Push-and-pull trolley with length of push-and-pull rod convenient to adjust

Abstract

The utility model relates to the technical field of push-and-pull vehicles, in particular to a push-and-pull vehicle convenient to adjust the length of a push-and-pull rod, which comprises a vehicle plate, an adjustable rod and inner fixing rods, a fixing piece is arranged at one end of the top of the vehicle plate, the inner fixing rods are arranged on two sides of the fixing piece, and positioning blocks are sleeved on the outer sides of the inner fixing rods. A through sliding groove is formed in one end of the inner side of the positioning block in a penetrating mode, a side opening groove is formed in the other side of the positioning block, the positioning block and the inner fixing rod form an up-down sliding structure through the through sliding groove, and the inner side of the side opening groove is in shaft connection with an adjustable rod. Clamping grooves are formed in the outer wall of the end, close to the adjustable rod, of the inner fixing rod in an arrayed mode, and a baffle is arranged on one side of the outer wall of the inner fixing rod. The problems that in the prior art, the push-and-pull height of a push-and-pull component of an existing push-and-pull vehicle cannot be well adjusted according to requirements, a user often needs to bend down to conduct push-and-pull operation, labor intensity is increased, and transportation efficiency is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of push - pull carts, and particularly relates to a push - pull cart with a push - pull rod whose length is easy to adjust. Background Technique

[0002] A push - pull cart is a handling vehicle pushed and pulled by human power, usually composed of a vehicle body, wheels, a handle, and a pull rope (some vehicle models may not include a pull rope) and other components. Its structure is simple, but its function is powerful, and it can help people quickly and conveniently carry items.

[0003] The push - pull components of the existing push - pull carts cannot well adjust the push - pull height according to requirements. Users often need to bend down to perform push - pull operations, which will increase the labor intensity and also affect the transportation efficiency.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a push - pull cart with a push - pull rod whose length is easy to adjust is proposed, in order to achieve a more practical value. Content of the Utility Model

[0005] The purpose of the utility model is to provide a push - pull cart with a push - pull rod whose length is easy to adjust, so as to solve the problems raised in the above - mentioned background technique.

[0006] To achieve the above - mentioned purpose, the utility model provides the following technical solution: A push - pull cart with a push - pull rod whose length is easy to adjust, including a vehicle board, an adjustable rod, and an inner fixed rod. One end of the top of the vehicle board is provided with a fixing part, and inner fixed rods are arranged on both sides of the fixing part. A positioning block is sleeved outside the inner fixed rod. A through - sliding groove is opened through one end of the inner side of the positioning block, and a side - opening groove is opened on the other side of the positioning block. The positioning block forms a vertical sliding structure with the inner fixed rod through the through - sliding groove. The adjustable rod is pivotally connected inside the side - opening groove. A plurality of card slots are arranged in a row on the outer wall of one end of the inner fixed rod close to the adjustable rod, and a baffle is arranged on one side of the outer wall of the inner fixed rod.

[0007] The adjustable rod includes a rotating block, a rotating bolt, a protrusion, a clamping plate, and a traction spring. A rotating block is installed at the bottom of the adjustable rod. A protrusion is arranged inside the bottom of the rotating bolt, and a clamping plate is installed at the upper position of the protrusion. A traction spring is arranged at the connection between the clamping plate and the rotating block.

[0008] Further, the clamping plate and the rotating block are pivotally connected, and the rotating block is pivotally connected with the side - opening groove through the rotating bolt.

[0009] Further, a side positioning sleeve is installed outside the inner fixed rod, and the side positioning sleeve forms a clamping connection with the adjustable rod.

[0010] Further, the rotating block is elastically connected between the traction spring and the clamping plate, and the rotating block and the protrusion are of a fixed integrated structure.

[0011] Further, the sizes of the clamping plate and the clamping groove are mutually fitted.

[0012] Further, one side of the bottom of the vehicle board is provided with universal wheels, and the other side of the bottom is provided with positioning wheels, and the surface of the vehicle board is covered with an anti-slip mat;

[0013] Further, an embedded sliding rod can be installed inside the top of the adjustable rod, and an oil pressure positioning component is installed inside the embedded sliding rod. The oil pressure positioning component includes an oil pipe, a piston chamber, a limiting piston and an oil pressure locking member;

[0014] Further, a piston chamber is installed inside the bottom of the embedded sliding rod, and a limiting piston is arranged inside the piston chamber. The outside of the piston chamber is communicated with an oil pipe, and an oil pressure locking member is arranged at the oil inlet end of the oil pipe, and the oil pressure locking member is arranged at the top position of the embedded sliding rod.

