Adjustable trolley

Abstract

The utility model relates to the technical field of trolleys, and discloses an adjustable trolley which comprises a trolley body, two handle rods of tubular structures are installed on the trolley body, two fixing seats are fixedly connected to the side wall of the trolley body, supporting rods with the longitudinal sections of T-shaped structures are connected into the fixing seats in a sliding mode, and the supporting rods are connected with the trolley body in a sliding mode. The supporting rod is sleeved with a first spring, the two ends of the first spring are fixed to the inner top face of the supporting rod and the upper surface of the fixing base correspondingly, a screwing handle is connected to the interior of the handle rod in a threaded mode, one end of the screwing handle extends to the exterior of the handle rod, and a connecting cylinder is arranged in the handle rod. The cart is provided with a fixing assembly used for fixing the supporting rod. When the adjustable trolley provided by the utility model is applied, a worker can always pull the trolley with two hands, so that the trolley is prevented from sliding under the action of a slope, the potential safety hazard is further reduced, the operation is convenient and simple, and the adjusting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to an adjustable trolley. Background Art

[0002] A tipping trolley is a special type of trolley, usually used for carrying and dumping bulk materials such as soil, gravel, garbage, etc. It is characterized by being equipped with an independent tipping bucket or dumping bucket, which can be tilted by manual or mechanical operation to dump its contents into a designated location.

[0003] After searching, a construction wheelbarrow with a publication number of CN213735013U is disclosed, which includes a wheelbarrow, a calculator for calculating height according to volume, and an adjustable leg unit. The inner wall corresponding to the wheelbarrow is provided with scale lines, a working frame is provided at one end of the wheelbarrow, the calculator is provided above the working frame, and the adjustable leg unit is provided in the working frame. The adjustable leg unit includes a screw rod rotatably provided in the working frame, a nut sleeve sleeved on the screw rod, a sliding rod located on both sides of the screw rod, a sliding sleeve slidably connected to the sliding rod, and a leg. This scheme can control the telescopic length of the leg to adapt to the complex construction road surface of the construction site. However, the above technical scheme still has the following deficiencies when actually used:

[0004] Compared with the common method of fixing the adjustable legs with screws, this prior art can simplify the operating steps and improve the adjustment efficiency. However, in actual operation, when the staff encounters a slope and needs to adjust the height of the legs, the staff needs to hold the handle of the cart with one hand to prevent the cart from sliding under the action of the slope, and use the other hand to screw the screw to achieve the purpose of adjusting the legs. Such operation will increase the difficulty of adjustment and also increase safety hazards. Secondly, this prior art controls the synchronous movement of the two legs through a screw rod, but when encountering an uneven ground and the two legs are at different distances from the ground, this adjustment method can only make one leg contact the ground, affecting the overall stability of the cart and reducing the practicality and flexibility of the cart.

[0005] Therefore, it is necessary to design an adjustable trolley to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and provides an adjustable trolley.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The trolley is provided with two handle bars with tubular structures, two fixing seats are fixedly connected to the side walls of the trolley, a support bar with a T-shaped longitudinal section is slidably connected inside the fixing seats, a spring is sleeved on the support bar, and the two ends of the spring are respectively fixed to the inner top surface of the support bar and the upper surface of the fixing seat, a screw handle is connected to the inner thread of the handle bar, and one end of the screw handle extends to the outside of the handle bar, a connecting tube is provided inside the handle bar, a rotating rod is provided inside the connecting tube, one end of the rotating rod is fixed to the screw handle, and a fixing component for fixing the support bar is provided on the trolley.

[0009] As a preferred technical solution of the utility model, the fixing component includes a cavity arranged inside the side wall of the cart, a card block is provided in the cavity, one side of the card block extends to the interior of the fixing seat, a spring 2 is provided between the side wall of the card block and the inner side of the cavity, a rack is also slidably connected to the interior of the cavity, one end of the connecting tube extends into the cavity, and the connecting tube is rotatably connected to the inner side of the cavity, the longitudinal section of the connecting tube is a U-shaped structure, and the rotating rod is adapted to the shape of the connecting tube, and a gear is fixedly sleeved on the connecting tube located in the cavity, and the gear is meshed with the rack.

[0010] As a preferred technical solution of the utility model, the fixing assembly includes two power connection plates arranged in the connecting tube, one of the power connection plates is fixed to the inner side of the connecting tube, and the other power connection plate is fixed to the rotating rod, the interior of the spring 1 is hollow, and an electrorheological fluid is provided inside the spring 1, and a power supply battery is installed at the bottom of the cart.

[0011] As a preferred technical solution of the utility model, an arc groove matched with the support rod is provided on the side wall of the clamping block close to the support rod, and an inclined surface is provided on the side wall of the clamping block close to the rack.

[0012] As a preferred technical solution of the utility model, the bottom end of the support rod is rotatably connected to a support seat, the longitudinal section of the support seat is a trapezoidal structure, and the support seat is made of rubber.

