Foldable warehouse vehicle

Abstract

The utility model provides a foldable warehouse car which comprises a car frame, a bearing plate is installed on the front side of the bottom end of the car frame, trundles are installed on the rear side of the bottom end of the car frame, a pushing handle is arranged at the top end of the car frame, and the pushing handle is connected with the car frame in a sliding mode and can slide up and down relative to the car frame. The bearing plate is rotationally connected with the bottom end of the frame and can rotate relative to the frame in a relatively parallel and relatively vertical range, a supporting frame is connected to the rear side of the frame, and when the frame is transversely placed relative to the ground, the supporting frame is in contact with the ground to support the frame. The goods shelf has the advantages that goods can be supported when the bearing plates are unfolded, and surrounding objects can be prevented from being scratched when the bearing plates are folded; the length of the frame can be extended by pushing the handle, and the comfort level of a user can also be improved; the supporting frame enables the included angle between the frame and the ground to be 10-30 degrees, goods can make contact with the bearing plate in advance, and when the top end of the frame is lifted to enter a transportation mode, the situation that the impact force of the goods on the bearing plate is too large, and consequently the bearing plate is damaged can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of warehouse cargo transportation, and more specifically, to a foldable warehouse vehicle. Background Art

[0002] The so-called warehouse refers to a place where products and items are temporarily stored due to various pressures during the production or circulation of products. When the goods in the warehouse are transferred, a warehouse truck is needed for transportation.

[0003] In the prior art, a warehouse truck is generally provided with a frame, a cargo platform at the front bottom of the frame, and wheels at the rear bottom of the frame. After the cargo is placed on the cargo platform, the warehouse truck is tilted and then moved to a suitable position for unloading.

[0004] For example, the Chinese utility model patent with patent number 202021358933.5 and the invention name is a warehouse truck for transporting warehouse goods, which includes a frame, a load-bearing plate fixedly installed at the bottom end of the frame, and extension columns fixedly installed on the left and right sides of the bottom end of the load-bearing plate. A slide groove is provided at the top of the extension column, and a slider is movably connected to the inside of the slide groove. A splint is fixedly installed at the top of the slider. There are two splints, and a buffer plate is fixedly installed at the relatively close end of the two splints.

[0005] Although the above technical solution has the advantage of being able to transport larger volumes of cargo, it still has many shortcomings. For example, the frame length cannot be adjusted, which will cause different physical sensations for users of different heights. There is a lack of a support structure when the frame is laid flat, which makes it inconvenient to unload the cargo when the frame is laid flat. There is still a lot of room for improvement. Summary of the Invention

[0006] The purpose of the invention of the utility model is to address the deficiencies of the existing technology and to provide a foldable cargo truck with a frame that can be adjusted in length, which can be comfortably operated by users of different heights, has stable support when the frame is laid flat, and is convenient for unloading.

[0007] The utility model is achieved through the following technical solutions.

[0008] The utility model provides a foldable cargo truck, comprising a frame, a load-bearing plate installed on the front side of the bottom end of the frame, casters installed on the rear side of the bottom end of the frame, a pushing handle provided on the top end of the frame, the pushing handle being slidably connected to the frame and capable of sliding up and down relative to the frame, the load-bearing plate being rotatably connected to the bottom end of the frame and the load-bearing plate being able to rotate relative to the frame within a range of relative parallelism and relative verticality, a support frame being connected to the rear side of the frame, and when the support frame contacts the ground to support the frame, the angle between the frame and the ground is 10-30 degrees.

[0009] In the above technical solution, when the load-bearing plate is in a relatively vertical position relative to the frame, it can carry and transport goods. When the load-bearing plate is in a relatively parallel position relative to the frame, the overall thickness of the cargo truck can be reduced to prevent the load-bearing plate from scraping surrounding objects when empty. When the height of the goods to be transported is relatively high or the user is relatively tall, the push handle can be slid upward relative to the frame to extend the length of the frame, which can better transport the goods or improve the comfort of the user. When loading goods or when the goods are delivered to the destination and need to be unloaded, the frame can be placed horizontally relative to the ground. When the support frame contacts the ground to support the frame, the frame is not parallel to the ground, which can make the goods contact the load-bearing plate in advance. The load-bearing plate will exert a certain supporting force on the goods. When the top of the frame is lifted to enter the transportation mode, the impact force of the goods on the load-bearing plate can be avoided to be too large, causing damage to the load-bearing plate.

