Aviation dining car with brake trundle structure

Abstract

The utility model discloses an aviation dining car with a brake caster structure, which is applied to the technical field of aviation dining car brake casters, and is characterized in that the aviation dining car comprises an aviation dining car and a mounting seat which is locked and fixedly connected to the aviation dining car; a wheel fork is rotationally connected to the mounting base in the horizontal direction, a locking disc and a wheel coaxially and fixedly connected to the locking disc are rotationally connected to the wheel fork, and a clamping block which is connected with the locking disc in a clamping mode so as to limit rotation of the locking disc is rotationally connected to the wheel fork; an unlocking assembly which drives the clamping block to rotate upwards or downwards so as to achieve unlocking or locking of the locking disc is connected to the wheel fork in a sliding mode in the vertical direction. The automatic braking device has the technical effects of simple structure and capability of realizing automatic braking.

Description

Technical Field

[0001] The utility model relates to the technical field of brake casters for airline dining vehicles, in particular to an airline dining vehicle with a brake caster structure. Background Art

[0002] With the improvement of economic level, people will choose to take a plane when traveling long distances, and in most cases they will choose to dine on the plane. When delivering meals, flight attendants will choose to use a meal delivery cart to deliver meals in sequence. In order to cope with the turbulence caused by airflow during the flight, the current brake devices of the meal delivery carts are mostly foot brake devices. When the plane encounters airflow turbulence during flight, people's stability is very poor, and it is inconvenient to use the foot brake, which can easily cause the meal cart to slide and accidentally injure passengers. Therefore, it is necessary to design a brake caster structure that can achieve automatic braking to solve this problem. Utility Model Content

[0003] The utility model aims to provide an aviation dining car with a brake caster structure, which has the advantages of simple structure and the ability to achieve automatic braking.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: an airline catering car with a brake caster structure, comprising an airline catering car and a mounting seat locked and fixedly connected to the airline catering car; a wheel fork is rotatably connected to the mounting seat in the horizontal direction, a locking disc and a wheel coaxially fixedly connected to the locking disc are rotatably connected to the wheel fork, a clamping block is rotatably connected to the locking disc to limit the rotation of the locking disc, and an unlocking component is slidably connected to the wheel fork in the vertical direction to drive the clamping block to rotate upward or downward to unlock or lock the locking disc; the locking disc is evenly provided with a plurality of clamping grooves along the circumferential direction, and the clamping block includes a plurality of clamping grooves. The cam is fixedly provided with a protrusion which is fixedly connected to the rotating part and is used to engage the engaging groove of the rotating part, and the end of the rotating part away from the pin is fixedly connected to the lifting and pressing part which cooperates with the unlocking assembly; the unlocking assembly includes a sliding hole provided on the wheel fork along the vertical direction and a sliding shaft slidably connected to the sliding hole, and the bottom of the sliding shaft is fixedly connected to a lifting and pressing block, and the lifting and pressing block is provided with a lifting and pressing groove which cooperates with the lifting and pressing part to drive the engaging block to rotate up and down, and a reset spring is sleeved on the sliding shaft to drive the lifting and pressing block to reset, and a rigid pulling rope provided along the vertical direction is fixedly connected to the sliding shaft.

[0005] The present invention is further configured as follows: the rigid pulling rope is connected to the handle of the airline catering cart, and the unlocking assembly is unlocked by pulling the rigid pulling rope upwards based on the handle; when the handle no longer pulls the rigid pulling rope, the return spring returns to its original position, thereby automatically driving the clamping block to rotate downwards, thereby locking the locking disk.

[0006] The utility model is further configured as follows: at least 8 clamping grooves are provided on the locking disk.

[0007] The utility model is further configured as follows: the rigid pulling rope is made of stainless steel.

[0008] The utility model is further configured as follows: a rotary bearing is fixedly connected between the mounting seat and the wheel fork.