[0015] The utility model provides a push-pull cart which is convenient to adjust the length of a push-pull rod, and has the following beneficial effects:

[0016] 1. In the utility model, the combination of the inner fixed rod and the adjustable rod is adopted as the push-pull component of the push-pull cart. It can not only drive the push-pull cart to move through the inner fixed rod, but also when it is necessary to adjust the push-pull height, the adjustable rod can be lifted upward with one hand, and the clamping plate inside the adjustable rod can be clamped to a suitable position to meet the adjustment requirement of the height, meet the portable adjustment of the push-pull rod, and better adapt to the user's needs;

[0017] When the adjustable rod is adjusted, the adjustable rod is slightly rotated inward to disengage the clamping plate from the clamping groove, and then lifted upward for vertical height adjustment. When it moves to a suitable clamping groove position, the clamping plate is clamped tightly in the corresponding clamping groove, and the inner traction spring is used to ensure the fixed position of the clamping plate, which is convenient to maintain the stability during pulling;

[0018] When using the adjustable rod for pushing operation, the clamping plate at the connection end will be clamped tightly in the concave part of the clamping groove under the elastic support of the traction spring to ensure its stability during pushing;

[0019] The whole between the inner fixed rod and the adjustable rod is also secondarily fixed by a side positioning sleeve to ensure the stability of the push-pull component after adjustment. Description of the Drawings

[0020] Referring to the attached drawings, the disclosure of the utility model will become more understandable. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solutions of the utility model and are not intended to limit the protection scope of the utility model. In the drawings:

[0021] Figure 1 This is a front internal structure schematic diagram of a trolley for facilitating the adjustment of the length of a push-pull rod according to the present utility model;

[0022] Figure 2 This is a Figure 1 partial enlarged structure schematic diagram at position A in a trolley for facilitating the adjustment of the length of a push-pull rod according to the present utility model;

[0023] Figure 3 This is a three-dimensional structure schematic diagram of a positioning block of a trolley for facilitating the adjustment of the length of a push-pull rod according to the present utility model;

[0024] Figure 4 This is a structure schematic diagram of an oil pressure positioning assembly of a trolley for facilitating the adjustment of the length of a push-pull rod according to the present utility model.

[0025] In the figure: 1, vehicle board; 2, universal wheel; 3, positioning wheel; 4, anti-slip pad; 5, fixing member; 6, adjustable rod; 601, rotating block; 602, rotating bolt; 603, protrusion; 604, clamping plate; 605, traction spring; 7, inner fixing rod; 701, card slot; 702, baffle; 8, positioning block; 801, through chute; 802, side opening slot; 9, side positioning sleeve; 10, embedded sliding rod; 11, oil pressure positioning assembly; 1101, oil pipe; 1102, piston chamber; 1103, limit piston; 1104, oil pressure locking member. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-3 , the present utility model provides a technical solution: a trolley for facilitating the adjustment of the length of a push-pull rod, including a vehicle board 1, an adjustable rod 6 and an inner fixing rod 7. A fixing member 5 is arranged at one end of the top of the vehicle board 1, and inner fixing rods 7 are arranged on both sides of the fixing member 5. A positioning block 8 is sleeved outside the inner fixing rod 7, and a through chute 801 is opened through one end of the inner side of the positioning block 8, and a side opening slot 802 is opened on the other side of the positioning block 8. The positioning block 8 and the inner fixing rod 7 form an up-and-down sliding structure through the through chute 801, and the adjustable rod 6 is pivotally connected to the inner side of the side opening slot 802. Card slots 701 are arranged in a row on the outer wall of one end of the inner fixing rod 7 close to the adjustable rod 6, and a baffle 702 is arranged on one side of the outer wall of the inner fixing rod 7;

[0028] The adjustable rod 6 includes a rotating block 601, a rotating bolt 602, a protrusion 603, a clamping plate 604, and a traction spring 605. The rotating block 601 is installed at the bottom of the adjustable rod 6, and the protrusion 603 is provided inside the bottom of the rotating bolt 602. The clamping plate 604 is installed at the upper position of the protrusion 603. A traction spring 605 is provided at the connection between the clamping plate 604 and the rotating block 601; the clamping plate 604 and the rotating block 601 are pivotally connected, and the rotating block 601 is pivotally connected to the side opening groove 802 through the rotating bolt 602; a side positioning sleeve 9 is installed on the outer side of the inner fixing rod 7, and a clamping connection is formed between the side positioning sleeve 9 and the adjustable rod 6; the rotating block 601 is elastically connected to the clamping plate 604 through the traction spring 605, and the rotating block 601 and the protrusion 603 are of a fixed integrated structure; the sizes of the clamping plate 604 and the card slot 701 are mutually fitted; one side of the bottom of the vehicle board 1 is provided with a universal wheel 2, and the other side of the bottom is provided with a positioning wheel 3, and an anti-slip mat 4 is laid on the surface of the vehicle board 1;

[0029] By adopting the combination of the inner fixing rod 7 and the adjustable rod 6 as the pushing and pulling assembly of the trolley, the trolley can be driven to move through the inner fixing rod 7. When it is necessary to adjust the pushing and pulling height, the adjustable rod 6 can be lifted upward with one hand, and the clamping plate 604 inside the adjustable rod 6 can be clamped to a suitable position to meet the height adjustment requirements, meet the portable adjustment of the push-pull rod, and better meet the user's needs;

[0030] When adjusting the adjustable rod 6, the adjustable rod 6 is slightly rotated inward to disengage the clamping plate 604 from the card slot 701, and then lifted upward for vertical height adjustment. When moving to the appropriate position of the card slot 701, the clamping plate 604 is clamped tightly in the corresponding card slot 701, and the inner traction spring 605 is used to ensure the fixed position of the clamping plate 604, which is convenient for maintaining the stability during pulling;

