A quick positioning, plugging and separating structure for a detachable vehicle box and chassis

Abstract

The present invention discloses a quick positioning, plugging and separating structure for a detachable vehicle box and a chassis, belonging to the technical field of transportation equipment; it comprises a chassis fixing plate arranged at the upper end of a chassis beam and a box fixing plate connected to the front end of a vehicle-mounted box, the chassis fixing plate and the box fixing plate being fixedly connected via a plug-in structure; a movable plate is connected to the chassis fixing plate via a first spring, a conical socket is arranged on the outer end face of the movable plate, and a conical head adapted to the conical socket is connected to the end face of the box fixing plate via a second spring; the movable plate and the box fixing plate are also provided with corresponding quick fixing devices along the plug-in direction. The present invention can achieve the purpose of automatic fine-tuning of plug-in positioning within a small range through the elastic matching connection between the conical socket on the movable plate and the conical head on the box fixing plate, and further achieves the purpose of automatic fixing through the quick fixing device, thereby greatly improving the loading and unloading efficiency of the detachable vehicle box and the chassis.

Description

Technical Field

[0001] The present invention relates to a positioning and fixing device between a transport vehicle chassis and a loading box, and in particular to a quick positioning, plugging and separating structure for a detachable vehicle box and a chassis, belonging to the technical field of transport equipment. Background Art

[0002] At present, in order to solve the problem of low efficiency of transport equipment in transporting goods, which requires loading before unloading, a device with a pulling arm type box-dropping device is designed on the chassis. This device can solve the problem of efficient utilization of transport vehicles. However, the cargo box needs to be unloaded by tilting the chassis, which is not suitable for most heavy-duty transport vehicles and requires a lot of manual loading and unloading labor.

[0003] To improve loading and unloading efficiency, existing devices have been designed with structures that can be lifted and lowered and loaded and unloaded along with the cargo. For example, a loading and unloading positioning vehicle-mounted device with authorization publication number CN213815823U discloses a device that loads and unloads cargo through the coordination of front and rear positioning devices, quick fastening devices, and left and right positioning devices. This device can quickly and conveniently complete the loading and unloading of heavy transport vehicles, and improves loading and unloading efficiency through the design of multiple positioning structures. However, the following problems still exist during its application:

[0004] 1) Since the quick fastening device at the front end of the device achieves fastening through the fastening frame and the fasteners on the fastening plate, and the fasteners generally need to be manually inserted, the positioning efficiency during the loading and unloading process is greatly improved, but the fixing efficiency is not improved, and further optimization design is still needed;

[0005] 2) The positioning plug-in structure at the front end of the device is designed to be a structure in which a positioning hole and a positioning rod cooperate to achieve the purpose of positioning and limiting. The positioning hole and the positioning column are rigidly connected on the vehicle chassis and the vehicle box. During the positioning process of the vehicle compartment, the positioning rod can only enter the positioning hole through continuous adjustment and displacement between the vehicle chassis and the vehicle box. When there is an error in the docking angle or the position of the hole rod, the positioning function cannot be completed quickly, and there are certain limitations during use.

[0006] Therefore, there is an urgent need to design a rapid positioning and fixing device for a box-dropping vehicle, which can complete the positioning and fixing work more quickly and does not require manual fixation, thereby further improving the loading and unloading efficiency. Summary of the Invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a quick positioning, plugging and separating structure for a detachable vehicle box and a chassis. By introducing a spring, an elastic fitting connection is achieved between the conical socket on the movable plate and the conical head on the fixed plate of the box body, which can achieve the purpose of automatic fine-tuning of the plug-in positioning within a small range, and further achieve the purpose of automatic fixation through a quick fixing device, thereby greatly improving the loading and unloading efficiency of the detachable vehicle box and the chassis.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a quick positioning, plug-in and separation structure for a detachable vehicle box and a chassis, comprising a chassis fixing plate arranged at the upper end of the chassis beam and a box fixing plate connected to the front end of the vehicle-mounted box, the chassis fixing plate and the box fixing plate being fixedly connected by a plug-in structure; a movable plate is connected to the chassis fixing plate by a first spring, a conical socket is provided on the outer end face of the movable plate, and a conical head adapted to the conical socket is connected to the end face of the box fixing plate by a second spring; quick fixing devices that cooperate with each other are also provided on the movable plate and the box fixing plate along the plug-in direction.

