Logistics carrier with adjustable height

Abstract

The utility model discloses a height-adjustable logistics carrier, which relates to the technical field of logistics carrying and comprises a bottom frame, a lifting placing plate is arranged above the bottom frame, and telescopic guide rail mechanisms penetrating through the lifting placing plate are fixed at four corners of the top of the bottom frame. The lifting placing plate ascends and descends relative to the bottom frame through the four sets of telescopic guide rail mechanisms, meanwhile, the lifting placing plate can be driven to ascend and descend along the four sets of telescopic guide rail mechanisms in cooperation with the locking climbing mechanism, a climbing gear of the locking climbing mechanism ascends and descends along a first toothed plate due to the first-stage height, and after a telescopic rail stretches out, the lifting placing plate is driven to ascend and descend. And the locking climbing mechanism can stretch out and lock a second toothed plate on the outer side of the telescopic rail again, so that a climbing gear can stably ascend along the second toothed plate at the second-level height, the lifting process is more stable while the lifting device adapts to logistics carrying operation at different heights, and the lifting efficiency is improved. The problem that the whole gravity center is unstable due to rising, and the vehicle shakes and even inclines is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics transportation, in particular to a logistics transportation vehicle with adjustable height. Background Art

[0002] In today's era of globalization and rapid development of e-commerce, logistics and handling play a vital role in the circulation of goods. Logistics and handling covers a series of operations from receiving, storing, loading and unloading, to transportation and distribution of goods. In the field of logistics and transportation, the height adjustment function of logistics transport vehicles is of great significance. It can adapt to the needs of different loading and unloading scenarios and improve the efficiency and convenience of cargo loading and unloading.

[0003] After the existing logistics transport vehicles have achieved height adjustment, they often expose the problem of poor overall stability. The traditional height adjustment mechanism often uses a hydraulic rod placed at an angle, and the extension and retraction of the hydraulic rod completes the height adjustment of the transport vehicle. Due to the installation state of the hydraulic rod, the center of gravity of the vehicle is easily caused to change significantly during the lifting and adjustment process, thereby affecting the balance and stability of the vehicle. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a height-adjustable logistics transport vehicle to solve the technical problem in the prior art that the overall center of gravity of the logistics transport vehicle that uses a hydraulic rod for lifting is unstable after being raised, causing the vehicle body to easily tilt.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a height-adjustable logistics transport vehicle, comprising a chassis, a lifting and placing plate provided above the chassis, and telescopic guide rail mechanisms penetrating the lifting and placing plate fixed at the four corners of the top of the chassis;

[0006] Both ends of the bottom of the lifting and placing plate are provided with two sets of locking and climbing mechanisms that cooperate with the telescopic guide rail mechanism. The locking and climbing mechanism includes a locking frame, a rotating shaft, a climbing gear, a worm wheel and a worm. The four corners of the bottom of the lifting and placing plate are slidably connected with the locking frame. The climbing gear and the worm wheel are respectively provided at the two ends and the middle position of one side of the locking frame. The climbing gear and the worm wheel are coaxially fixedly connected through the rotating shaft, and the worm wheel is located at the top of the worm wheel and meshes with it.

[0007] The locking climbing mechanism also includes a transmission cylinder, a transmission rod, a connecting rod, a first bevel gear, a motor and a second bevel gear. The motor is installed at the bottom of the lifting and placing plate, and the second bevel gear is fixed to the outside of the motor output shaft. The transmission cylinder is movably connected to the lifting and placing plate, and the first bevel gear and the second bevel gear fixed on one side thereof are meshed with each other.

[0008] The transmission rod is located inside the transmission cylinder and is radially limited and axially slidably connected to the transmission cylinder. The transmission rod and the worm are fixedly connected by a connecting rod.