[0013] As a preferred technical solution of the utility model, the screwing handle is in an L-shaped structure, and an anti-slip sleeve is provided on the screwing handle.

[0014] The utility model has the following beneficial effects:

[0015] 1. Convenient operation: During the adjustment process, the staff can always hold the cart with both hands to prevent the cart from sliding under the slope, thereby reducing safety hazards. The staff can adjust the support rod through a simple rotation action, which is convenient and simple to operate and improves the adjustment efficiency.

[0016] 2. Improved flexibility: The two support rods can be adjusted independently to adapt to different heights of the ground. This design improves the flexibility and adaptability of the cart when used in different venues and ensures the overall stability of the cart. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an adjustable trolley proposed by the utility model;

[0018] Figure 2 It is a schematic diagram of the structure inside the cavity and the handle bar;

[0019] Figure 3 for Figure 2 A magnified view of the structure at A;

[0020] Figure 4 for Figure 2 A magnified view of the structure at B;

[0021] Figure 5 Obtain a three-dimensional cross-sectional view for spring 1;

[0022] Figure 6 It is a structural diagram of the card block.

[0023] In the figure: 1 cart, 2 handle bar, 3 support bar, 4 fixed seat, 5 spring 1, 6 cavity, 7 block, 8 spring 2, 9 rack, 10 gear, 11 connecting tube, 12 rotating rod, 13 screw handle, 14 power board, 15 electrorheological fluid, 16 support seat, 17 power supply battery. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Embodiment 1

[0026] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6, an adjustable trolley, comprising a trolley 1, on which are mounted two handle bars 2 of tubular structure, two fixing seats 4 being fixedly connected to the side walls of the trolley 1, a support bar 3 of T-shaped structure in longitudinal section being slidably connected inside the fixing seat 4, the fixing seat 4 being fixed to the trolley 1 by bolts, so that the support bar 3 can be disassembled when the trolley 1 is stored, thereby reducing the occupied space of the trolley 1, and the support bar 3 can be replaced when damaged, thereby saving costs, a spring 5 is sleeved on the support bar 3, and the two ends of the spring 5 are respectively fixed to the inner top surface of the support bar 3 and the upper surface of the fixing seat 4, a screw handle 13 is connected to the inner thread of the handle bar 2, and one end of the screw handle 13 extends to the outside of the handle bar 2, and when the screw handle 13 is rotated ninety degrees, the screw handle 13 and the handle bar 2 No separation will occur, the screwing handle 13 is in an L-shaped structure, and an anti-slip sleeve is provided on the screwing handle 13, which is convenient for the staff to turn the screwing handle 13, a connecting tube 11 is provided inside the handle rod 2, and a rotating rod 12 is provided inside the connecting tube 11, and one end of the rotating rod 12 is fixed to the screwing handle 13, and the bottom end of the support rod 3 is rotatably connected to a support seat 16, and the longitudinal section of the support seat 16 is a trapezoidal structure, and the support seat 16 can increase the contact area between the device and the ground, especially when the ground is inclined, the support seat 16 can always be in contact with the ground to ensure the stability of the device, and the support seat 16 is made of rubber, when the support rod 3 is supporting the ground, the support seat 16 can play a buffering role on the support rod 3, and prolong the service life of the device, and the cart 1 is provided with a fixing component for fixing the support rod 3;

[0027] The fixing assembly includes a cavity 6 arranged inside the side wall of the cart 1, a card block 7 is arranged in the cavity 6, one side of the card block 7 extends to the inside of the fixing seat 4, and an arc groove adapted to the support rod 3 is arranged on the side wall of the card block 7 close to the support rod 3, so that the contact area between the card block 7 and the support rod 3 can be increased to ensure the stability of the card block 7 fixing the support rod 3. A spring 8 is provided between the side wall of the card block 7 and the inner side of the cavity 6. A rack 9 is also slidably connected to the inside of the cavity 6. One end of the connecting tube 11 extends into the cavity 6, and the connecting tube 11 is connected to the inner side of the cavity 6. The connecting tube 11 is rotatably connected to the inner side of the cavity 6. The longitudinal section of the connecting tube 11 is a U-shaped structure, and the rotating rod 12 is adapted to the shape of the connecting tube 11. A gear 10 is fixedly sleeved on the connecting tube 11 located in the cavity 6. The gear 10 is meshed with the rack 9. A slope is provided on the side wall of the block 7 close to the rack 9. The length of the rack 9 limits the rotation angle of the screwing handle 13. When the screwing handle 13 is rotated ninety degrees, one end of the rack 9 will abut against the cavity 6, thereby ensuring the stability of the screwing handle 13.

