Table trolley

Abstract

A table trolley belongs to the technical field of commercial facilities. Comprising a left fence, a right fence and a storage layer fence, and the storage layer fence is located between the left fence and the right fence; the front folding mechanism is arranged below the position between the front side of the left fence and the front side of the right fence, the rear folding mechanism is arranged below the position between the rear side of the left fence and the rear side of the right fence, the structure of the rear folding mechanism is the same as that of the front folding mechanism, and the front folding mechanism comprises a first folding beam and a second folding beam. The position, corresponding to the position between the right end of the first folding beam and the rear side of the left end of the second folding beam, of the second folding beam is in pivot connection with the right end of the first folding beam and the left end of the second folding beam at the same time, the first folding beam and the second folding beam are the same in size, and the cross section is in a [shape. The right end of the first folding beam and the left end of the second folding beam are contained in the folding beam connecting sleeve. The utility model has the advantages that the bearing strength can be consistent, and the situations of deformation, collapse and the like caused by inconsistent bearing strength are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of commercial facility technology, and specifically relates to a logistics trolley. Background Technology

[0002] A logistics trolley is a tool used for storing, loading, unloading, handling, and displaying goods. Logistics trolleys offer advantages beyond those listed below: they can better utilize warehouse space, increasing warehouse utilization and thus expanding storage capacity; they facilitate the storage and turnover of goods, ensuring easier storage and making the stored goods readily visible, facilitating inventory checks and easy confirmation of stock levels; they improve logistics efficiency by easily moving goods from one location to another, thereby saving labor costs; and they help reduce workplace accidents, for example, by preventing injuries when handling heavy objects that pose a safety risk.

[0003] Technical information on logistics trolleys can be found in publicly available Chinese patent documents, such as CN103448767A recommending a "plastic base logistics trolley" and CN203063998U providing a "foldable logistics trolley," etc. A typical example is the "two-door logistics trolley" described in CN104442950B. This patent makes up for the shortcomings of the aforementioned two patents and objectively fulfills the technical effects described in paragraph 0018 of its specification. However, because its front and rear folding mechanisms each consist of a first folding guide rail and a second folding guide rail with a cross-sectional shape of 1 / 2, and the opposing ends of the first and second folding guide rails form a sliding pair and are hinged by a hinge pin, this structure, while capable of converting the usage state into a foldable storage state, also cannot convert it into a foldable storage state. However, since the opposing ends of the first and second folding guide rails form a mutually compatible sliding pair, the first and second folding guide rails need to use components of different specifications, i.e., one large and one small. This makes it impossible to achieve the same load-bearing strength between the first and second folding guide rails, and also affects the appearance. Utility Model Content

[0004] The objective of this invention is to provide a logistics trolley that ensures consistent support strength between the first and second folding beams for heavy objects, thereby preventing deformation or even collapse due to inconsistent load-bearing strength.

[0005] The present invention accomplishes its objective as follows: a logistics trolley includes a left column, a right column, and one or more storage shelves, with the left and right columns corresponding to each other. The storage shelves are located between the left and right columns, with the left side of each shelf hanging on the left column at the position corresponding to the left column, and the right side hanging on the right column at the position corresponding to the right column. It also includes a front folding mechanism and a rear folding mechanism. The front folding mechanism is located below the front sides of the left and right columns, while the rear folding mechanism is located below the rear sides of the left and right columns, and its structure is the same as the front folding mechanism. The mechanism includes a first folding beam and a second folding beam. The left end of the first folding beam is pivotally connected to the lower right side of the front of the left column, and the right end of the second folding beam is pivotally connected to the lower left side of the front of the right column. It is characterized by further including a folding beam connecting sleeve, which is pivotally connected to both the right end of the first folding beam and the left end of the second folding beam at a position corresponding to the rear side of the left end of the second folding beam. The first and second folding beams are the same size and both have a [-shaped cross-section. The right end of the first folding beam and the left end of the second folding beam are accommodated within the folding beam connecting sleeve.

[0006] In a specific embodiment of this utility model, a first folding beam hinge seat is fixed at the lower right end of the front of the left column, and the left end of the first folding beam is pivotally connected to the first folding beam hinge seat. A second folding beam hinge seat is fixed at the lower left end of the front of the right column, and the right end of the second folding beam is pivotally connected to the second folding beam hinge seat.

