Transfer trolley for circuit breaker

Abstract

A transfer trolley for a circuit breaker comprises a frame and a bracket, the bracket is arranged on the frame and can ascend and descend, a first stand column and a second stand column which are symmetrically distributed left and right are arranged on the two short shaft sides of the frame, the first stand column is provided with a first assembly base face, and a first wheel carrier which can swing and is provided with universal wheels is arranged on the first assembly base face. The first stand column is provided with a first assembling base face, the second stand column is provided with a second assembling base face, the second assembling base face is provided with a second wheel carrier which can swing and is provided with universal wheels, the first wheel carrier is provided with a locked piece, the second wheel carrier is provided with a locking piece combined with the locked piece, and after combination, the first stand column and the second stand column are allowed to be separated from the ground, and the universal wheels make contact with the ground. The beneficial effects of the utility model lie in that the transfer trolley has two use states of stopping and moving, that is, the transfer trolley can be kept in a stable state when a circuit breaker is loaded or unloaded, which is beneficial for operators to carry the circuit breaker; and the transfer trolley is kept in a movable state in the transfer process.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker transport equipment, in particular to a transport vehicle for circuit breakers. Background Art

[0002] With the development of technology, the use of circuit breakers in high-voltage and low-voltage power grids has become very popular. In order to ensure the functions and safety performance of circuit breakers, the existing circuit breakers are of large weight and size, and a trolley is often required for transportation during installation.

[0003] Publication No. CN219044340U discloses a circuit breaker transport vehicle, comprising a base plate, a pair of rollers are symmetrically installed at the lower end of the base plate, a fixed base is welded at the upper end of the base plate, a pair of concave supporting plates are symmetrically welded at the upper end of the fixed base, a pair of concave limiting frames are symmetrically welded at the upper end of the fixed base, a pair of driving screws are symmetrically arranged at the upper end of the fixed base, a first crank is symmetrically welded at both ends of the driving screw, a lifting mechanism is symmetrically installed on the driving screw, the lower end of the lifting mechanism is welded to the upper end of the fixed base, the upper end of the lifting mechanism is connected with a lifting plate through a hinge, a convex groove is symmetrically opened at the upper end of the lifting plate, a sliding groove is opened at the upper end of the lifting plate, a pair of guide plates are symmetrically welded at the lower end of the lifting plate, a left and right fine-tuning mechanism is installed on the lifting plate, a supporting platform is installed at the upper end of the lifting plate, a baffle is welded at the upper end of the supporting platform, a transmission block is welded at the lower end of the supporting platform, and a pair of convex sliding blocks are symmetrically welded at the lower end of the supporting platform. This circuit breaker transfer vehicle is used to transport circuit breakers, but has a defect, that is, the rollers arranged on the bottom plate are always in contact with the ground, so the transfer vehicle cannot remain fixed when loading or unloading the circuit breaker, and if the rollers are universal wheels with locks, when stopping the transfer vehicle from moving, it is also necessary to step on the locks on the universal wheels one by one, and when releasing the locks, it is also necessary to unlock them one by one, which is too cumbersome. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings of the prior art and provides a circuit breaker transfer vehicle to solve the above-mentioned problems.

[0005] The utility model adopts a technical solution to solve the technical problem: the circuit breaker transport vehicle comprises a frame and a bracket, the bracket is arranged on the frame and can be lifted and lowered, the two short-axis sides of the frame are both provided with a first column and a second column which are symmetrically distributed on the left and right, the first column has a first assembly base surface, the first assembly base surface is provided with a first swingable wheel frame with a universal wheel, the second column has a second assembly base surface, the second assembly base surface is provided with a second swingable wheel frame with a universal wheel, the first wheel frame is provided with a locked piece, the second wheel frame is provided with a locking piece combined with the locked piece, and the first column and the second column are allowed to be separated from the ground and the universal wheel is allowed to contact the ground after the combination.

[0006] Further improvement, the first wheel frame includes a first mounting rod, the first mounting rod is connected to the first column through a hinge structure, and has a third assembly base surface and a locking contact surface. The third assembly base surface is used to set the locked part, and the locking contact surface contacts the second wheel frame after the locking part and the locked part are combined.