[0009] The locking climbing mechanism also includes a locking slider and a bidirectional cylinder, the bidirectional cylinder is fixed inside the lifting and placing plate, and the locking slider and the lifting and placing plate are slidably connected, and the inner side of the locking slider is fixedly connected to the output end of the bidirectional cylinder, and the bottom of the locking slider is connected to the transmission rod in radial sliding and axial limiting manner;

[0010] The telescopic guide rail mechanism includes a fixed rail, a first gear plate, a telescopic rail and a second gear plate. The fixed rail is fixed to the top of the base frame. The telescopic rail is located inside the fixed rail and is slidably connected to the fixed rail. The first gear plate and the second gear plate are respectively fixed to the inner sides of the fixed rail and the telescopic rail and cooperate with the climbing gear.

[0011] The telescopic guide rail mechanism also includes a telescopic cavity, a guide rod and a positioning bolt. The guide rod extending into the telescopic rail is fixed inside the fixed rail, and a telescopic cavity matching the guide rod is opened inside the telescopic rail.

[0012] By adopting the above technical solution, the lifting and placing plate is lifted relative to the base frame through the four sets of telescopic guide rail mechanisms, and at the same time, the locking climbing mechanism can drive the lifting and placing plate to be lifted and lowered along the four sets of telescopic guide rail mechanisms. Specifically, the first level height causes the climbing gear of the locking climbing mechanism to be lifted and lowered along the first tooth plate, and the telescopic track can be extended relative to the fixed track. After extension, under the action of the two-way cylinder, the locking climbing mechanism can be extended and locked again to the second tooth plate outside the telescopic track, so that the climbing gear can stably rise to the second level height along the second tooth plate. It can be seen from the above that it can adapt to logistics handling operations at different heights, and the lifting process is more stable, which effectively avoids the problem of vehicle shaking or even tilting caused by the overall center of gravity being unstable due to the lifting, and the use effect is better.

[0013] Furthermore, a top portion of one side of the fixed rail is threadedly connected to a positioning bolt extending into the interior of the telescopic rail, and threaded holes matching the positioning bolts are provided on one side of the fixed rail and the telescopic rail, and multiple groups of threaded holes are provided on one side of the telescopic rail.

[0014] By adopting the above technical solution, the positioning bolt can play a role in fixing the telescopic rail after it extends out of the fixed rail.

[0015] Furthermore, universal wheel connecting holes are provided at the four corners of the bottom of the base frame, and internal threads are provided on the inner walls of the universal wheel connecting holes.

[0016] By adopting the above technical solution, a universal wheel can be installed inside the universal wheel connecting hole, and the entire logistics items can be moved by the universal wheel.

[0017] To sum up, the utility model mainly has the following beneficial effects: the lifting and placing plate of the utility model is lifted and lowered relative to the base frame through four sets of telescopic guide rail mechanisms, and at the same time, the locking climbing mechanism can drive the lifting and placing plate to perform lifting operations along the four sets of telescopic guide rail mechanisms. Specifically, the first level height causes the climbing gear of the locking climbing mechanism to rise and fall along the first tooth plate, and the telescopic track can be extended relative to the fixed track. After extension, under the action of the two-way cylinder, the locking climbing mechanism can extend and lock the second tooth plate outside the telescopic track again, so that the climbing gear can stably rise to the second level height along the second tooth plate. As can be seen from the above, while adapting to logistics handling operations at different heights, the lifting process is more stable, effectively avoiding the problem of vehicle shaking or even tilting caused by the overall center of gravity being unstable due to the lifting, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an enlarged cross-sectional view of the present invention;

[0020] Figure 3 It is a schematic diagram of the enlarged partial structure of the utility model;

[0021] Figure 4 This is an enlarged exploded view of the locking and climbing mechanism of the utility model;

[0022] Figure 5 This is an exploded schematic diagram of the telescopic guide rail mechanism of the utility model;

[0023] Figure 6 For this utility model Figure 5 A magnified view of point A;

[0024] Figure 7 It is a structural diagram of the chassis of the utility model.