[0009] In summary, the present invention has the following beneficial effects:

[0010] 1. The brake caster assembly is provided with a locking disc and a clamping block for clamping the locking disc on the wheel fork, and an unlocking assembly is connected to the wheel fork by sliding in the vertical direction to drive the clamping block to rotate upward or downward. The unlocking assembly is provided with a lifting block on the sliding shaft and a reset spring is sleeved on the sliding shaft, and a rigid lifting rope connected to the handle is fixed on the sliding shaft. The rigid lifting rope is pulled upward by the handle to drive the sliding shaft and the lifting block to slide upward. The lifting groove on the lifting block cooperates with the lifting part to drive the clamping block to rotate upward on the wheel fork so that the clamping part on the clamping block disengages from the clamping part. When the handle is no longer pulling the rigid pulling rope, the reset spring returns to drive the sliding shaft and the lifting block to reset downward, thereby pressing the clamping block to rotate downward, and the clamping portion on the clamping block enters the clamping groove to limit the rotation of the locking disk and the wheel, thereby automatically braking. In this way, automatic braking is achieved when the hand is released from the handle, and automatic unlocking is achieved when the handle is held. The operation is convenient, avoiding the need to control the foot brake to brake or unlock every time stopping or starting, and avoiding the possibility of forgetting to brake, thereby ensuring the safety of the airline catering cart. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0012] Figure 2 1 is a schematic structural diagram of the brake caster structure of this embodiment;

[0013] Figure 3 It is a structural cross-sectional view of the brake caster structure of this embodiment.

[0014] Figure numerals: 1. Airline catering cart; 2. Mounting seat; 3. Wheel fork; 4. Locking plate; 5. Wheel; 6. Clamping block; 61. Pin shaft; 62. Rotating part; 63. Clamping part; 64. Lifting and pressing part; 7. Unlocking assembly; 71. Sliding hole; 72. Sliding shaft; 73. Lifting and pressing block; 74. Lifting and pressing groove; 75. Return spring; 76. Rigid pulling rope; 8. Handle; 9. Clamping groove. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below with reference to the accompanying drawings.

[0016] Example:

[0017] refer to Figures 1 to 3 , an airline catering car with a brake caster structure, comprising an airline catering car 1 and a mounting base 2 which is locked and fixedly connected to the airline catering car 1, a rotating bearing being fixedly connected between the mounting base 2 and the wheel fork 3 to improve the smoothness of rotation of the wheel fork 3 on the mounting base 2, a wheel fork 3 being rotatably connected to the mounting base 2 in a horizontal direction, a locking plate 4 and a wheel 5 coaxially fixedly connected to the locking plate 4 being rotatably connected to the wheel fork 3, the wheel 5 can be directly fixed to the locking plate 4 based on a fixing pin or a locking screw, so as to move synchronously with the locking plate 4, a clamping block 6 which is rotatably connected to the locking plate 4 to limit the rotation of the locking plate 4, and an unlocking component 7 which drives the clamping block 6 to rotate upward or downward to unlock or lock the locking plate 4 is slidably connected to the wheel fork 3 in a vertical direction.

[0018] refer to Figures 2 to 3 Specifically, the locking disc 4 is uniformly provided with a plurality of engaging grooves 9 along its circumference. The engaging block 6 includes a rotating portion 62 rotatably connected to the fork 3 based on a pin 61, and an engaging portion 63 protruding and fixedly connected to the rotating portion 62 and adapted to engage with the engaging grooves 9. A lifting and pressing portion 64 cooperating with the unlocking assembly 7 is fixedly connected to the end of the rotating portion 62 away from the pin 61. When the rotating block rotates upward along the axle pin 61, the engaging portion 63 disengages from the engaging grooves 9, disengaging the locking disc 4 and allowing it to rotate freely with the wheel 5. When the rotating block rotates downward along the axle pin 61, the engaging portion 63 engages with the engaging grooves 9, preventing the locking disc 4 from further rotating, thereby achieving braking. In this embodiment, the locking disc 4 is provided with at least eight engaging grooves 9.