[0007] For further improvement, the second wheel frame includes a second mounting rod, which is connected to the second column through a hinge structure and has a fourth assembly base surface and a locking mating surface. The fourth assembly base surface is used to set a locking element. The locking mating surface contacts the locking contact surface after the locking element and the locked element are combined. An extension rod extending downward is provided, and the extension rod is used to set a universal wheel.

[0008] For further improvement, the locked part is arranged as a column with a length, and the locking part is arranged as a sheet with a thickness, which is axially connected to the shaft part arranged on the fourth assembly base surface, and the lower end has an extension sheet extending toward the locked part, and a step-shaped snap-fit ​​structure is obtained through the extension sheet, and the snap-fit ​​structure is snap-fitted with the locked part.

[0009] For further improvement, an inclined surface is provided at one end of the extension piece facing away from the locking element.

[0010] For further improvement, a first pulling column is arranged on one side of the shaft member on the fourth assembly base surface, a second pulling column is arranged on the locking member, and a tension spring is arranged between the first pulling column and the second pulling column.

[0011] For further improvement, the upper end of the lock element has a bent piece obtained by bending, and a first synchronization rod is arranged between the two bent pieces.

[0012] For further improvement, a second synchronization rod is provided between the two first installation rods and between the two second installation rods.

[0013] The beneficial effects of the utility model are:

[0014] The utility model enables the transfer vehicle to have two use states, namely, a stopped state and a moving state. That is, the transfer vehicle can maintain a stable and immobile state when loading or unloading the circuit breaker, which is convenient for operators to carry the circuit breaker. During the transfer process, the transfer vehicle remains in a movable state and is easy to operate, and the operation can be performed by simply stepping on the second wheel frame (moving state) or lifting the first wheel frame (stopped state). BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the front side of the utility model;

[0017] Figure 3 For this utility model Figure 2A partial enlarged schematic diagram of part A. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Referring to the accompanying drawings: This circuit breaker transport vehicle includes a frame 1 and a bracket 2, the bracket 2 is arranged on the frame 1 and can be raised and lowered, the two short-axis sides of the frame 1 are provided with a first column 3 and a second column 4 that are symmetrically distributed on the left and right, the first column 3 has a first assembly base 31, the first assembly base 31 is provided with a swingable first wheel frame 5 with a universal wheel, the second column 4 has a second assembly base 41, the second assembly base 41 is provided with a swingable second wheel frame 6 with a universal wheel, the first wheel frame 5 is provided with a locked piece 7, the second wheel frame 6 is provided with a locking piece 8 combined with the locked piece 7, and the first column 3 and the second column 4 are allowed to be separated from the ground and the universal wheel is in contact with the ground after the combination. The principle of the utility model is that the frame 1 has two use states, namely, a stop state and a moving state, through the swing setting of the first wheel frame 5 and the second wheel frame 6. When in the stop state, the inclination angle between the first wheel frame 5, the second wheel frame 6 and the first column 3 and the second column 4 is less than 90°, so that the universal wheel cannot contact the ground, and the first column 3 and the second column 4 are in contact with the ground; when in the moving state, the inclination angle between the first wheel frame 5, the second wheel frame 6 and the first column 3 and the second column 4 is equal to 90°, and the locking member 8 and the locked member 7 remain in a locked state, that is, the second wheel frame 6 and the first column 3 and the second column 4 are in a locked state. The inclination angle between the two is maintained at 90°, so that the universal wheel contacts the ground, and the first column 3 and the second column 4 cannot contact the ground; by switching between these two use states, the frame 1 can maintain a stable and immobile state when the circuit breaker is placed on the bracket 2 or removed from the bracket 2, which is beneficial for operators to carry the circuit breaker and avoids the danger caused by the frame 1 being unable to maintain a stable and immobile state during the loading and unloading process. The frame 1 can maintain a moving state during the transportation process, and the operation is also convenient, and it only needs to step on the second wheel frame 6 (moving state) or lift the first wheel frame 6 (stop state) by foot.