[0025] In the figure: 1. Base frame; 2. Lifting and placing plate; 3. Telescopic guide rail mechanism; 301. Fixed rail; 302. First gear plate; 303. Telescopic rail; 304. Telescopic chamber; 305. Guide rod; 306. Second gear plate; 307. Positioning bolt; 4. Locking and climbing mechanism; 401. Locking frame; 402. Rotating shaft; 403. Climbing gear; 404. Worm gear; 405. Worm; 406. Transmission cylinder; 407. Transmission rod; 408. Connecting rod; 409. First bevel gear; 410. Motor; 411. Second bevel gear; 412. Locking slider; 413. Bidirectional cylinder; 5. Universal wheel connecting hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] The following describes an embodiment of the present invention based on its overall structure.

[0028] A height-adjustable logistics transport vehicle, such as Figure 1-7 As shown, it includes a base frame 1, a lifting plate 2 is provided on the base frame 1, and telescopic guide rail mechanisms 3 passing through the lifting plate 2 are fixed at the four corners of the top of the base frame 1;

[0029] Two sets of locking climbing mechanisms 4 that cooperate with the telescopic guide rail mechanism 3 are provided at both ends of the bottom of the lifting and placing plate 2. The locking climbing mechanism 4 includes a locking frame 401, a rotating shaft 402, a climbing gear 403, a worm wheel 404 and a worm 405. The four corners of the bottom of the lifting and placing plate 2 are slidably connected with the locking frame 401. The climbing gear 403 and the worm wheel 404 are respectively provided at the two ends and the middle position of one side of the locking frame 401. The climbing gear 403 and the worm wheel 404 are coaxially fixedly connected through the rotating shaft 402, and the worm 405 is located at the top of the worm wheel 404 and meshes with it.

[0030] The locking climbing mechanism 4 also includes a transmission cylinder 406, a transmission rod 407, a connecting rod 408, a first bevel gear 409, a motor 410 and a second bevel gear 411. The motor 410 is installed at the bottom of the lifting plate 2, and the second bevel gear 411 is fixed to the outside of the output shaft of the motor 410. The transmission cylinder 406 is movably connected to the lifting plate 2, and the first bevel gear 409 and the second bevel gear 411 fixed on one side thereof are meshed with each other. The lifting plate 2 is lifted relative to the base frame 1 through the four sets of telescopic guide rail mechanisms 3. At the same time, the locking climbing mechanism 4 can drive the lifting plate 2 to perform lifting operations along the four sets of telescopic guide rail mechanisms 3 in conjunction with the locking climbing mechanism 4.

[0031] The transmission rod 407 is located inside the transmission cylinder 406 and is radially limited and axially slidably connected thereto. The transmission rod 407 and the worm 405 are fixedly connected via a connecting rod 408.

[0032] The locking climbing mechanism 4 also includes a locking slider 412 and a two-way cylinder 413. The two-way cylinder 413 is fixed inside the lifting and placing plate 2. The locking slider 412 and the lifting and placing plate 2 are slidably connected. The inner side of the locking slider 412 is fixedly connected to the output end of the two-way cylinder 413. The bottom of the locking slider 412 is connected to the transmission rod 407 in radial sliding and axial limiting manner.

[0033] The telescopic guide rail mechanism 3 includes a fixed rail 301, a first tooth plate 302, a telescopic rail 303 and a second tooth plate 306. The fixed rail 301 is fixed to the top of the base frame 1. The telescopic rail 303 is located inside the fixed rail 301 and is slidably connected thereto. The first tooth plate 302 and the second tooth plate 306 are respectively fixed to the inner sides of the fixed rail 301 and the telescopic rail 303 and cooperate with the climbing gear 403.

[0034] The telescopic guide rail mechanism 3 also includes a telescopic cavity 304, a guide rod 305 and a positioning bolt 307. A guide rod 305 extending into the telescopic rail 303 is fixed inside the fixed rail 301, and a telescopic cavity 304 cooperating with the guide rod 305 is opened inside the telescopic rail 303. While adapting to logistics handling operations at different heights, the lifting process is more stable, effectively avoiding the problem of vehicle shaking or even tilting caused by the overall center of gravity being unstable due to lifting, and the use effect is better.