[0010] Preferably, the vehicle frame includes two frame tubes arranged parallel to each other, each of the frame tubes being hollow. A frame flat tube is provided above the two frame tubes, with both ends of the flat tube being connected and fixed to the two frame tubes. A frame cross tube is provided midway between the two frame tubes, with both ends of the cross tube being connected and fixed to the two frame tubes. A load-bearing plate reinforcement tube is provided at the bottom end of the frame tube on the side opposite the load-bearing plate, with both ends of the load-bearing plate reinforcement tube being connected and fixed to the two frame tubes. In this technical solution, the above-mentioned structural arrangement simplifies the frame structure, saves frame material, and maintains frame strength.

[0011] Preferably, the caster is mounted to the bottom end of the frame via a caster frame. The caster frame includes an axle and a fixing seat. The axle passes through two fixing seats respectively fixed to the bottom ends of the two frame tubes and is rotatably connected to the fixing seat. The caster is mounted at the end of the axle and located outside the fixing seat. In this technical solution, the axle is supported by the two fixing seats. When the frame is loaded, the force on the axle is more evenly distributed, and the load-bearing capacity is stronger. The two casters mounted at both ends of the axle are more stable during operation.

[0012] Preferably, the fixing seat includes a baffle and a connecting arm, the front end of the connecting arm being fixedly connected to the rear side of the baffle, the inner side of the connecting arm being provided with a notch that cooperates with the frame tube, the connecting arm being engaged with the frame tube through the notch and then being fixed to the frame tube by bolts passing through the connecting arm and the frame tube, the rear end of the connecting arm being provided with a support frame connection socket, and the width of the baffle extending outward from the outer side of the connecting arm being set to be greater than the width of the caster. In this technical solution, the baffle can prevent cargo from contacting the caster, and the connecting arm being engaged with the frame tube through the notch and then being fixed to the frame tube by bolts passing through the connecting arm and the frame tube, so that the connection between the connecting arm and the frame tube is more secure and prevents displacement, thereby meeting the maximum load limit that the frame can withstand.

[0013] Preferably, the support frame includes two groups of support tubes, including a first support tube, a second support tube, and a third support tube. The two ends of the second support tube are respectively connected to the bottom ends of the first support tube and the third support tube. The top end of the first support tube is inserted into the support frame connection socket and then fixed to the connecting arm by a connecting nail. The top end of the third support tube is connected and fixed to the frame tube near the frame flat tube by a connecting nail. The second support tube is used to contact the ground to support the frame. The two groups of support tubes are arranged in parallel. A support frame reinforcement tube is arranged between the two third support tubes of the two groups of support tubes. The two ends of the support frame reinforcement tube are respectively connected and fixed to the two third support tubes. In this technical solution, the length of the second support tube can be reasonably designed according to the length of the frame. The entire second support tube is used to contact the ground to support the frame. The contact area between the support frame and the ground is larger, and the support frame supports the frame more stably, which is conducive to increasing the maximum load limit that the frame can withstand.

[0014] Preferably, the length of the third support tube is set to be greater than the length of the first support tube, and the angle between the second support tube and the first support tube, as well as the angle between the second support tube and the third support tube, are both obtuse angles. When the second support tube contacts the ground to support the frame, the angle between the frame and the ground is 20 degrees. In this technical solution, the length of the third support tube is set to be greater than the length of the first support tube, so that when the second support tube contacts the ground to support the frame, the frame and the ground are not parallel, and the angle between the frame and the ground is 10-30 degrees. When the frame is loaded with cargo, it is easier to push the cargo toward the load plate, so that the cargo contacts the load plate in advance. The load plate will exert a certain supporting force on the cargo. When the top of the frame is lifted to enter the transport mode, the impact force of the cargo on the load plate can be cushioned, thereby preventing the load plate from being damaged due to excessive impact force of the cargo on the load plate.