[0007] In another specific embodiment of this utility model, a first folding beam hinge seat pivot hole is provided on the first folding beam hinge seat, and a first folding beam hinge seat pivot is provided on the first folding beam hinge seat pivot hole. The left end of the first folding beam extends into the first folding beam hinge seat and a first folding beam left hinge shaft hole is provided. The left end of the first folding beam is hinged to the first folding beam hinge seat at positions corresponding to the first folding beam hinge seat pivot hole and the first folding beam left hinge shaft hole. A second folding beam hinge seat pivot hole is provided on the second folding beam hinge seat, and a second folding beam hinge seat pivot is provided on the second folding beam hinge seat pivot hole. The right end of the second folding beam extends into the second folding beam hinge seat and a second folding beam right hinge shaft hole is provided. The right end of the second folding beam is hinged to the second folding beam hinge seat at positions corresponding to the second folding beam hinge seat pivot hole and the second folding beam right hinge shaft hole.

[0008] In another specific embodiment of this utility model, a first right hinge shaft hole is provided at the right end of the first folding beam, and a second left hinge shaft hole is provided at the left end of the second folding beam. A first hinge shaft hole and a second hinge shaft hole are provided on the folding beam connecting sleeve. A first hinge shaft is provided on the first hinge shaft hole, and a second hinge shaft is provided on the second hinge shaft hole. The first hinge shaft hinges the right end of the first folding beam to the folding beam connecting sleeve at a position corresponding to the first hinge shaft hole and the right hinge shaft hole of the first folding beam. The second hinge shaft hinges the left end of the second folding beam to the folding beam connecting sleeve at a position corresponding to the second hinge shaft hole and the left hinge shaft hole of the second folding beam.

[0009] In another specific embodiment of this utility model, the cross-sectional shape of the folding beam connecting sleeve is [].

[0010] In another specific embodiment of this utility model, the left column, right column, and shelf column are hollowed-out grid structures.

[0011] In a further specific embodiment of this utility model, a set of left hooks for the shelf is arranged at intervals on the left side of the shelf, and a set of right hooks for the shelf is arranged at intervals on the right side of the shelf. The left hooks are hung on the left shelf, and the right hooks are hung on the right shelf.

[0012] In a further specific embodiment of this utility model, a left column walking wheel is provided at the bottom of the front and rear sides of the left column, and a right column walking wheel is provided at the bottom of the front and rear sides of the right column.

[0013] In another specific embodiment of this utility model, a folding mechanism limiting foot is fixed on the lower front and rear sides of the shelf and at corresponding positions. The folding mechanism limiting foot located on the lower front side of the shelf cooperates with the front folding mechanism, while the folding mechanism limiting foot located on the lower rear side of the shelf cooperates with the rear folding mechanism.

[0014] The technical effect of the technical solution provided by this utility model is that, since the first and second folding beams of the first folding mechanism are designed to be the same size and are connected by the added folding beam connecting sleeve, the support strength can be made consistent, avoiding deformation, collapse and other situations caused by inconsistent load-bearing strength. Attached Figure Description

[0015] Figure 1 This is a structural diagram of an embodiment of the present utility model. Detailed Implementation

[0016] In order to better understand the technical essence and beneficial effects of this utility model, the applicant provides a detailed description below by way of embodiments. However, the description of the embodiments is not intended to limit the solution of this utility model. Any formal but not substantive equivalent transformations made based on the concept of this utility model should be considered within the scope of the technical solution of this utility model.

[0017] In the following description, all directional or orientational concepts involving up, down, left, right, front, and back are based on Figure 1 The current position is used as an example and therefore should not be construed as a special limitation on the technical solution provided by this utility model.

[0018] Please see Figure 1 The diagram shows a left column 1, a right column 2, and one or more shelf shelves 3. The left column 1 and right column 2 correspond to each other, i.e., they are left and right to each other. The shelf shelves 3 are located between the left column 1 and the right column 2, and the left side of the shelf shelf 3 is hung on the left column 1 at the position corresponding to the left column 1, while the right side of the shelf shelf 3 is hung on the right column 2 at the position corresponding to the right column 2. The diagram also shows a front folding mechanism 4 and a rear folding mechanism 5. The front folding mechanism 4 is located below the front side between the left column 1 and the right column 2, while the rear folding mechanism 5 is located below the rear side between the left column 1 and the right column 2, and the structure of the rear folding mechanism 5 is the same as that of the front folding mechanism 4. The aforementioned front folding mechanism 4 includes a first folding beam 41 and a second folding beam 42. The left end of the first folding beam 41 is pivotally connected to the lower right front part of the aforementioned left column 1, and the right end of the second folding beam 42 is pivotally connected to the lower left front part of the aforementioned right column 2.