[0035] See also Figure 5 and Figure 6 The top of one side of the fixed rail 301 is threadedly connected with a positioning bolt 307 extending into the interior of the telescopic rail 303, and threaded holes that match the positioning bolt 307 are opened on one side of the fixed rail 301 and the telescopic rail 303, and multiple groups of threaded holes are opened on one side of the telescopic rail 303. By setting the above structure, the utility model can fix the telescopic rail 303 after it extends out of the fixed rail 301.

[0036] See also Figure 2 and Figure 7 Universal wheel connection holes 5 are provided at the four corners of the bottom of the base frame 1, and the inner wall of the universal wheel connection hole 5 is provided with an internal thread. By setting the above structure, the utility model can install a universal wheel inside the universal wheel connection hole 5, and then the entire logistics items can be moved by the universal wheel.

[0037] The working principle of the present invention is as follows: when in use, a power supply module can be installed inside the base frame 1, wherein the power supply module can play the role of powering the motor 410 and the bidirectional cylinder 413, wherein universal wheels can be installed inside the four sets of universal wheel connection holes 5 at the bottom of the base frame 1, and then the universal wheels can be used to move the entire carrying logistics items;

[0038] The lifting plate 2 is lifted relative to the base frame 1 by four sets of telescopic guide rail mechanisms 3. At the same time, the locking climbing mechanism 4 can be used to drive the lifting plate 2 to lift along the four sets of telescopic guide rail mechanisms 3.

[0039] Specifically, the first level height enables the climbing gear 403 of the locking climbing mechanism 4 to be raised and lowered along the first toothed plate 302. Specifically, the first level height corresponds to the height of the first toothed plate 302. That is, at this time, the lifting and placing plate 2 can be raised and lowered along the first toothed plate 302 to the first height.

[0040] The telescopic rail 303 can be extended relative to the fixed rail 301. After being extended, under the action of the two-way cylinder 413, the locking climbing mechanism 4 can again extend and lock the second toothed plate 306 outside the telescopic rail 303, so that the climbing gear 403 can stably ascend to the second level along the second toothed plate 306. In detail, the second level height corresponds to the height of the second toothed plate 306, that is, at this time, the lifting and placing plate 2 can be lifted and lowered to the second level along the second toothed plate 306.

[0041] At the same time, the second tooth plate 306 can rise relative to the first tooth plate 302, which can provide a greater lifting height for the lifting and placing plate 2. At the same time, after the second tooth plate 306 is retracted relative to the first tooth plate 302, it will not occupy a large space volume;

[0042] As can be seen from the above, while adapting to logistics handling operations at different heights, the lifting process is more stable, effectively avoiding the problem of vehicle shaking or even tilting caused by the overall center of gravity being unstable due to lifting, and the use effect is better;

[0043] Furthermore, when the telescopic rail 303 drives the second tooth plate 306 to fully extend relative to the fixed rail 301, the tooth grooves at the bottom inner side of the second tooth plate 306 coincide with the tooth grooves at the top inner side of the first tooth plate 302. Therefore, when the climbing gear 403 rises from the first tooth plate 302 to the second tooth plate 306, there will be no tooth collision problem, and the overall passing process is more stable.

[0044] Furthermore, the motor 410 drives the two sets of first bevel gears 409 to rotate via the second bevel gear 411, and the two sets of first bevel gears 409 respectively drive the worm 405 to rotate via the transmission cylinder 406, the transmission rod 407 and the connecting rod 408, wherein the worm 405 and the worm wheel 404 are meshed with each other for transmission, and because the worm wheel 404 and the climbing gear 403 are coaxially transmitted via the rotating shaft 402, the climbing gear 403 can mesh with the gear plate to perform a lifting operation;

[0045] The two worm gears 405 of each locking climbing mechanism 4 rotate in opposite directions, which can drive the two climbing gears 403 to rotate in opposite directions, so that the locking climbing mechanism 4 can perform lifting operations;

[0046] Furthermore, the transmission cylinder 406 and the transmission rod 407 are connected by radial limiting and axial sliding, and under the action of the two-way cylinder 413, the transmission rod 407 and the locking frame 401 can be extended through the locking slider 412, so that the climbing gear 403 can engage with the second tooth plate 306 to avoid separation.