[0015] Preferably, a protective cover made of a plastic material is provided on the side of the second support tube that contacts the ground. When the outer side of the protective cover contacts the ground, the wheel surface of the caster is either off the ground or just in contact with the ground. In this technical solution, the protective cover can reduce wear on the second support tube and facilitate replacement of the protective cover when worn. The contact of the plastic material protective cover with the ground can also reduce noise.

[0016] Preferably, the rear side of the support plate is provided with a clearance opening at a position corresponding to the frame tube. Connecting plates are provided on either side of the clearance opening, disposed vertically relative to the support plate. The support plate is rotatably connected to the frame tube via bolts passing through the connecting plates and the frame tube. In this technical solution, the provision of the clearance opening and the connecting plates facilitates connection between the support plate and the frame tube.

[0017] Preferably, the push handle comprises two parallel handle tubes, the bottom ends of which are inserted into the frame tubes from the top ends thereof, and the top ends of which are connected to a grip. A handle reinforcement tube is provided between the two handle tubes near the top ends thereof, and the ends of the handle reinforcement tube are respectively connected and fixed to the two handle tubes. In this technical solution, the handle tubes are inserted into the frame tubes to enable relative sliding, and the grip connected to the top ends of the handle tubes facilitates the user's operation of the push handles and the linked operation of the frame.

[0018] The spring is arranged at the bottom of the button to provide elastic force for returning the button upward, the top end of the spring abuts against the bottom end of the button, and the bottom end of the spring abuts against the frame flat tube. In this technical solution, the push handle and the frame can be locked and unlocked through the handle locking mechanism, which makes it easy to adjust the length of the push handle pulled out relative to the frame to make the operation more comfortable, and to lock the push handle and the frame for easy operation during transportation.

[0019] The beneficial effects of the present invention are that the load-bearing plate can support the goods when it is opened, and can prevent the load-bearing plate from scratching surrounding objects when it is empty when it is folded; the push handle can slide relative to the frame to extend the length of the frame and improve the comfort of the user; the support frame can make the angle between the frame and the ground 10-30 degrees, and when the frame is loaded with goods, the goods can be in pre-contact with the load-bearing plate, and when the top end of the frame is lifted to enter the transport mode, the impact force of the goods on the load-bearing plate can be prevented from being too large, which may cause damage to the load-bearing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model when the push handle and the carrying plate are both opened;

[0021] Figure 2 This is a structural diagram of the utility model when the push handle and the carrying plate are both folded;

[0022] Figure 3 This is a schematic structural diagram of the frame of the utility model;

[0023] Figure 4 This is a structural diagram of the caster frame of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the support frame of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the utility model when the support frame is in contact with the ground and the frame is placed horizontally;

[0026] Figure 7 This is a structural diagram of the utility model showing the coordinated installation of the load-bearing plate and the vehicle frame;

[0027] Figure 8 This is a schematic diagram of the structure of the support frame separated from the vehicle frame when the casters are omitted in the present invention;

[0028] Figure 9 This is a structural diagram of the push handle locking mechanism of the utility model. DETAILED DESCRIPTION

[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the accompanying drawings. The positional relationships depicted in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0030] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0031] Example 1

