Furthermore, the left and right lifting mechanisms include an inner cylinder, an inner cylinder screw seat, an inner cylinder cover, an outer cylinder, a rocker arm, a handle, a driving bevel gear, a driven bevel gear, a screw, and an outer cylinder screw seat. The inner cylinder and the outer cylinder are slidably connected. A radial insertion hole is provided on the outer wall below the outer cylinder, into which the rocker arm is inserted. The rocker arm is keyed to a handle. A driving bevel gear is keyed to the rocker arm, and the driving bevel gear meshes with the driven bevel gear. The driven bevel gear is keyed to the lower end of the screw. The lower end of the screw is slidably connected to the outer cylinder screw seat. The middle part of the screw is screwed to the inner cylinder screw seat, forming an inner cylinder lifting mechanism. A boss is provided at the lower end of the screw, and a pressure bearing is placed between the boss and the outer cylinder screw seat. The upper end of the inner cylinder has a cover, which is connected to a rotating mechanism. The outer cylinder is fixedly connected to a movable support base.

[0011] Furthermore, the active rotation mechanism includes a housing and a sun gear transmission mechanism placed inside the housing. The sun gear transmission mechanism includes a sun gear, planet gears, a planet gear carrier, and a gear ring. The gear ring is fixedly connected to the housing, meshes with the planet gears, and meshes with the sun gear. The planet gears are supported on the planet gear carrier by pins, and the planet gear carrier is fixedly connected to the working arm. One end of the sun gear is keyed to a crank handle.

[0012] Furthermore, the working arm includes a horizontal arm and a vertical arm, and the horizontal arm and the vertical arm are vertically fixed together as a whole.

[0013] Furthermore, the ends of the horizontal and vertical arms are provided with right-angle locking feet.

[0014] Furthermore, a fastening screw is screwed onto the right-angle clamp, and a fastening seat is provided at the front end of the fastening screw.

[0015] Beneficial Effects: Compared with existing technologies, this utility model facilitates trailer maintenance. When not in use, the frame can be disassembled at both ends, making it flexible to move and store in any suitable location without occupying too much storage space. During operation, it can also be connected to the trailer to transfer workstations, allowing the trailer to be positioned in different ways and at varying angles for easy maintenance by personnel. It is safe, simple, structurally uncomplicated, and has a low failure rate. It solves the problem of previously requiring large loading and unloading machinery for auxiliary maintenance, achieving the goal of dedicated tools for dedicated maintenance. The adjustable performance of the frame allows for the maintenance of different models of trailers, and even other structural equipment can be maintained by selecting appropriate "working arms". Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2is a working state diagram of the trailer clamped by the utility model; Figure 3 is a structural schematic diagram of the active rotating mechanism; Figure 4 is a structural schematic diagram of the lifting mechanism; Figure 5 is a structural schematic diagram of the working arm.

[0017] In the figures: 1, left and right movable support seats, 1-1, rollers, 2, lifting mechanism, 2-1, inner cylinder, 2-2, inner cylinder upper cover, 2-3, inner cylinder screw seat, 2-4, outer cylinder, 2-5, rocker, 2-6, handle, 2-7, driving bevel gear, 2-8, driven bevel gear, 2-9, screw rod, 2-10, outer cylinder screw seat, 2-11, inner cylinder base, 2-12, thrust bearing, 2-13, screw boss, 3, rotating mechanism, 3-1, housing, 3-2, sun gear, 3-3, planetary gear, 3-4, planetary gear carrier, 3-5, gear ring, 3-6, pin shaft, 3-7, support shaft, 3-8, handle, 4, working arm, 4-1, transverse arm, 4-2, longitudinal arm, 4-3, right-angle clamping foot, 4-3-1, fastening screw rod, 4-3-2, fastening seat, 5, adjustable cross beam, 5-1, main cross beam, 5-2, auxiliary cross beam, 6, trailer. DETAILED DESCRIPTION

[0018] Hereinafter, the specific embodiments provided according to the present utility model are described in detail with reference to the preferred embodiments: as shown in the accompanying drawings, the present embodiment provides a container trailer maintenance gantry, comprising left and right movable support seats 1, left and right lifting mechanisms 2, driving and driven rotating mechanisms 3 and left and right working arms 4, the left movable support seat is connected to the right movable support seat through a cross beam 5, the lifting mechanisms are respectively vertically and fixedly connected to the left and right support seats, the rotating mechanisms are fixedly connected to the top of the lifting mechanisms, the working arms are connected to the rotating mechanisms, and the working arms clamp the trailer 6.

