CN205220741U - Folding trolley - Google Patents

Abstract

The utility model discloses a folding trolley, which comprises a handle, an upper hook lock, an overturn frame, a support rod, a lower hook lock, universal wheels, a telescopic vehicle frame, a front wheel, a front wheel support and a handle support rod. The foldable trolley is suitable for various complex terrains, easy to operate, labor-saving, small in size, foldable, detachable, and flexible. It is not only a portable transport device operated by a single person, but also an ideal working platform in the field. It has many functions and a wide range of uses. , to meet the needs of engineering operations. It is necessary and practical to improve operating efficiency, reduce personnel workload, improve equipment operation methods, and buy time for our army's emergency operations and rescue and disaster relief.

Description

A folding trolley

technical field

The utility model belongs to the technical field of engineering operation equipment, in particular to a folding trolley. It is widely used in fortification maintenance, equipment maintenance, medical assistance, material transportation, logistics support, and as a workbench.

Background technique

Engineering operation equipment is widely used in our country, such as material transportation in the emergency repair of military fortifications and civil fortifications, spare parts supply in equipment maintenance and medical assistance, and material and material transportation in logistics support. However, these engineering operations often have complex terrain, many types of parts, and a single object is heavy. Large transport vehicles cannot be authentic to the site and destination, and can only rely on human transportation. The quantity and speed of human transportation are very limited, and the labor intensity is high. The time spent on connection and transportation construction is relatively long, which affects the smooth implementation of logistics support and the mobility of troops to a certain extent, and also affects the efficiency of emergency repairs. At the same time, due to the limitation of field conditions, for activities such as maintenance, experimental measurement, and medical treatment, work surfaces are also required to arrange equipment, operation maintenance, experimental measurement, medical assistance, etc.

Utility model content

The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned prior art, and provide a foldable trolley, which is suitable for various complex terrains, easy to operate, labor-saving, small in size, foldable, detachable, and flexible , is not only a portable transport equipment operated by one person, but also an ideal working platform in the field. It has many functions and wide uses, and can meet the needs of engineering operations. It is necessary and practical to improve operating efficiency, reduce the workload of personnel, improve the operation method of equipment, and buy time for our army's emergency operations and rescue and disaster relief.

In order to achieve the above object, the technical solution provided by the utility model is:

The folding trolley includes a handle, an upper hook lock, an overturning frame, a support rod, a lower hook lock, universal wheels, a telescopic frame, a front wheel, a front wheel bracket, and a handle brace; the overturning frame is a frame structure, and the overturning frame There is a track on the inner side, the lower end of the handle is connected with the turning frame by means of a pulley embedded in the track, and the lower end of the handle is provided with a handle lower beam; one end of the handle stay is connected to the middle of the handle by bolts, and the other end is connected to the upper end of the turning frame by bolts connection; the upper part of the handle is provided with a handle crossbeam; the upper end of the reversing frame is provided with a reversing frame beam, and the hook lock is installed on the reversing frame beam; the lower end of the reversing frame is connected with the front wheel bracket; the telescopic frame is divided It is the front fixed part and the rear movable part; the front wheel bracket is connected with the front end of the fixed part of the telescopic vehicle frame; the front wheel is installed on the front wheel bracket; The ends are connected by bolts, and the upper end of the support rod is connected with the middle part of the flip frame by bolts; the rear end of the movable part of the telescopic frame is provided with a rear beam of the frame, and the lower hook lock is installed on the rear beam of the frame; The rear end of the fixed part of the telescopic vehicle frame is provided with a beam in the middle of the vehicle frame; the universal wheels are installed at the rear end of the telescopic vehicle frame.

Wherein, in order to improve the operator's feel, the upper end of the handle is covered with a plastic sheath. A baffle plate is installed at the lower end of the turning frame, and the baffle plate is made of high-quality steel plate, which is riveted on the front wheel support frame and can be used as a fork plate. The movable part at the rear of the telescopic vehicle frame is connected with the fixed part at the front by inserting, and when the vehicle frame of the movable part shrinks toward the fixed part, the turning frame is lifted. The swivel wheels are made of sturdy and durable single casters with strong bearing capacity, the steering angle is 360°, and the design is replaceable. Casters consist of flat bearings, fasteners and wheels. The plane bearing can not only meet the bearing requirements, but also make the rotation more flexible. In addition, the two front wheels are connected by a wheel shaft, and the wheel shaft is fitted on the front wheel bracket through the hole shaft, and the environmentally friendly PU foamed solid tire is used, with a diameter of 250mm.

The upper hook lock and the lower hook lock are multi-directional self-locking structures, including an upper cover, a lower cover, a bushing, a spring, a rivet and a fixing rod; The lock structure body is divided into a hook part and an armrest part; the hook part is provided with a shaft hole; the fixed rod is connected with the hook part through the shaft hole; the bushing is arranged between the contact surface of the fixed rod and the hook part The bush and the fixed rod are connected by rivets; the bush is provided with a front end convex plate, and the front end convex plate is provided with a downward boss; the inside of the lower cover is provided with an upward convex aligned with the downward boss platform; one end of the spring is sleeved on the upward boss, and the other end is sleeved on the downward boss. The hook portion includes a first hook portion and a second hook portion, the top end of the upper cover is the first hook portion, and the front end of the lower cover is the second hook portion. The upper cover and the lower cover are closed and connected by screws. Referring to Figure 8, when the rod to be locked enters the self-locking structure from the front direction of the self-locking structure, the self-locking structure will be lifted, the spring will be compressed, and after the rod enters the hook, the spring will reset and hook the workpiece to achieve locking. The self-locking structure can be designed with two locking hooks to meet the locking needs in two positions.