[0032] The utility model provides a foldable cargo truck. Figure 1 and Figure 2 As shown, it includes a frame 1, a load-bearing plate 2 is installed on the front side of the bottom end of the frame 1, a caster 3 is installed on the rear side of the bottom end of the frame 1, a push handle 4 is provided on the top of the frame 1, the push handle 4 is slidably connected to the frame 1 and can slide up and down relative to the frame 1, the load-bearing plate 2 is rotatably connected to the bottom end of the frame 1 and the load-bearing plate 2 can rotate relative to the frame 1 within the range of 0-90 degrees in a relatively parallel and relatively vertical direction, and a support frame 5 is connected to the rear side of the frame 1. When the support frame 5 contacts the ground to support the frame 1, the angle between the frame 1 and the ground is 10-30 degrees. Figure 3As shown, the vehicle frame 1 includes two frame tubes 11 arranged parallel to each other, and the frame tubes 11 are hollow structures. A frame flat tube 12 is provided at the upper part between the two frame tubes 11, and the two ends of the frame flat tube 12 are respectively connected and fixed to the two frame tubes 11. Two frame cross tubes 13 are provided at the middle part between the two frame tubes 11, and the two ends of the frame cross tube 13 are respectively connected and fixed to the two frame tubes 11. A load-bearing plate reinforcement tube 14 is provided at the bottom end of the frame tube 11 on the side opposite to the load-bearing plate 2. The length of the load-bearing plate reinforcement tube 14 is greater than the distance between the inner sides of the two frame tubes, and the two ends of the load-bearing plate reinforcement tube 14 are respectively connected and fixed to the two frame tubes 11.

[0033] In this embodiment, if Figure 4 As shown, the caster 3 is mounted on the bottom end of the vehicle frame 1 via a caster frame. The caster frame includes an axle 7 and a fixing seat 8. The axle 7 passes through two fixing seats 8 respectively fixed to the bottom ends of two frame tubes 11 and is rotatably connected to the fixing seats 8. The caster 3 is mounted on the end of the axle 7 and is located outside the fixing seats 8. The fixing seat 8 includes a baffle 81 and a connecting arm 82. The front end of the connecting arm 82 is connected and fixed to the rear side of the baffle 81. The inner side of the connecting arm 82 is provided with a recess that cooperates with the frame tube 11. The connecting arm 82 is engaged with the frame tube 11 through the recess and is then connected and fixed to the frame tube 11 by bolts passing through the connecting arm 82 and the frame tube 11. The rear end of the connecting arm 82 is provided with a support frame connection socket 821. The width of the baffle 81 extending outward from the outer side of the connecting arm 82 is set to be larger than the width of the caster 3, so as to shield the wheel surface of the caster 3 and prevent cargo placed on the vehicle frame 1 from contacting the wheel surface of the caster 3.

[0034] In this embodiment, if Figure 5As shown, the support frame 5 includes two groups of support tubes, the support tubes include a first support tube 51, a second support tube 52 and a third support tube 53, and the length of the third support tube 53 is set to be greater than the length of the first support tube 51, the two ends of the second support tube 52 are respectively connected to the bottom ends of the first support tube 51 and the third support tube 53, and the angles between the second support tube 52 and the first support tube 51, and the angles between the second support tube 52 and the third support tube 53 are both obtuse angles, the top end of the first support tube 51 is inserted into the support frame connection socket 821 and is connected and fixed to the connecting arm 82 by a connecting nail, and the third support tube 53 is connected to the first support tube 51. The top end of the tube 53 is connected and fixed to the frame tube 11 near the frame flat tube 12 through a connecting nail. The frame tube 11 is provided with a connecting piece 111 at the position connected to the top end of the third support tube 53. The connecting piece 111 is connected and fixed to the frame tube 11 and the connecting piece 111 is bent to form an assembly hole. The top end of the third support tube 53 is connected and fixed to the frame tube 11 through a connecting nail passing through the assembly hole of the connecting piece 111. The two groups of support tubes are arranged in parallel. A support frame reinforcement tube 54 is provided between the two third support tubes 53 of the two groups of support tubes. The two ends of the support frame reinforcement tube 54 are respectively connected and fixed to the two third support tubes 53. The second support tube 52 is used to contact the ground to support the frame 1. When the second support tube 52 contacts the ground to support the frame 1, the angle between the frame 1 and the ground is 20 degrees. When the frame 1 is loaded with goods, it is easier to push the goods toward the load-bearing plate 2 so that the goods are in pre-contact with the load-bearing plate 2. The load-bearing plate 2 will exert a certain supporting force on the goods. When the top end of the frame 1 is lifted to enter the transport mode, the impact force of the goods on the load-bearing plate 2 can be cushioned to avoid excessive impact force on the load-bearing plate 2, thereby preventing damage to the load-bearing plate 2.