[0009] The tapered socket extends from the outer end surface to the inner end surface and is arranged in the middle of the movable plate. A through hole is arranged on the chassis fixing plate at a center position corresponding to the tapered socket.

[0010] A plurality of balls are provided on the inner end surfaces of the movable plate and the chassis fixing plate that are in contact with each other, and the plurality of balls are in point contact connection with the end surface of the chassis fixing plate.

[0011] There are four balls, which are correspondingly arranged at the four corners of the movable plate.

[0012] The chassis fixing plate is connected to the movable plate via upper and lower sides or left and right sides, and limiting plates are provided on both sides of the chassis fixing plate.

[0013] A large diameter tube is fixedly connected to the box fixing plate corresponding to the outer circumference of the second spring, and a small diameter tube is fixedly connected to the conical head corresponding to the outer circumference of the second spring. The large diameter tube and the small diameter tube are sleeve structures.

[0014] The small diameter tube slides in the large diameter tube and is limited by mutually cooperating with each other through the provision of tube opening steps.

[0015] The quick fixing device adopts a quick connector with a self-locking sliding sleeve structure, which includes a quick connector female head with an internal hole and a quick connector sub-head that matches the internal hole diameter of the quick connector female head. The outer wall of the locking sleeve of the quick connector female head is connected to the device that provides power to realize the separation function. The quick connector sub-head and the quick connector female head are clamped and fixedly connected through the matching clamping connection between the clamping groove and the steel ball and the pressing contact between the locking sleeve and the steel ball.

[0016] At least one pair of quick connectors is provided between the movable plate and the box fixed plate, the quick connector female connector is fixedly connected to the side wall of the movable plate, and the quick connector male connector is correspondingly fixedly connected to the side wall of the box fixed plate.

[0017] The beneficial effects of the present invention are:

[0018] 1) The device of the present invention achieves an elastic fit connection between the conical socket on the movable plate and the conical head on the fixed plate of the box body by introducing a spring. When there is an offset in the docking angle or position between the conical head and the conical socket on the movable plate, the elastic action of the spring on the movable plate can automatically correct the deviation and dock the components, thereby achieving the purpose of automatic fine-tuning of the plug-in positioning within a small range, solving the harsh working conditions of existing positioning structures, and being widely used in various loading vehicles that require positioning.

[0019] 2) The device of the present invention achieves the purpose of automatic fixation through a quick fixing device. The quick fixing device is implemented by a quick connector and is connected to the outer wall of the lock sleeve through a power device to achieve the purpose of automatic loosening, avoiding the work of manual plugging and unplugging, and realizing fully automated positioning and fixing, greatly improving the loading and unloading efficiency of the detachable car body and chassis; and has the advantages of simple structure, sophisticated design, and more convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 Cross-sectional view of the structure between the middle conical head and the box fixing plate.

[0022] In the figure, 1-chassis beam, 2-chassis fixing plate, 201-through hole, 3-vehicle box, 4-box fixing plate, 5-first spring, 6-movable plate, 7-conical jack, 8-second spring, 9-conical head, 10-quick-connect female head, 11-quick-connect male head, 12-ball, 13-large diameter tube, 14-small diameter tube, 15-limiting plate. DETAILED DESCRIPTION

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0024] Example: Figure 1-2 As shown, the present invention provides a quick positioning, plug-in and separation structure for a detachable vehicle box and a chassis, comprising a chassis fixing plate 2 fixed to the upper end of a chassis beam 1 by welding and a box fixing plate 4 connected to the front end of a vehicle-mounted box 3, and the chassis fixing plate 2 and the box fixing plate 4 are fixedly connected by a plug-in structure.

