Self-locking trolley wheel

Abstract

The utility model relates to the technical field of self-locking trolley wheels, in particular to a self-locking trolley wheel which comprises a trolley body, mounting seats are fixedly mounted at four corners of the bottom of the trolley body, and self-locking universal wheels are rotatably connected to the bottoms of the four mounting seats. Protection frames are fixedly installed on the outer sides of the four sets of self-locking type universal wheels, mounting plates are fixedly connected to the top ends of the protection frames, the trolley further comprises locking mechanisms, the locking mechanisms are fixedly installed on the left side and the right side of the trolley body, and the locking mechanisms are used for fixing the mounting plates on the same side of the trolley body. The two sets of hand push rods are fixedly installed at the rear end of the top of the trolley body, a reinforcing rod is fixedly connected between the two sets of hand push rods, and compared with an existing self-locking trolley wheel, the overall stability of the self-locking trolley wheel can be improved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of self-locking trolley wheels, in particular to a self-locking trolley wheel. Background Art

[0002] A trolley is a transport vehicle that is pushed and pulled by manpower. It is the ancestor of all vehicles. Although the material handling technology of trolleys continues to develop, trolleys are still used as an indispensable transport tool. Trolleys are widely used in production and life because they are low in cost, simple to maintain, easy to operate, and light in weight. They can work in places where motor vehicles are inconvenient to use, and are very convenient for transporting lighter items over short distances.

[0003] Wheels are an indispensable part of a trolley. Generally, the front wheels are fixed and the rear wheels are universal wheels. Self-locking means that the trolley is fixed by locking the wheels. Currently, the wheel locking of trolleys is only achieved by the self-locking universal wheels themselves. The universal wheels are equipped with brake locking devices, which can be fixed by pressing or rotating the locking device. Although this method can stop the rotation of the wheels, the universal wheels can still rotate by themselves, which may cause them to rotate, resulting in poor stability.

[0004] Therefore, it is particularly important to design a self-locking trolley wheel to solve the above-mentioned defects. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model designs a self-locking trolley wheel, which aims to solve the technical problem that although the self-locking trolley wheel in the prior art can stop the rotation of the wheel, the universal wheel can still rotate itself, which may cause it to rotate and lead to poor stability.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-locking trolley wheel comprises a trolley body, four corners of the bottom of the trolley body are fixedly mounted with mounting seats, the bottoms of the four groups of mounting seats are rotatably connected with self-locking universal wheels, the outer sides of the four groups of self-locking universal wheels are fixedly mounted with protective frames, the top of the protective frames are fixedly connected with mounting plates, and further comprises:

[0008] The locking mechanism is fixedly mounted on the left and right sides of the trolley body, and is used to fix the mounting plate on the same side of the trolley body.

[0009] As a preferred solution of the utility model, two groups of push rods are fixedly installed at the rear end of the top of the trolley body, and a reinforcing rod is fixedly connected between the two groups of push rods.

[0010] As a preferred solution of the utility model, the four corners at the top of the four groups of self-locking universal wheels are threadedly connected with mounting screws, the four groups of mounting screws are fixedly connected to the mounting seats, and the top ends of the four groups of mounting screws are threadedly connected to the bottom of the trolley body.

[0011] As a preferred solution of the utility model, scrapers are fixedly connected to the front and rear ends of the inner side of the protective frame, and two groups of scrapers are provided with inclined blade edges at one end close to the self-locking universal wheel.

[0012] As a preferred solution of the utility model, the mounting plate is fixedly connected to the top of the protection frame, and the top of the mounting plate is fixedly connected to the self-locking universal wheel via a fixing screw.

[0013] As a preferred solution of the utility model, the locking mechanism includes a first fixed plate, an adjusting box, a driving gear, a fixed rod, a second fixed plate and a sliding sleeve. The first fixed plate is fixedly installed in the middle of the left and right sides of the trolley body, the adjusting box is fixedly installed in the middle of the bottom of the first fixed plate, the driving gear is rotatably connected to the middle of the inside of the adjusting box, the fixed rod is symmetrically installed on the upper and lower sides of the driving gear and is slidably connected to the adjusting box, the second fixed plate is fixedly installed at the front and rear ends of the left and right sides of the trolley body, and the bottom of the second fixed plate is slidably connected to the fixed rod through a sliding sleeve.

[0014] As a preferred solution of the utility model, a fixing hole adapted for use with a fixing rod is provided inside the mounting plate, the outer side of the fixing rod is meshed and connected with a driving gear through a tooth groove, the driving gear is rotatably connected to the adjusting box through a rotating shaft, and a crank is fixedly connected to one end of the rotating shaft located on the outside of the adjusting box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses that after the self-locking universal wheel is locked, the self-locking universal wheel on the same side of the trolley body is kept in a forward flush state through the design of the locking mechanism. Then, the rotating shaft is rotated by the crank handle, thereby driving the driving gear to rotate, and driving the two groups of fixed plug rods to move relative to each other under the connection of the tooth grooves, so that the fixed plug rods are inserted into the fixed plug holes inside the mounting plate. During the movement of the fixed plug rods, the sliding sleeve is used to ensure the movement stability. By fixing the mounting plate, the outer side of the self-locking universal wheel on the same side of the trolley body is fixed, thereby ensuring the stability of the self-locking universal wheel after being locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2for Figure 1 A magnified schematic diagram of the middle part;

[0019] Figure 3 This is a schematic diagram of the structure of the mounting seat of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the regulating box of the utility model.