[0019] refer to Figures 2 to 3The cam 72 is engaged with the cam 73 and the cam 76 is engaged with the cam 74, and the cam 76 is engaged with the cam 74. The cam 76 is engaged with the cam 74 and the cam 76 is engaged with the cam 74. The cam 76 is engaged with the cam 74 and the cam 76 is engaged with the cam 74. The cam 76 is engaged with the cam 74 and the cam 76 is engaged with the cam 74. The sliding shaft 72 and the lifting block 73 slide upward, and the lifting groove 74 provided on the lifting block 73 cooperates with the lifting portion 64 to drive the clamping block 6 to rotate upward on the wheel fork 3, so that the clamping portion 63 on the clamping block 6 disengages the clamping groove 9, unlocking the locking disk 4 and allowing the wheel 5 to rotate freely. When the handle 8 no longer pulls the rigid lifting rope 76, the return spring 75 returns to its original position and drives the sliding shaft 72 and the lifting block 73 to move downward and reset, thereby pressing the clamping block 6 to rotate downward. The clamping portion 63 on the clamping block 6 enters the clamping groove 9, thereby restricting the rotation of the locking disk 4 and the wheel 5, thereby automatically braking. This achieves automatic braking when the hand is released from the handle 8, and automatic unlocking when the handle 8 is grasped, which is convenient for operation. In this embodiment, the rigid lifting rope 76 is made of stainless steel.

[0020] When the handle 8 no longer pulls the rigid pulling rope 76, the return spring 75 returns to drive the sliding shaft 72 and the lifting block 73 to move downward and reset, thereby pressing the clamping block 6 to rotate downward. The clamping portion 63 on the clamping block 6 enters the clamping groove 9, thereby limiting the rotation of the locking disk 4 and the wheel 5, thereby automatically braking. This realizes automatic braking when the hand is released from the handle 8.

[0021] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An airline catering vehicle with a brake caster structure, comprising an airline catering vehicle (1) and a mounting base (2) locked and fixedly connected to the airline catering vehicle (1); characterized in that: A wheel fork (3) is rotatably connected to the mounting seat (2) in the horizontal direction, a locking disc (4) and a wheel (5) coaxially fixedly connected to the locking disc (4) are rotatably connected to the wheel fork (3), a clamping block (6) is rotatably connected to the locking disc (4) to limit the rotation of the locking disc (4), and an unlocking component (7) is slidably connected to the wheel fork (3) in the vertical direction to drive the clamping block (6) to rotate upward or downward to unlock or lock the locking disc (4); The locking disc (4) is uniformly provided with a plurality of engaging grooves (9) along the circumferential direction. The engaging block (6) comprises a rotating portion (62) rotatably connected to the wheel fork (3) based on a pin shaft (61) and an engaging portion (63) protruding and fixedly connected to the rotating portion (62) and used for engaging with the engaging groove (9). An end of the rotating portion (62) away from the pin shaft (61) is fixedly connected to a lifting and pressing portion (64) cooperating with the unlocking assembly (7). The unlocking assembly (7) includes a sliding hole (71) provided on the wheel fork (3) along the vertical direction and a sliding shaft (72) slidably connected to the sliding hole (71); a lifting block (73) is fixedly connected to the bottom of the sliding shaft (72); a lifting groove (74) is provided on the lifting block (73) for cooperating with the lifting portion (64) to drive the clamping block (6) to rotate up and down; a reset spring (75) is sleeved on the sliding shaft (72) for driving the lifting block (73) to reset; and a rigid pulling rope (76) is fixedly connected to the sliding shaft (72) along the vertical direction.

2. The airline catering vehicle with a brake caster structure according to claim 1, characterized in that: The rigid pulling rope (76) is connected to the handle (8) of the airline catering cart (1), and the unlocking assembly (7) is unlocked by pulling the rigid pulling rope (76) upwards based on the handle (8). When the handle (8) no longer pulls the rigid pulling rope (76), the return spring (75) returns to its original position, thereby automatically driving the clamping block (6) to rotate downwards, thereby locking the locking disk (4).

3. The airline catering vehicle with a brake caster structure according to claim 1, characterized in that: At least eight of the clamping grooves (9) are provided on the locking disk (4).

4. The airline catering vehicle with a brake caster structure according to claim 1, characterized in that: The rigid pulling rope (76) is made of stainless steel.

5. The airline catering vehicle with a brake caster structure according to claim 1, characterized in that: A rotary bearing is fixedly connected between the mounting seat (2) and the wheel fork (3).

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