[0020] The first wheel frame 5 includes a first mounting rod 51, which is connected to the first column 3 through a hinge structure, and has a third assembly base surface 51-a and a locking contact surface 51-b. The third assembly base surface 51-a is used to set the locked part 7, and the locking contact surface 51-b contacts the second wheel frame 6 after the locking part 8 and the locked part 7 are combined. The first mounting rod 51 not only has a usable length, but also has a flat surface. The flat surface not only facilitates the setting of the locked part 7 and the hinge structure, but also does not have a contact gap when contacting with the second wheel frame 5, so that the contact area is large. The third assembly base surface 51-a is located at the front end of the first mounting rod 51 and is used to set the locked part 7, which makes it convenient for the operator to observe the combination of the locked part 7 and the locking part 8. The locking contact surface 51-b is located at the upper end of the first mounting rod 51 and is used to set the hinge structure, and is in close contact with the second wheel frame 6 when the locked part 7 and the locking part 8 are combined.

[0021] The second wheel frame 6 includes a second mounting rod 61, which is connected to the second column 4 through a hinge structure and has a fourth assembly base 61-a and a locking mating surface 61-b. The fourth assembly base 61-a is used to set the locking element 8. The locking mating surface 61-c contacts the locking contact surface 51-b after the locking element 8 and the locked element 7 are combined. A downwardly extending extension rod 61-b1 is provided on the fifth assembly base 61-b. The extension rod 61-b1 is used to set the universal wheel. The configuration and function of the second mounting rod 61 are consistent with those of the first mounting rod 51. The only difference between the two is that the length of the second mounting rod 61 is longer than that of the first mounting rod 51. length, the fourth assembly base surface 61-a is located at the front end of the second mounting rod 61 and is used to set the locking member 8, which makes it convenient for the operator to observe the combination of the locked member 7 and the locking member 8, the hinge structure is arranged on the upper end surface of the second mounting rod 61, the locking mating surface 61-b is located at the lower end of the second mounting rod 61 and is used to set the extension rod 61-b1, and the combination of the locked member 7 and the locking member 8 is in contact with the locking contact surface 51-b, the extension rod 61-b1 is used to set the universal wheel, and the horizontal position of the universal wheel of the second wheel frame 6 can be consistent with the horizontal position of the universal wheel of the first wheel frame 5, so that there will be no unevenness when the universal wheel contacts the ground.

[0022] The locked member 7 is arranged as a column with a length, and the locking member 8 is arranged as a sheet with a thickness, which is axially connected to the shaft member 9 arranged on the fourth assembly base surface 61-a, and the lower end has an extension sheet 81 extending toward the locked member 7, and a step-shaped snap-in structure 10 is obtained through the extension sheet 81, and the snap-in structure 10 is snap-fitted with the locked member 7. Such an arrangement enables the locked member 7 and the locking member 8 to be matched in a snap-fit ​​manner, that is, the combination of the snap-in structure 10 and the locked member 7 is utilized, and the locked member 7 also exists as a preventing component on the rotation path of the locking member 8, that is, the rotation amplitude of the locking member 8 is limited to prevent the locked member 7 and the locking member 8 from separating after the combination, so that the inclination angle between the second wheel frame 6 and the first column 3 and the second column 4 is maintained at 90°, and the universal wheel is kept in contact with the ground at all times.

[0023] An inclined surface 81-a is provided at one end of the extension piece 81 away from the locking piece 8, and the inclined surface 81-a plays a guiding role, that is, when the second wheel frame 6 is controlled to swing downward, the locking piece 8 will also follow the downward swing, and because the first wheel frame 5 is located below the second wheel frame 6, it also drives the first wheel frame 5 to swing downward at the same time. When following the downward swing, the locking piece 8 first contacts the locked piece 7 through the inclined surface 81-a, and generates a squeezing force when contacting. The locking piece 8 is also rotated through the inclined trajectory of the inclined surface 81-a, so that the clamping structure 10 is shifted to the bottom of the locked piece 7 and combined with the locked piece 7.

[0024] A first pulling column 20 is provided on one side of the shaft 9 of the fourth assembly base surface 61-a, and a second pulling column 30 is provided on the locking member 8, and a tension spring 40 is provided between the first pulling column 20 and the second pulling column 30. Such a configuration enables the locking member 8 to have a self-locking effect, that is, the tension spring 40 can be compressed and deformed when the locking member 8 is squeezed by the locked member 7, and the tension spring 40 is reset after the locking member 8 is separated from the extension piece 81, so that the locking member 8 can be reset after rotation, so that the locking member 8 can be combined with the locked member 7 by itself, that is, the clamping structure is clamped and cooperated with the locked member 7, and the operator only needs to apply the downward pressure generated by stepping on the second wheel frame 6.