[0025] The upper and lower parts or the left and right sides of the chassis fixing plate 2 are symmetrically connected to the movable plate 6; the left and right sides of the chassis fixing plate 2 are welded with limit plates 15, and the inner end surfaces of the two limit plates 15 are parallel to the movable plate 6, and are used to limit the left and right displacement of the movable plate 6 during the positioning process, thereby avoiding spring failure and damage caused by excessive stretching or compression of the first spring 5, and further improving the safety performance of the device.

[0026] A conical socket 7 is provided in the middle of the outer end surface of the movable plate 6, and a conical head 9 adapted to the conical socket 7 is connected to the end surface of the box fixing plate 4 through a second spring 8. The purpose of automatic positioning of the device is achieved through the cooperation between the chassis fixing plate 2 and the box fixing plate 4 through the conical socket 7 and the conical head 9.

[0027] The tapered socket 7 extends from the outer end face of the movable plate 6 to the inner end face, and a through hole 201 is opened on the chassis fixing plate 2 at the center position corresponding to the tapered socket 7; a plurality of balls 12 are installed on the inner end faces of the movable plate 6 and the chassis fixing plate 2 corresponding to the contact thereof. When four balls 12 are installed, they are respectively installed at the four corners of the movable plate 6. The four balls 12 are point-contacted with the end face of the chassis fixing plate 2, and the size of the chassis fixing plate 2 and the size of the through hole 201 are adapted to the stroke of the plurality of balls 12, ensuring that the plurality of balls 12 always roll in one plane.

[0028] A large-diameter tube 13 is fixedly connected to the box fixing plate 4 corresponding to the outer circumference of the second spring 8, and a small-diameter tube 14 is fixedly connected to the conical head 9 corresponding to the outer circumference of the second spring 8. A sleeve structure is provided between the large-diameter tube 13 and the small-diameter tube 14. The small-diameter tube 14 slides in the large-diameter tube 13 and is limited by setting a tube mouth step. The sleeve structure is provided as a square tube structure or a cone structure, which can prevent the sleeve structure from rotating when moving relative to each other.

[0029] The movable plate 6 and the box fixed plate 4 are also provided with corresponding quick fixing devices that cooperate with each other along the plug-in direction. The quick fixing device adopts a quick connector with a self-locking sliding sleeve structure, so as to achieve the purpose of automatic fixation of the device; at least one pair of quick connectors is provided, and the quick connector includes a quick connector female head 10 with an internal hole and a quick connector sub-head 11 that matches the internal aperture of the quick connector female head 10. When two pairs of quick connectors are installed, the quick connector female head 10 is fixedly connected to the left and right side walls of the movable plate 6, and the quick connector sub-head 11 is correspondingly fixedly connected to the two side walls of the box fixed plate 4.

[0030] The model of the quick connector is LSQ-S1-04PF-1 / 2-BSP. The quick connector male and female are clamped and fixed together by the fitting engagement between the card slot and the steel ball, and the pressing contact between the locking sleeve and the steel ball.

[0031] The outer wall of the locking sleeve of the quick-connect female connector 10 is connected to the device that provides power to realize the disconnection function. The outer walls of the locking sleeves of the two quick-connect female connectors 10 are connected together through a connecting plate, and are driven by a cylinder, an air pipe or a circuit to realize the quick and automatic plug-in and unplug function.

[0032] The purpose of automatic fixation is achieved through the self-locking sliding sleeve structure between the quick connectors, and the purpose of automatic loosening is achieved by connecting the power equipment to the outer wall of the locking sleeve, avoiding the work of manual plugging and fixing, realizing fully automatic positioning and fixing, and greatly improving the loading and unloading efficiency of the detachable car body and chassis; and it has the advantages of simple structure, sophisticated design and more convenient operation.