[0019] The key technical point of the technical solution provided by this utility model is as follows: In the aforementioned structural system of the front folding mechanism 4 of the logistics trolley, a folding beam connecting sleeve 43 is also included. The folding beam connecting sleeve 43 is pivotally connected to the right end of the first folding beam 41 and the left end of the second folding beam 42 at a position corresponding to the right end of the first folding beam 41 and the left end of the second folding beam 42. The first folding beam 41 and the second folding beam 42 are the same size and have a cross-sectional shape of []. The right end of the first folding beam 41 and the left end of the second folding beam 42 are accommodated in the folding beam connecting sleeve 43.

[0020] Depend on Figure 1As shown, the first folding beam 41 and the second folding beam 42 are each made of U-shaped steel of the same specifications. Furthermore, although the applicant has shown only one storage shelf 3 in the figure, in actual use there can be two, three, or more, depending on the type of items being handled. However, when using only one storage shelf 3, it is preferable to place its front and rear sides on the front folding mechanism 4 and the rear folding mechanism 5 respectively, while the left and right sides are hung on the left shelf 1 and the right shelf 2 respectively. Using only one storage shelf 3 can meet the requirements for transporting relatively heavy items.

[0021] A first folding beam hinge seat 11 is fixed at the lower right end of the front of the aforementioned left column 1. The left end of the aforementioned first folding beam 41 is pivotally connected to the first folding beam hinge seat 11. A second folding beam hinge seat 21 is fixed at the lower left end of the front of the aforementioned right column 2. The right end of the aforementioned second folding beam 42 is pivotally connected to the second folding beam hinge seat 21.

[0022] A first folding beam hinge seat pivot hole 111 is provided on the aforementioned first folding beam hinge seat 11. A first folding beam hinge seat pivot 1111 is provided on the first folding beam hinge seat pivot hole 111. The left end of the aforementioned first folding beam 41 extends into the first folding beam hinge seat 11 and a first folding beam left hinge shaft hole 411 is provided. The first folding beam hinge seat pivot 1111 hinges the left end of the first folding beam 41 to the first folding beam hinge seat 11 at positions corresponding to the first folding beam hinge seat pivot hole 111 and the first folding beam left hinge shaft hole 411. A second folding beam hinge seat pivot hole 211 is provided on the aforementioned second folding beam hinge seat 21. A second folding beam hinge seat pivot 2111 is provided on the second folding beam hinge seat pivot hole 211. The right end of the aforementioned second folding beam 42 extends into the second folding beam hinge seat 21 and a second folding beam right hinge shaft hole 421 is provided. The right end of the second folding beam 42 is hinged to the second folding beam hinge seat 21 by the aforementioned second folding beam hinge seat pivot 2111 at the positions corresponding to the second folding beam hinge seat pivot hole 211 and the second folding beam right hinge shaft hole 421.

[0023] A right hinge shaft hole 412 is provided at the right end of the aforementioned first folding beam 41, and a left hinge shaft hole 422 is provided at the left end of the aforementioned second folding beam 42. A first hinge shaft hole 431 and a second hinge shaft hole 432 are provided on the aforementioned folding beam connecting sleeve 43. A first hinge shaft 4311 is provided on the first hinge shaft hole 431, and a second hinge shaft 4321 is provided on the second hinge shaft hole 432. The first hinge shaft 4311 hinges the right end of the first folding beam 41 to the folding beam connecting sleeve 43 at a position corresponding to the first hinge shaft hole 431 and the right hinge shaft hole 412 of the first folding beam. The second hinge shaft 4321 hinges the left end of the second folding beam 42 to the folding beam connecting sleeve 43 at a position corresponding to the second hinge shaft hole 432 and the left hinge shaft hole 422 of the second folding beam.

[0024] The cross-sectional shape of the aforementioned folding beam connecting sleeve 43 is U-shaped, meaning that the folding beam connecting sleeve 43 is made of U-shaped steel with a specification one size larger than that of the first folding beam 41 and the second folding beam 42.