[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A height-adjustable logistics transport vehicle, comprising a chassis (1), characterized in that: A lifting plate (2) is provided above the base frame (1), and telescopic guide rail mechanisms (3) penetrating the lifting plate (2) are fixed at the four corners of the top of the base frame (1); Two sets of locking climbing mechanisms (4) that cooperate with the telescopic guide rail mechanism (3) are provided at both ends of the bottom of the lifting and placing plate (2). The locking climbing mechanism (4) comprises a locking frame (401), a rotating shaft (402), a climbing gear (403), a worm wheel (404) and a worm (405). The four corners of the bottom of the lifting and placing plate (2) are all slidably connected with the locking frame (401). The climbing gear (403) and the worm wheel (404) are respectively provided at both ends and the middle position of one side of the locking frame (401). The climbing gear (403) and the worm wheel (404) are coaxially fixedly connected through the rotating shaft (402), and the worm wheel (405) is located at the top of the worm wheel (404) and meshes with it. The telescopic guide rail mechanism (3) comprises a fixed rail (301), a first tooth plate (302), a telescopic rail (303) and a second tooth plate (306); the fixed rail (301) is fixed to the top of the base frame (1); the telescopic rail (303) is located inside the fixed rail (301) and is slidably connected thereto; and the first tooth plate (302) and the second tooth plate (306) are respectively fixed to the inner sides of the fixed rail (301) and the telescopic rail (303) and cooperate with the climbing gear (403).

2. The height-adjustable logistics transport vehicle according to claim 1, characterized in that: The locking climbing mechanism (4) further comprises a transmission cylinder (406), a transmission rod (407), a connecting rod (408), a first bevel gear (409), a motor (410) and a second bevel gear (411); the motor (410) is mounted on the bottom of the lifting and placing plate (2), and the second bevel gear (411) is fixed on the outside of the output shaft of the motor (410); the transmission cylinder (406) is movably connected to the lifting and placing plate (2), and the first bevel gear (409) fixed on one side thereof and the second bevel gear (411) are meshed with each other.

3. The height-adjustable logistics transport vehicle according to claim 2, characterized in that: The transmission rod (407) is located inside the transmission cylinder (406) and is connected to the transmission cylinder (406) in a radially limited and axially sliding manner. The transmission rod (407) and the worm (405) are fixedly connected via a connecting rod (408).

4. The height-adjustable logistics transport vehicle according to claim 1, characterized in that: The locking climbing mechanism (4) further comprises a locking slider (412) and a bidirectional cylinder (413), wherein the bidirectional cylinder (413) is fixed inside the lifting and placing plate (2), and the locking slider (412) and the lifting and placing plate (2) are in sliding connection, and the inner side of the locking slider (412) and the output end of the bidirectional cylinder (413) are fixedly connected, and the bottom of the locking slider (412) and the transmission rod (407) are in radial sliding and axial limiting connection.

5. The height-adjustable logistics transport vehicle according to claim 1, characterized in that: The telescopic guide rail mechanism (3) further comprises a telescopic cavity (304), a guide rod (305) and a positioning bolt (307); a guide rod (305) extending into the interior of the telescopic rail (303) is fixed inside the fixed rail (301); and a telescopic cavity (304) cooperating with the guide rod (305) is provided inside the telescopic rail (303).

6. The height-adjustable logistics transport vehicle according to claim 5, characterized in that: The top of one side of the fixed track (301) is threadedly connected to a positioning bolt (307) extending into the interior of the telescopic track (303), and one side of the fixed track (301) and the telescopic track (303) is provided with a threaded hole matched with the positioning bolt (307), and one side of the telescopic track (303) is provided with multiple groups of threaded holes.

7. The height-adjustable logistics transport vehicle according to claim 1, characterized in that: Universal wheel connection holes (5) are provided at the four corners of the bottom of the base frame (1), and internal threads are provided on the inner walls of the universal wheel connection holes (5).

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