[0033] In the device of the present invention, a spring is introduced to realize an elastic fitting connection between the conical socket on the movable plate and the conical head on the fixed plate of the box body, so that when there is an offset in the docking angle or position between the conical head and the conical socket on the movable plate, the elastic action of the spring on the movable plate can automatically correct the deviation and dock the components, thereby achieving the purpose of automatic fine-tuning of the plug-in positioning within a small range, solving the harsh working conditions of the existing positioning structure, and being widely used in various loading vehicles that require positioning.

[0034] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A quick positioning, plugging and separating structure for a detachable vehicle box and chassis, characterized by: The invention comprises a chassis fixing plate (2) arranged at the upper end of a chassis beam (1) and a box fixing plate (4) connected to the front end of a vehicle-mounted box (3), wherein the chassis fixing plate (2) and the box fixing plate (4) are fixedly connected via a plug-in structure; a movable plate (6) is connected to the chassis fixing plate (2) via a first spring (5), a tapered socket (7) is provided on the outer end face of the movable plate (6), and a tapered head (9) adapted to the tapered socket (7) is connected to the end face of the box fixing plate (4) via a second spring (8); and quick fixing devices that cooperate with each other are correspondingly provided on the movable plate (6) and the box fixing plate (4) along the plug-in direction; A plurality of balls (12) are provided on the inner end surfaces of the movable plate (6) and the chassis fixing plate (2) in contact with each other, and the plurality of balls (12) are connected to the end surfaces of the chassis fixing plate (2) in point contact. A large-diameter tube (13) is fixedly connected to the box fixing plate (4) corresponding to the outer circumference of the second spring (8), and a small-diameter tube (14) is fixedly connected to the conical head (9) corresponding to the outer circumference of the second spring (8), and the large-diameter tube (13) and the small-diameter tube (14) are a set structure; The quick fixing device adopts a quick connector with a self-locking sliding sleeve structure, the quick connector comprises a quick connector female head (10) with an internal hole and a quick connector sub-head (11) matched with the internal hole diameter of the quick connector female head (10), the outer wall of the locking sleeve of the quick connector female head (10) is connected to a device that provides power to realize the separation function, and the quick connector sub-head (11) and the quick connector female head (10) are clamped and fixedly connected through the matching clamping connection between the clamping groove and the steel ball and the pressing contact between the locking sleeve and the steel ball.

2. A quick positioning, plugging and separating structure for a detachable vehicle box and chassis according to claim 1, characterized in that: The tapered socket (7) extends from the outer end surface to the inner end surface and is arranged in the middle of the movable plate (6); a through hole (201) is provided on the chassis fixing plate (2) at a center position corresponding to the tapered socket (7).

3. The quick positioning, plugging and separating structure for a detachable vehicle box and chassis according to claim 1, characterized in that: Four balls (12) are provided and are correspondingly arranged at the four corners of the movable plate (6).

4. The quick positioning, plugging and separating structure for a detachable vehicle box and chassis according to claim 1, characterized in that: The chassis fixing plate (2) is connected to the movable plate (6) via the upper and lower sides or the left and right sides, and limiting plates (15) are provided on both sides of the chassis fixing plate (2).

5. The quick positioning, plugging and separating structure for a detachable vehicle box and chassis according to claim 1, characterized in that: The small diameter tube (14) slides in cooperation with the large diameter tube (13) and is limited by providing a tube opening step.

6. The quick positioning, plugging and separating structure for a detachable vehicle box and chassis according to claim 1, characterized in that: At least one pair of quick connectors is provided between the movable plate (6) and the box fixed plate (4), the quick connector female head (10) is fixedly connected to the side wall of the movable plate (6), and the quick connector male head (11) is correspondingly fixedly connected to the side wall of the box fixed plate (4).

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