[0025] The aforementioned left column 1, right column 2, and shelf column 3 are perforated grid structures. Specifically, the left column 1 is formed by welding the spaced left column longitudinal grid ribs 13 and spaced left column horizontal grid ribs 14 together in a crisscross pattern within a U-shaped frame. Similarly, the right column 2 is formed by welding the spaced right column longitudinal grid ribs 23 and spaced right column horizontal grid ribs 24 together in a crisscross pattern within a U-shaped frame.

[0026] On the left side of the aforementioned shelf 3, there is a set of left shelf hooks 31 arranged at intervals, and on the right side of the shelf 3, there are right shelf hooks 32 arranged at intervals. The left shelf hooks 31 are hung on the left shelf 1, and the right shelf hooks 32 are hung on the right shelf 2.

[0027] A left column wheel 12 equipped with a brake is provided at the bottom of the front and rear sides of the aforementioned left column 1, and a right column wheel 22 equipped with a brake is provided at the bottom of the front and rear sides of the aforementioned right column 2. Both the left column wheel 12 and the right column wheel 22 are preferably omnidirectional wheels.

[0028] Preferably, a folding mechanism limiting foot 33 is fixed at corresponding positions on the lower front and rear sides of the shelf 3. The folding mechanism limiting foot 33 located on the lower front side of the shelf 3 cooperates with the front folding mechanism 4, while the folding mechanism limiting foot 33 located on the lower rear side of the shelf 3 cooperates with the rear folding mechanism 5. Specifically, the folding mechanism limiting foot 33 contacts the rear side, i.e., the inward-facing side, of the aforementioned folding beam connecting sleeve 43, thereby preventing abnormal folding of the first folding beam 41 and the second folding beam 42. The same applies to the folding mechanism limiting foot 33 located on the lower rear side of the shelf 3. Thus, it can be seen that when Figure 1 When the illustrated shelf 3 is in a horizontal position, i.e., in a position capable of supporting goods, the folding mechanism limiting feet 33 can limit the front folding mechanism 4 and the rear folding mechanism 5, preventing abnormal folding. Furthermore, based on common sense, when multiple shelf units 3 exist, except for the bottom shelf unit (i.e., the one shown in the illustration) which has folding mechanism limiting feet 33, the other shelf units 3 do not need, and therefore do not require, folding mechanism limiting feet 33.

[0029] When to make Figure 1 When the unfolded state is changed to the folded storage state, that is, when the present invention is to be changed from the use state to the storage (standby) state that helps to reduce space occupation, firstly, the shelf 3 is flipped to a more vertical state that is close to the left shelf 1 or the right shelf 2. The limiting foot 33 of the folding mechanism on the bottom shelf 3 releases the restriction on the front and rear folding mechanisms 4 and 5. The operator applies a force to the front folding mechanism 4 towards the rear folding mechanism 5 (such as by gently kicking it with his foot), so that the first folding beam 41 and the second folding beam 42 of the front folding mechanism 4 are respectively rotated around the first hinge shaft 4311 and the second hinge shaft 4321 of the connecting sleeve. This causes the opposite ends of the first folding beam 41 and the second folding beam 42, i.e. the right end of the first folding beam 41 and the left end of the second folding beam 42, to be closed together in the continuous state of the folding beam connecting sleeve 43. In this state, the aforementioned left shelf 1 and right shelf 2 are also closed together. When it is to be used, the operation is reversed as described above.

[0030] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A logistics trolley, comprising a left column (1), a right column (2), and one or more storage shelves (3), wherein the left column (1) and the right column (2) correspond to each other, the storage shelves (3) are located between the left column (1) and the right column (2), and the left side of the storage shelf (3) is hung on the left column (1) at the position corresponding to the left column (1), while the right side of the storage shelf (3) is hung on the right column (2) at the position corresponding to the right column (2); a front folding mechanism (4) and a rear folding mechanism (5), wherein the front folding mechanism (4) is disposed on the left column. (1) and the front side of the right column (2) are located below, and the rear folding mechanism (5) is located below the rear side of the left column (1) and the right column (2) and the structure of the rear folding mechanism (5) is the same as that of the front folding mechanism (4). The front folding mechanism (4) includes a first folding beam (41) and a second folding beam (42). The left end of the first folding beam (41) is pivotally connected to the lower right front part of the left column (1), and the right end of the second folding beam (42) is pivotally connected to the lower left front part of the right column (2). The characteristic is that: It also includes a folding beam connecting sleeve (43), which is pivotally connected to the right end of the first folding beam (41) and the left end of the second folding beam (42) at a position corresponding to the right end of the first folding beam (41) and the left end of the second folding beam (42). The first folding beam (41) and the second folding beam (42) are the same size and have a cross-sectional shape of []. The right end of the first folding beam (41) and the left end of the second folding beam (42) are accommodated in the folding beam connecting sleeve (43).