[0021] In the figure: 1. trolley body; 101. push rod; 102. reinforcement rod; 2. mounting seat; 3. self-locking universal wheel; 301. mounting screw; 4. protection frame; 401. scraper; 402. inclined blade; 5. mounting plate; 501. fixing screw; 6. locking mechanism; 601. first fixing plate; 602. adjustment box; 603. driving gear; 604. fixing rod; 605. second fixing plate; 606. sliding sleeve; 607. tooth groove; 608. crank. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0025] A self-locking trolley wheel comprises a trolley body 1, four corners of the bottom of the trolley body 1 are fixedly mounted with mounting seats 2, the bottoms of the four groups of mounting seats 2 are rotatably connected with self-locking universal wheels 3, the outer sides of the four groups of self-locking universal wheels 3 are fixedly mounted with protective frames 4, the top of the protective frames 4 is fixedly connected with a mounting plate 5, and further comprises:

[0026] The locking mechanism 6 is fixedly mounted on the left and right sides of the trolley body 1 , and is used to fix the mounting plate 5 on the same side of the trolley body 1 .

[0027] First, two groups of push rods 101 are fixedly installed at the rear end of the top of the trolley body 1, and a reinforcing rod 102 is fixedly connected between the two groups of push rods 101. The trolley body 1 is pushed to move by the push rods 101, and the reinforcing rods 102 are used to strengthen the connection between the push rods 101.

[0028] Furthermore, the four corners at the top of the four sets of self-locking universal wheels 3 are threadedly connected with mounting screws 301, the four sets of mounting screws 301 are all fixedly connected to the mounting base 2, and the top ends of the four sets of mounting screws 301 are all threadedly connected to the bottom of the trolley body 1, and the mounting base 2 and the self-locking universal wheel 3 are connected and assembled by the four sets of mounting screws 301, and the self-locking universal wheel 3 is fixedly installed on the bottom of the trolley body 1.

[0029] Then, scrapers 401 are fixedly connected to the front and rear ends of the inner side of the protective frame 4, and the two sets of scrapers 401 are provided with inclined blade edges 402 at one end close to the self-locking universal wheel 3. When the self-locking universal wheel 3 is in use, the protective frame 4 is used to protect its outer side. At the same time, after debris is attached to the self-locking universal wheel 3, the scraper 401 and the inclined blade edges 402 on the scraper 401 can scrape off the debris, thereby preventing the debris from attaching to the outer side of the self-locking universal wheel 3 and affecting its movement.

[0030] Furthermore, the mounting plate 5 is fixedly connected to the top of the protection frame 4 , and the top of the mounting plate 5 is fixedly connected to the self-locking universal wheel 3 via a fixing screw 501 , and the protection frame 4 is mounted on the outside of the self-locking universal wheel 3 via the mounting plate 5 .

[0031] Secondly, in this embodiment, the specific structure of the locking mechanism 6 is as follows:

[0032] The locking mechanism 6 includes a first fixed plate 601, an adjusting box 602, a driving gear 603, a fixed rod 604, a second fixed plate 605 and a sliding sleeve 606. The first fixed plate 601 is fixedly installed in the middle of the left and right sides of the trolley body 1, the adjusting box 602 is fixedly installed in the middle of the bottom of the first fixed plate 601, the driving gear 603 is rotatably connected to the middle of the inside of the adjusting box 602, the fixed rod 604 is symmetrically installed on the upper and lower sides of the driving gear 603 and is slidably connected to the adjusting box 602, the second fixed plate 605 is fixedly installed at the front and rear ends of the left and right sides of the trolley body 1, and the bottom of the second fixed plate 605 is slidably connected to the fixed rod 604 through a sliding sleeve 606.

[0033] Finally, a fixing hole adapted for use with the fixing plug rod 604 is provided inside the mounting plate 5. The outer side of the fixing plug rod 604 is meshed and connected with the driving gear 603 through the tooth groove 607. The driving gear 603 is rotatably connected to the adjusting box 602 through a rotating shaft. One end of the rotating shaft located on the outer side of the adjusting box 602 is fixedly connected with a crank 608. After the self-locking universal wheel 3 is locked, the self-locking universal wheel 3 on the same side of the trolley body 1 is ensured to remain in a forward flush state. Subsequently, the rotating shaft is rotated by the crank 608, thereby driving the driving gear 603 to rotate. Under the connection of the tooth groove 607, the two groups of fixing plug rods 604 are driven to move relative to each other, so that the fixing plug rod 604 is inserted into the fixing hole inside the mounting plate 5. During the movement of the fixing plug rod 604, the sliding sleeve 606 is used to ensure its movement stability. By fixing the mounting plate 5, the outer side of the self-locking universal wheel 3 on the same side of the trolley body 1 is fixed, thereby ensuring the stability of the self-locking universal wheel 3 after locking.