[0028] Working principle: When encountering an uneven or inclined ground, the staff keeps holding the screwing handle 13 with both hands, and then rotates the screwing handle 13 by 90 degrees. The screwing handle 13 drives the rotating rod 12 to rotate. Under the mutual limiting action of the connecting cylinder 11 and the rotating rod 12, the connecting cylinder 11 also rotates, and drives the gear 10 to rotate, so that the rack 9 moves upward. Then, under the elastic force of the spring 2 8, the block 7 can be retracted into the cavity 6. At this time, the side wall of the support rod 3 will not be subjected to the force. At this time, under the action of the spring 1 5, the support rod 3 moves and makes the support seat 16 The handle 13 is reversed and turned to make the rack 9 move downward. Under the action of the inclined surface of the block 7, the rack 9 can squeeze the block 7 to move it toward the fixing seat 4, and then contact the support rod 3 to fix the support rod 3. This operation method allows the staff to always hold the trolley 1 with both hands to prevent the trolley 1 from sliding under the action of the slope, thereby reducing safety hazards. The operation is convenient and simple, and the adjustment efficiency is improved. Secondly, the two support rods 3 can be adjusted independently, so that the two support rods 3 can adapt to the ground at different heights, which improves the practicability and flexibility of the device.

[0029] Embodiment 2

[0030] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 , which is different from the first embodiment, is that: the fixing component includes two power connection plates 14 arranged in the connecting tube 11, one of the power connection plates 14 is fixed to the inner side of the connecting tube 11, and the other power connection plate 14 is fixed to the rotating rod 12. The interior of the spring 15 is hollow, and an electrorheological fluid 15 is arranged inside the spring 15. Specifically, the electrorheological fluid 15 is a suspension, which is liquid under normal conditions and will change from liquid to solid under the action of an electric field. It is a prior art and is not an innovative part of the present utility model. No further details will be given here. A rubber layer is provided on the inner side of the spring 15 to isolate the influence of other external electric fields on the electrorheological fluid 15. A power supply battery 17 is installed at the bottom of the cart 1, and the power supply battery 17 is electrically connected to the power connection plate 14.

[0031] The similarities between this embodiment and the first embodiment will not be repeated.

[0032] When the lever 13 is in the state of being moved, the two levers 14 are in the state of being moved, and the spring 13 is in the state of being moved, so that the lever 13 is in the state of being moved, and the spring 13 is in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved, so that the lever 13 is in the state of being moved, and the two levers 14 are in the state of being moved,

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable trolley, comprising a trolley (1), characterized in that: The cart (1) is provided with two handle bars (2) of tubular structure. Two fixing seats (4) are fixedly connected to the side wall of the cart (1). A support bar (3) of T-shaped longitudinal section is slidably connected inside the fixing seat (4). A spring (5) is sleeved on the support bar (3), and the two ends of the spring (5) are respectively fixed to the inner top surface of the support bar (3) and the upper surface of the fixing seat (4). The handle bar (2) is internally threadedly connected with a screw handle (13), and one end of the screw handle (13) extends to the outside of the handle bar (2). A connecting tube (11) is provided inside the handle bar (2), and a rotating rod (12) is provided inside the connecting tube (11). One end of the rotating rod (12) is fixed to the screw handle (13). The cart (1) is provided with a fixing component for fixing the support bar (3).

2. An adjustable trolley according to claim 1, characterized in that: The fixing assembly comprises a cavity (6) arranged inside the side wall of the cart (1), a block (7) is arranged inside the cavity (6), one side of the block (7) extends into the interior of the fixing seat (4), a spring (8) is arranged between the side wall of the block (7) and the inside of the cavity (6), a rack (9) is slidably connected inside the cavity (6), one end of the connecting tube (11) extends into the cavity (6), and the connecting tube (11) is rotatably connected to the inside of the cavity (6), the longitudinal section of the connecting tube (11) is a U-shaped structure, and the rotating rod (12) is adapted to the shape of the connecting tube (11), and a gear (10) is fixedly sleeved on the connecting tube (11) located in the cavity (6), and the gear (10) is meshed with the rack (9).

3. The adjustable trolley according to claim 1, characterized in that: The fixing assembly comprises two power connection plates (14) arranged in the connecting tube (11), one of the power connection plates (14) is fixed to the inner side of the connecting tube (11), and the other power connection plate (14) is fixed to the rotating rod (12); the interior of the spring 1 (5) is hollow, and an electrorheological fluid (15) is arranged inside the spring 1 (5); and a power supply battery (17) is installed at the bottom of the cart (1).

4. The adjustable trolley according to claim 2, characterized in that: An arc-shaped groove matching the support rod (3) is provided on the side wall of the clamping block (7) close to the support rod (3), and an inclined surface is provided on the side wall of the clamping block (7) close to the rack (9).

5. The adjustable trolley according to claim 1, characterized in that: The bottom end of the support rod (3) is rotatably connected to a support seat (16); the longitudinal section of the support seat (16) is a trapezoidal structure, and the support seat (16) is made of rubber.

6. The adjustable trolley according to claim 1, characterized in that: The screwing handle (13) is in an L-shaped structure, and an anti-slip sleeve is provided on the screwing handle (13).

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