[0019] According to the preferred solution of the present embodiment, the cross beam comprises a main cross beam 5-1 and an auxiliary cross beam 5-2, the auxiliary cross beam is inserted into and slidably connected with the main cross beam, the main cross beam is fixedly connected with the left support seat, and the auxiliary cross beam is fixedly connected with the right support seat, forming an adjustable cross beam structure.

[0020] According to the preferred solution of the present embodiment, the left and right support seats are in the shape of an "I".

[0021] According to the preferred solution of the present embodiment, rollers 1-1 are fixedly connected to the bottom of the left and right support seats to form a movable support seat structure.

[0022] In a preferred embodiment, the lifting mechanism includes an inner cylinder 2-1, an inner cylinder base 2-11, an inner cylinder top cover 2-2, an inner cylinder screw wheel seat 2-3, an outer cylinder 2-4, a rocker arm 2-5, a handle 2-6, a driving bevel gear 2-7, a driven bevel gear 2-8, a screw 2-9, and an outer cylinder screw seat 2-10. The inner cylinder and the outer cylinder are slidably connected. A radial insertion hole is provided on the outer wall below the outer cylinder, into which the rocker arm is inserted. The rocker arm is keyed to a handle. A drive bevel gear is keyed to the rocker arm, and the drive bevel gear meshes with the driven bevel gear. The driven bevel gear is keyed to the lower end of the screw. The lower end of the screw is slidably connected to the outer cylinder screw seat. The middle part of the screw is screwed to the inner cylinder screw seat 2-3, forming an inner cylinder lifting mechanism. A boss 2-13 is provided at the lower end of the screw. A pressure bearing 2-12 is placed between the boss and the outer cylinder screw seat. The upper end of the inner cylinder has a cover, and the inner cylinder cover is connected to the rotating mechanism. The outer cylinder is fixedly connected to the movable support base.

[0023] In a preferred embodiment, the active rotation mechanism includes a housing 3-1 and a sun gear transmission mechanism housed within the housing. The sun gear transmission mechanism includes a sun gear 3-2, planetary gears 3-3, a planet carrier 3-4, and a ring gear 3-5. The ring gear is fixedly connected to the housing and meshes with the planetary gears. The planetary gears mesh with the sun gear. The planetary gears are supported on the planetary gear carrier via pins 3-6. The planetary gear carrier is fixedly connected to the working arm 4. One end of the sun gear is keyed to a handle 3-8. In this embodiment, there are four planetary gears. The flipping mechanism is divided into an active rotation mechanism and a driven rotation mechanism.

[0024] In a preferred embodiment, the working arm includes a horizontal arm 4-1 and a vertical arm 4-2. The horizontal arm and the vertical arm are vertically fixed together as a whole. The ends of the horizontal arm and the vertical arm are provided with right-angle retaining feet 4-3. Fastening screws 4-3-1 are screwed onto the right-angle retaining feet. Fastening seats 4-3-2 are provided at the front end of the fastening screws.

[0025] The working principle and process will be further explained below with reference to the specific structure of this embodiment. working methods As shown in the diagram, the platform is mainly composed of two parts. Two "movable support seats" are spaced apart via an adjustable crossbeam to accommodate trailers of different lengths. A "working arm" holds the trailer in place for later maintenance. Two "lifting mechanisms" must rise and fall synchronously to keep the trailer level (a slight height difference between the two ends is acceptable). When the "lifting mechanism" raises the trailer to the appropriate height, the "active tilting mechanism" uses the trailer to drive the "driven tilting mechanism," tilting or tilting the trailer. When the trailer reaches the desired maintenance position, the "lifting mechanism" is manipulated again to lower it for easier maintenance. After the trailer's fault is repaired, the initial position can be restored by reversing the operation, completing the maintenance.

[0026] Working principle The existing trailer's working plane (i.e., the plane that carries the container) dimensions are 12640*2420*210 (mm). The inner transverse and longitudinal span of the boom should be designed to be 2550*350 mm, which meets the width and thickness requirements of the trailer's working plane. The clearance between the two (the trailer's working plane and boom) can be compensated for by fastening bolts and fastening seats. The fastening bolts and boom are screwed together, allowing for easy screwing in and out, resulting in a simple structure and convenient operation. The fastening seat has a central groove to accommodate the head of the fastening bolt, which also serves a positioning function. Both the fastening bolts and fastening seats can be easily installed and removed.

[0027] Internal structure of the active rotation mechanism: The sun gear is rotated by an external operating handle, which drives the planet gears to rotate. The output end of the planet gear carrier is connected to the working arm, thus realizing the rotation of the working arm.