2. The logistics trolley according to claim 1, characterized in that: A first folding beam hinge seat (11) is fixed at the lower right front end of the left column (1). The left end of the first folding beam (41) is pivotally connected to the first folding beam hinge seat (11). A second folding beam hinge seat (21) is fixed at the lower left front end of the right column (2). The right end of the second folding beam (42) is pivotally connected to the second folding beam hinge seat (21).

3. A logistics trolley according to claim 2, characterized in that: A first folding beam hinge seat pivot hole (111) is provided on the first folding beam hinge seat (11). A first folding beam hinge seat pivot (1111) is provided on the first folding beam hinge seat pivot hole (111). The left end of the first folding beam (41) extends into the first folding beam hinge seat (11) and a first folding beam left hinge shaft hole (411) is provided. The first folding beam hinge seat pivot (1111) hinges the left end of the first folding beam (41) to the first folding beam hinge seat (11) at positions corresponding to the first folding beam hinge seat pivot hole (111) and the first folding beam left hinge shaft hole (411). A second folding beam hinge seat pivot hole (211) is provided on the second folding beam hinge seat (21), and a second folding beam hinge seat pivot (2111) is provided on the second folding beam hinge seat pivot hole (211). The right end of the second folding beam (42) extends into the second folding beam hinge seat (21) and a second folding beam right hinge shaft hole (421) is provided. The second folding beam hinge seat pivot (2111) hinges the right end of the second folding beam (42) to the second folding beam hinge seat (21) at the positions corresponding to the second folding beam hinge seat pivot hole (211) and the second folding beam right hinge shaft hole (421).

4. A logistics trolley according to claim 1, 2, or 3, characterized in that: A right hinge shaft hole (412) is provided at the right end of the first folding beam (41), and a left hinge shaft hole (422) is provided at the left end of the second folding beam (42). A first hinge shaft hole (431) and a second hinge shaft hole (432) are provided on the folding beam connecting sleeve (43). A first hinge shaft (4311) is provided on the first hinge shaft hole (431), and a connecting sleeve is provided on the second hinge shaft hole (432). The second hinge shaft (4321) hinges the right end of the first folding beam (41) to the folding beam connecting sleeve (43) at a position corresponding to the first hinge shaft hole (431) of the connecting sleeve and the right hinge shaft hole (412) of the first folding beam, and the second hinge shaft (4321) hinges the left end of the second folding beam (42) to the folding beam connecting sleeve (43) at a position corresponding to the second hinge shaft hole (432) of the connecting sleeve and the left hinge shaft hole (422) of the second folding beam.

5. A logistics trolley according to claim 4, characterized in that: The cross-sectional shape of the folding beam connecting sleeve (43) is [].

6. A logistics trolley according to claim 1, characterized in that: The left column (1), right column (2) and shelf column (3) are hollowed-out grid structures.

7. A logistics trolley according to claim 1 or 6, characterized in that: A set of left hooks (31) are arranged at intervals on the left side of the shelf (3), and a set of right hooks (32) are arranged at intervals on the right side of the shelf (3). The left hooks (31) are hung on the left shelf (1), and the right hooks (32) are hung on the right shelf (2).

8. A logistics trolley according to claim 1 or 6, characterized in that: A left column wheel (12) is provided at the bottom of the front and rear sides of the left column (1), and a right column wheel (22) is provided at the bottom of the front and rear sides of the right column (2).

9. A logistics trolley according to claim 1, characterized in that: A folding mechanism limiting foot (33) is fixed on the front and rear sides of the shelf (3) at corresponding positions. The folding mechanism limiting foot (33) located on the front side of the shelf (3) cooperates with the front folding mechanism (4), while the folding mechanism limiting foot (33) located on the rear side of the shelf (3) cooperates with the rear folding mechanism (5).

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