[0025] The upper end of the lock 8 has a bent piece 82 obtained by bending, and a first synchronization rod 50 is arranged between the two bent pieces 82. Such an arrangement enables the two locks 8 to swing synchronously, which can avoid operating the two locks 8 one by one and improve the use efficiency.

[0026] A second synchronization rod 60 is arranged between the two first mounting rods 51 and between the two second mounting rods 61. Such an arrangement enables the two first wheel frames 5 and the two second wheel frames 6 to swing synchronously. This method can avoid operating the two first wheel frames 5 or the two second wheel frames 6 one by one, thereby improving the use efficiency.

[0027] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A circuit breaker transport vehicle, comprising a vehicle frame (1) and a bracket (2), wherein the bracket (2) is arranged on the vehicle frame (1) and can be raised and lowered, and characterized in that: The two short-axis sides of the frame (1) are both provided with a first column (3) and a second column (4) symmetrically distributed on the left and right sides; the first column (3) has a first assembly base surface (31); a first wheel frame (5) which is swingable and has a universal wheel is provided on the first assembly base surface (31); the second column (4) has a second assembly base surface (41); a second wheel frame (6) which is swingable and has a universal wheel is provided on the second assembly base surface (41); a locked part (7) is provided on the first wheel frame (5); a locking part (8) which is combined with the locked part (7) is provided on the second wheel frame (6); and after the combination, the first column (3) and the second column (4) are allowed to be separated from the ground and the universal wheel is allowed to contact the ground.

2. The circuit breaker transport vehicle according to claim 1, characterized in that: The first wheel frame (5) comprises a first mounting rod (51), the first mounting rod (51) being connected to the first column (3) via a hinge structure, and having a third assembly base surface (51-a), and a locking contact surface (51-b), the third assembly base surface (51-a) being used to set the locked part (7), and the locking contact surface (51-b) being in contact with the second wheel frame (6) after the locking part (8) and the locked part (7) are combined.

3. The circuit breaker transport vehicle according to claim 2, characterized in that: The second wheel frame (6) comprises a second mounting rod (61), the second mounting rod (61) being connected to the second column (4) via a hinge structure, and having a fourth assembly base surface (61-a) and a locking mating surface (61-b), the fourth assembly base surface (61-a) being used to set the locking element (8), the locking mating surface (61-b) being in contact with the locking contact surface (51-b) after the locking element (8) and the locked element (7) are combined, and an extension rod (61-b1) extending downward is provided, the extension rod (61-b1) being used to set the universal wheel.

4. The circuit breaker transport vehicle according to claim 1, characterized in that: The locked member (7) is configured as a column having a length, and the locking member (8) is configured as a sheet having a thickness, which is axially connected to a shaft member (9) arranged on the fourth assembly base surface (61-a), and has an extension sheet (81) extending toward the locked member (7) at its lower end, and a step-shaped clamping structure (10) is obtained through the extension sheet (81), and the clamping structure (10) is clamped and matched with the locked member (7).

5. The circuit breaker transport vehicle according to claim 4, characterized in that: An inclined surface (81-a) is provided at one end of the extension piece (81) facing away from the locking element (8).

6. The circuit breaker transport vehicle according to claim 4, characterized in that: The fourth assembly base surface (61-a) is provided with a first pulling column (20) on one side of the shaft (9), the locking member (8) is provided with a second pulling column (30), and a tension spring (40) is provided between the first pulling column (20) and the second pulling column (30).

7. The circuit breaker transport vehicle according to claim 4, characterized in that: The upper end of the locking element (8) has a bent piece (82) obtained by bending, and a first synchronization rod (50) is arranged between the two bent pieces (82).

8. The circuit breaker transport vehicle according to claim 3, characterized in that: A second synchronization rod (60) is provided between the two first installation rods (51) and between the two second installation rods (61).

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