[0035] As a further improvement, Figure 5 and Figure 6 As shown, the side of the second support tube 52 in contact with the ground is covered with a protective cover 55 made of plastic material. When the outer side of the protective cover 55 is in contact with the ground, the wheel surface of the caster 3 is off the ground or just in contact with the ground.

[0036] Example 2

[0037] The structure of this embodiment is similar to that of embodiment 1, except that Figure 8 The pushing handle 4 includes two handle tubes 41 arranged parallel to each other. The bottom ends of the handle tubes 41 are inserted into the frame tube 11 from the top of the frame tube 11. The top of the handle tube 41 is connected to a grip 42. A handle reinforcement tube 43 is provided between the two handle tubes 41 near the top of the handle tube 41. The two ends of the handle reinforcement tube 43 are respectively connected and fixed to the two handle tubes 41.

[0038] As a further improvement, Figure 9As shown, a push handle locking mechanism 6 is provided at the top of the frame 1 at a position corresponding to the frame flat tube 12. The push handle locking mechanism 6 includes a front splint 61, a rear splint 62, a button 63, a locking rod 64 and a spring 65. The front splint 61 and the rear splint 62 are respectively provided on the front and rear sides of the frame 1 and the two ends of the front splint 61 and the rear splint 62 are respectively clamped on the two frame tubes 11 and fixed to the frame tubes 11 by connecting nails. The frame flat tube 12 is located at the lower side of the front splint 61 and the rear splint 62. The frame flat tube 12 has a limiting effect on the front splint 61 and the rear splint 62 in the upper and lower directions. The button 63 is provided on the upper side of the front splint 61 and the rear splint 62 and The top end of the button 63 extends to the outside of the front splint 61 and the rear splint 62. The button 63 is provided with a left slide groove and a right slide groove. The left and right slide grooves form an eight-shaped shape. The left slide groove and the right slide groove are respectively slidably connected to the end of a locking rod 64. When the button 63 is pressed downward, the left slide groove and the right slide groove can drive the two locking rods 64 to approach each other and disengage from the jack provided in the tube wall of the frame tube 11 and the lock hole provided in the tube wall of the handle tube 41. The handle tube 41 is provided with several lock holes at intervals from top to bottom. The spring 65 is provided at the bottom of the button 63 to provide elastic force for the button 63 to reset upward. The top end of the spring 65 is against the bottom of the button 63, and the bottom end of the spring 65 is against the frame flat tube 12.

[0039] Example 3

[0040] The structure of the present invention is similar to that of Example 2, except that Figure 7 As shown, the rear side of the supporting plate 2 is provided with an avoidance opening 21 at a position corresponding to the frame tube 11, and connecting plates 22 vertically arranged relative to the supporting plate 2 are provided on both sides of the avoidance opening 21. The supporting plate 2 is rotatably connected to the frame tube 11 by bolts passing through the connecting plate 22 and the frame tube 11.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A foldable cargo truck, comprising a frame, a load-bearing plate mounted on the front bottom end of the frame, and casters mounted on the rear bottom end of the frame, characterized in that: The top of the frame is provided with a pushing handle, which is slidably connected to the frame and can slide up and down relative to the frame. The supporting plate is rotatably connected to the bottom end of the frame and can rotate relative to the frame within a range of relative parallelism and relative verticality. The rear side of the frame is connected to a supporting frame. When the supporting frame contacts the ground to support the frame, the angle between the frame and the ground is 10-30 degrees.

2. The folding cargo truck according to claim 1, characterized in that: The frame includes two frame tubes arranged parallel to each other, and the frame tubes are hollow structures. A frame flat tube is provided at the upper part between the two frame tubes, and two ends of the frame flat tube are respectively connected and fixed to the two frame tubes. A frame cross tube is provided in the middle part between the two frame tubes, and two ends of the frame cross tube are respectively connected and fixed to the two frame tubes. A load-bearing plate reinforcement tube is provided at the bottom end of the frame tube on the side opposite to the load-bearing plate, and two ends of the load-bearing plate reinforcement tube are respectively connected and fixed to the two frame tubes.