[0034] In this embodiment, the implementation scenario is specifically as follows: the trolley body 1 is pushed to move by the hand push rod 101, the mounting seat 2 and the self-locking universal wheel 3 are connected and assembled by four sets of mounting screws 301, and the self-locking universal wheel 3 is fixedly installed on the bottom of the trolley body 1. After the self-locking universal wheel 3 is attached with debris, the scraper 401 and the inclined blade 402 on the scraper 401 can scrape the debris off, thereby preventing the debris from adhering to the outer side of the self-locking universal wheel 3 and affecting its movement. After the self-locking universal wheel 3 is locked, it is ensured that the self-locking universal wheel 3 on the same side of the trolley body 1 remains flush forward. State, and then the rotating shaft is rotated by the crank 608, thereby driving the driving gear 603 to rotate, and the two sets of fixed plug rods 604 are driven to move relative to each other under the connection of the tooth groove 607, so that the fixed plug rod 604 is inserted into the fixed plug hole inside the mounting plate 5, and the sliding sleeve 606 is used to ensure its movement stability during the movement of the fixed plug rod 604, and the mounting plate 5 is fixed to fix the outer side of the self-locking universal wheel 3 on the same side of the trolley body 1. The whole operation process is simple and convenient. Compared with the existing self-locking trolley wheels, the utility model can improve the overall stability of the self-locking trolley wheels through design.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking trolley wheel, comprising a trolley body (1), wherein mounting seats (2) are fixedly mounted at four corners of the bottom of the trolley body (1), the bottoms of four groups of the mounting seats (2) are rotatably connected with self-locking universal wheels (3), the outer sides of the four groups of the self-locking universal wheels (3) are fixedly mounted with protective frames (4), and the top of the protective frames (4) is fixedly connected with a mounting plate (5), characterized in that: Also includes: A locking mechanism (6) is fixedly mounted on the left and right sides of the trolley body (1), and the locking mechanism (6) is used to fix the mounting plate (5) on the same side of the trolley body (1).

2. A self-locking trolley wheel according to claim 1, characterized in that: Two groups of push rods (101) are fixedly installed at the rear end of the top of the trolley body (1), and a reinforcing rod (102) is fixedly connected between the two groups of push rods (101).

3. A self-locking trolley wheel according to claim 1, characterized in that: The four corners at the top of the four groups of self-locking universal wheels (3) are threadedly connected with mounting screws (301), the four groups of mounting screws (301) are all fixedly connected to the mounting seat (2), and the top ends of the four groups of mounting screws (301) are all threadedly connected to the bottom of the trolley body (1).

4. A self-locking trolley wheel according to claim 1, characterized in that: The front and rear ends of the inner side of the protection frame (4) are fixedly connected with scrapers (401), and the ends of the two groups of scrapers (401) close to the self-locking universal wheel (3) are both provided with inclined blade edges (402).

5. A self-locking trolley wheel according to claim 1, characterized in that: The mounting plate (5) is fixedly connected to the top of the protection frame (4), and the top of the mounting plate (5) is fixedly connected to the self-locking universal wheel (3) via a fixing screw (501).

6. A self-locking trolley wheel according to claim 1, characterized in that: The locking mechanism (6) comprises a first fixed plate (601), an adjusting box (602), a driving gear (603), a fixed plug rod (604), a second fixed plate (605) and a sliding sleeve (606); the first fixed plate (601) is fixedly installed at the middle of the left and right sides of the trolley body (1); the adjusting box (602) is fixedly installed at the middle of the bottom of the first fixed plate (601); the driving gear (603) is rotatably connected to the middle of the inside of the adjusting box (602); the fixed plug rod (604) is symmetrically installed at the upper and lower sides of the driving gear (603) and is slidably connected to the adjusting box (602); the second fixed plate (605) is fixedly installed at the front and rear ends of the left and right sides of the trolley body (1); the bottom of the second fixed plate (605) is slidably connected to the fixed plug rod (604) through the sliding sleeve (606).

7. A self-locking trolley wheel according to claim 6, characterized in that: The mounting plate (5) is provided with a fixing hole adapted for use with the fixing plug rod (604). The outer side of the fixing plug rod (604) is meshedly connected to the driving gear (603) via a tooth groove (607). The driving gear (603) is rotationally connected to the regulating box (602) via a rotating shaft. One end of the rotating shaft located outside the regulating box (602) is fixedly connected to a crank (608).

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