[0031] When using the adjustable rod 6 for pushing operation, the clamping plate 604 at the connection end will be clamped in the concave part of the card slot 701 under the elastic support of the traction spring 605 to ensure its stability during pushing;

[0032] The entire inner fixing rod 7 and the adjustable rod 6 are also secondarily fixed by the side positioning sleeve 9 to ensure the stability of the pushing and pulling assembly after adjustment;

[0033] The inner side of the bottom of the embedded sliding rod 10 is provided with a piston chamber 1102, and a limiting piston 1103 is arranged inside the piston chamber 1102. The outer side of the piston chamber 1102 is communicated with an oil pipe 1101, and an oil pressure locking member 1104 is arranged at the oil inlet end of the oil pipe 1101, and the oil pressure locking member 1104 is arranged at the top position of the embedded sliding rod 10;

[0034] By manually holding the hydraulic pressure locking member 1104, the hydraulic oil in the hydraulic pressure locking member 1104 is transmitted through the oil pipe 1101. During the transmission, continuous pressure is applied to squeeze the limit piston 1103 in the lowermost piston chamber 1102, so that the limit piston 1103 protrudes outwards and can be fitted into the card slot inside the adjustable rod 6, realizing the fitting connection between the adjustable rod 6 and the embedded sliding rod 10. When the height of the adjustable rod 6 needs to be adjusted, only need to loosen the hydraulic pressure locking member 1104, pull the embedded sliding rod 10 to move upwards as a whole, and change the position of the card slot to realize the length adjustment.

[0035] As mentioned above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be thought of by those skilled in the art within the technical scope disclosed by the present utility model without creative labor should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A trolley with a push-pull rod whose length is easy to adjust, comprising a vehicle board (1), an adjustable rod (6) and an inner fixing rod (7), characterized in that: One end of the top of the car board (1) is provided with a fixing member (5), and inner fixing rods (7) are arranged on both sides of the fixing member (5). A positioning block (8) is sleeved outside the inner fixing rod (7). A through chute (801) is formed through one end of the inner side of the positioning block (8), and a side opening groove (802) is formed on the other side of the positioning block (8). The positioning block (8) and the inner fixing rod (7) form a vertically sliding structure through the through chute (801). An adjustable rod (6) is axially connected inside the side opening groove (802). A plurality of card slots (701) are arranged on the outer wall of one end of the inner fixing rod (7) close to the adjustable rod (6). A baffle (702) is arranged on one side of the outer wall of the inner fixing rod (7). The adjustable rod (6) includes a rotating block (601), a rotating bolt (602), a protrusion (603), a clamping plate (604) and a traction spring (605). The rotating block (601) is installed at the bottom of the adjustable rod (6). The protrusion (603) is arranged inside the bottom of the rotating bolt (602), and the clamping plate (604) is installed at the upper position of the protrusion (603). A traction spring (605) is arranged at the connection between the clamping plate (604) and the rotating block (601). An embedded sliding rod (10) can be installed inside the top of the adjustable rod (6). An oil pressure positioning component (11) is installed inside the embedded sliding rod (10). The oil pressure positioning component (11) includes an oil pipe (1101), a piston chamber (1102), a limit piston (1103) and an oil pressure locking member (1104).

2. The push-pull cart capable of conveniently adjusting the length of the push-pull rod according to claim 1, wherein, The clamping plate (604) and the rotating block (601) are axially connected. The rotating block (601) and the side opening groove (802) are axially connected through the rotating bolt (602).

3. A trolley with a push-pull rod whose length is conveniently adjustable according to claim 1, characterized in that, A side positioning sleeve (9) is installed outside the inner fixing rod (7), and the side positioning sleeve (9) and the adjustable rod (6) form a clamping connection.

4. A trolley facilitating adjustment of the length of a push-pull rod according to claim 1, characterized in that The rotating block (601) and the clamping plate (604) are elastically connected through the traction spring (605). The rotating block (601) and the protrusion (603) are integrally fixed.

5. A trolley with a push-pull rod whose length is conveniently adjustable according to claim 1, characterized in that, The sizes of the clamping plate (604) and the card slots (701) are mutually fitted.

6. A trolley with a push-pull rod whose length is conveniently adjustable according to claim 1, characterized in that, One side of the bottom of the car board (1) is provided with a universal wheel (2), and the other side of the bottom is provided with a positioning wheel (3). An anti-slip mat (4) is laid on the surface of the car board (1).

7. A trolley with a push-pull rod whose length is easily adjustable according to claim 1, characterized in that The piston chamber (1102) is installed inside the bottom of the embedded sliding rod (10). The limit piston (1103) is arranged inside the piston chamber (1102). The oil pipe (1101) communicates with the outside of the piston chamber (1102). The oil inlet end of the oil pipe (1101) is provided with the oil pressure locking member (1104), and the oil pressure locking member (1104) is arranged at the top position of the embedded sliding rod (10).

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