3. The folding cargo truck according to claim 2, characterized in that: The caster is installed at the bottom end of the frame through a caster frame. The caster frame includes a wheel axle and a fixed seat. The wheel axle passes through two fixed seats respectively fixed at the bottom ends of two frame tubes and is rotatably connected to the fixed seat. The caster is installed at the end of the wheel axle and is located on the outside of the fixed seat.

4. The folding cargo truck according to claim 3, characterized in that: The fixing seat includes a baffle and a connecting arm, the front end of the connecting arm is connected and fixed to the rear side of the baffle, the inner side of the connecting arm is provided with a recess that cooperates with the frame tube, the connecting arm is engaged with the frame tube through the recess and then connected and fixed to the frame tube by a bolt passing through the connecting arm and the frame tube, the rear end of the connecting arm is provided with a support frame connecting socket, and the width of the baffle extending outward relative to the outer side of the connecting arm is set to be greater than the width of the caster.

5. The foldable cargo truck according to claim 4, characterized in that: The support frame includes two groups of support tubes, and the support tubes include a first support tube, a second support tube and a third support tube. The two ends of the second support tube are respectively connected to the bottom ends of the first support tube and the third support tube. The top end of the first support tube is inserted into the support frame connecting socket and is connected and fixed to the connecting arm through a connecting nail. The top end of the third support tube is connected and fixed to the frame tube near the frame flat tube through the connecting nail. The second support tube is used to contact the ground to support the frame. The two groups of support tubes are arranged in parallel. A support frame reinforcement tube is provided between the two third support tubes of the two groups of support tubes. The two ends of the support frame reinforcement tube are respectively connected and fixed to the two third support tubes.

6. The foldable cargo truck according to claim 5, characterized in that: The length of the third support tube is set to be greater than that of the first support tube, and the angle between the second support tube and the first support tube, as well as the angle between the second support tube and the third support tube, are both obtuse angles. When the second support tube contacts the ground to support the frame, the angle between the frame and the ground is 20 degrees.

7. The foldable cargo truck according to claim 6, characterized in that: The side of the second support tube in contact with the ground is sheathed with a protective cover made of plastic material. When the outer side of the protective cover is in contact with the ground, the wheel surface of the caster is separated from the ground or just in contact with the ground.

8. The foldable cargo truck according to claim 2, characterized in that: The rear side of the supporting plate is provided with an avoidance opening at a position corresponding to the frame tube, and connecting plates vertically arranged relative to the supporting plate are provided on both sides of the avoidance opening. The supporting plate is rotatably connected to the frame tube by bolts passing through the connecting plate and the frame tube.

9. The folding cargo truck according to any one of claims 2 to 8, characterized in that: The pushing handle includes two handle tubes arranged parallel to each other, the bottom ends of the handle tubes are inserted into the frame tube from the top end of the frame tube, the top end of the handle tubes is connected to the grip, and a handle reinforcement tube is provided between the two handle tubes near the top end of the handle tubes, and the two ends of the handle reinforcement tube are respectively connected and fixed to the two handle tubes.

10. The foldable cargo truck according to claim 9, characterized in that: The top of the bicycle frame is provided with a push handle locking mechanism at a position corresponding to the frame flat tube, and the push handle locking mechanism includes a front splint, a rear splint, a button, a locking rod and a spring, the front splint and the rear splint are respectively provided at the front and rear sides of the bicycle frame, and the two ends of the front splint and the rear splint are respectively clamped on the two frame tubes and fixed to the frame tube by connecting nails, the frame flat tube is located at the lower side of the front splint and the rear splint, the button is provided at the upper side of the front splint and the rear splint, and the top end of the button extends to the outside of the front splint and the rear splint, and the left and right sides of the button are respectively connected to a locking rod, when the button is pressed downward, the two locking rods can be driven to approach each other and disengage from the insertion hole provided on the tube wall of the frame tube and the locking hole provided on the tube wall of the handle tube, the spring is provided at the bottom of the button to provide elastic force for returning the button upward, the top end of the spring abuts against the bottom end of the button, and the bottom end of the spring abuts against the frame flat tube.

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