[0028] The internal structure of the lifting mechanism: An external operating handle rotates a rocker arm, which in turn rotates the driving bevel gear and its meshing driven bevel gear, causing the screw to rotate. The screw, through an inner cylinder screw wheel seat, drives the inner cylinder shaft to slide up and down, achieving the reciprocating motion of the inner cylinder. The lower end of the screw is designed as a stepped shaft with a boss, and a pressure bearing is installed between the boss and the outer cylinder screw seat to reduce friction between them. Because of the combined weight of the inner cylinder, the rotating mechanism, and the maintenance trailer, there will be no axial movement when the driving and driven bevel gears mesh.

[0029] Operating procedure: The inner side of the boom rests against the trailer. The lifting mechanism is used to adjust the boom's height so that the lower edge of the boom's inner side supports the trailer. Rotating the fastening screw tightens the fastening seat and the inner side of the boom, securing the trailer vertically. The lateral fastening of the boom is done in the same way. Only after tightening can the next step be performed.

[0030] The above detailed description of a container trailer maintenance platform with reference to the embodiments is illustrative rather than limiting. Several embodiments can be listed according to the defined scope. Therefore, changes and modifications without departing from the overall concept of this utility model should be within the protection scope of this utility model.

Claims

1. A container trailer repair stand, characterized in that: It comprises a left movable support base, a right movable support base, a left lifting mechanism, a right lifting mechanism, a driving rotating mechanism, a driven rotating mechanism, a left working arm and a right working arm. The left movable support base is connected with the right movable support base via an adjustable cross beam. The left and right movable support bases are respectively vertically and fixedly connected with the left and right lifting mechanisms. The tops of the left and right lifting mechanisms are fixedly connected with the driving and driven rotating mechanisms. The driving and driven rotating mechanisms are connected with the left and right working arms, and the left and right working arms clamp and mount a trailer.

2. The container trailer repair stand according to claim 1, characterized in that: The cross beam comprises a main cross beam and an auxiliary cross beam. The auxiliary cross beam is inserted into and slidably connected with the main cross beam. The main cross beam is fixedly connected with the left movable support base, and the auxiliary cross beam is fixedly connected with the right movable support base, forming an adjustable cross beam structure.

3. The container trailer repair stand according to claim 1, characterized in that: The left and right movable support bases are I-shaped.

4. The container trailer repair stand according to claim 1 or 3, characterized in that: Rollers are fixedly connected to the bottoms of the left and right movable support bases, forming a movable support base structure.

5. The container trailer repair stand according to claim 1, characterized in that: The left and right lifting mechanisms comprise an inner cylinder, an inner cylinder screw wheel seat, an inner cylinder upper cover, an outer cylinder, a rocking rod, a handle, a driving bevel gear, a driven bevel gear, a screw rod and an outer cylinder screw seat. The inner cylinder is slidably connected with the outer cylinder. A radial insertion hole is formed in an outer wall below the outer cylinder, the rocking rod is inserted into the insertion hole, the rocking rod is in key connection with the handle, the rocking rod is in key connection with the driving bevel gear, the driving bevel gear is meshed with the driven bevel gear, the driven bevel gear is in key connection with the lower end of the screw rod, the lower end of the screw rod is slidably connected with the outer cylinder screw seat, and the middle part of the screw rod is in threaded connection with the inner cylinder screw wheel seat, forming an inner cylinder lifting mechanism. A boss is arranged at the lower end of the screw rod, a pressure bearing is arranged between the boss and the outer cylinder screw seat, an upper cover is arranged at the upper port of the inner cylinder, the inner cylinder upper cover is connected with the rotating mechanism, and the outer cylinder is fixedly connected with the movable support base.

6. The container trailer repair stand according to claim 1, characterized in that: The driving rotating mechanism comprises a housing and a sun gear transmission mechanism arranged in the housing. The sun gear transmission mechanism comprises a sun gear, planet gears, a planet carrier and a gear ring. The gear ring is fixedly connected with the housing, the gear ring is meshed with the planet gears, the planet gears are meshed with the sun gear, the planet gears are supported on the planet carrier via pin shafts, the planet carrier is fixedly connected with the working arm, and one end of the sun gear is in key connection with a rocking handle.

7. The container trailer repair stand according to claim 1, characterized in that: The working arm comprises a transverse arm and a longitudinal arm, and the transverse arm and the longitudinal arm are vertically and fixedly connected into a whole.

8. The container trailer repair stand according to claim 7, characterized in that: Right-angled clamping feet are arranged at the ends of the transverse arm and the longitudinal arm.

9. The container trailer repair stand according to claim 8, characterized in that: A fastening screw rod is in threaded connection with the right-angled clamping foot, and a fastening seat is arranged at the front end of the fastening screw rod.

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