When using a foldable trolley, you can raise or lower the overturning frame, the movable part of the telescopic frame moves relative to the fixed part, hook the crossbeam in the middle of the frame with the lower hook lock, at this time, the position of the movable part is fixed, and the overturning frame The angle is also locked, and it is used as a trolley in the hauling state, that is, the telescopic frame is shrunk, and the lower hook lock is used to hook the crossbeam in the middle of the frame, the telescopic part of the telescopic frame is locked with the fixed part, the tilting frame is tilted, and the trolley is haul status. When the reversing frame and the telescopic frame are close together, use the lower hook lock to hook the reversing frame beam, fix the reversing frame, and use it as a trolley in a cable-stayed state, that is, stretch the telescopic frame and hook the reversing frame with the lower hook lock The crossbeam, the overturning frame and the telescopic frame are locked, the handle is lifted, the universal wheels are off the ground, and the trolley is in a cable-stayed state (Figure 3). When it is necessary to carry heavy materials in a horizontal push method, you can lift the handle, and the pulley will move in the track inside the turning frame. When the handle is fully lifted, the pulley is close to the upper end of the turning frame. At this time, use the hook lock to hook the lower beam of the handle, and the handle The position is locked and used as a trolley in a flat push state, that is, move the handle to the end of the trolley, and hook the lower beam of the handle with the hook lock, lift the handle, and the trolley is in a flat push state (Figure 4); when the handle is reset, Then use the hook lock to lock the upper beam of the handle to lock the position of the handle.

The overall design of the utility model The overall design of the utility model is a kind of conveying equipment, which makes up for the lack of conveying force that cannot reach the destination due to the large volume of the motorized conveying equipment under complex terrain conditions. In order to store the trolley more conveniently and to meet the transportation of heavy materials, the trolley is divided into three states: tilting, hauling, and flat pulling. The utility model adopts big front wheels and is more suitable for off-road walking. Environmentally friendly PU foamed solid tires are used to reduce maintenance costs and save maintenance time. The trolley adopts a light aluminum alloy frame structure, which makes the operation more labor-saving. The utility model adopts the PDM design method, has a high generalization degree of components, and completes the standardized design work of various models. It makes interchangeable maintenance more convenient and reduces maintenance and troop supply costs. The inclination angle of the turning frame can be suitable for different users' force conditions, and it also provides convenience for transporting materials that cannot be completely inverted, such as oil drums and gas cylinders. The appropriate adjustment speed can be selected according to the situation to ensure that the transported materials will not be affected during the height adjustment process, and it also has a certain protective effect on the safety of the operator. The telescopic frame can keep the goods stable during transportation to the greatest extent when it is extended, and it can also ensure that the operator's leg movement will not be restricted by the frame during transportation when it is shortened. When transporting heavy or bulky materials, the flat pull type can be used. The movable handle can be rotated 90° to meet the needs of force points when pushing flat. The normal travel speed of the foldable handcart described in the utility model is 1.0m/s, and the running speed can reach 2.0m/s, which greatly reduces the working intensity of personnel.

Description of drawings

Fig. 1 is the structure schematic diagram of the utility model folding trolley;

Fig. 2 is a side view of the utility model folding trolley;

Fig. 3 is a schematic diagram of the oblique pull state of the folding trolley of the present invention;

Fig. 4 is a schematic diagram of the flat pushing state of the folding trolley of the present invention;

Fig. 5 is a structural schematic diagram of a multidirectional self-locking structure of the present invention;

Fig. 6 is a bottom view of the utility model multi-directional self-locking structure;

Fig. 7 is the A-A plan view of Fig. 6;

Fig. 8 is a working schematic diagram of the multi-directional self-locking structure of the present invention.

In the figure: 1. handle; 2. upper hook lock; 3. overturn frame; 4. support rod; 5. lower hook lock; 6. universal wheel; 7. telescopic frame; 8. front wheel; 9. front wheel bracket 10, baffle plate; 11, handle strut; 12, handle lower beam; 13, overturn frame beam; 14, frame rear end beam; 15, frame middle beam; 16, handle upper beam; 17, upper cover; 18. Lower cover; 19. Bushing; 20. Spring; 21. Rivet; 22. Fixing rod; 23. Hook; 24. Armrest; 25. Shaft hole;

detailed description

Example 1

Referring to Figures 1 to 8, the foldable trolley includes a handle 1, an upper hook lock 2, a flip frame 3, a support rod 4, a lower hook lock 5, a universal wheel 6, a telescopic frame 7, a front wheel 8, and a front wheel bracket 9. Handle support rod 11; the turning frame 3 is a frame structure, and a track is provided on the inside of the turning frame 3, and the lower end of the handle 1 is connected to the turning frame 3 by means of a pulley embedded in the track, and the lower end of the handle 1 is provided with a handle lower crossbeam 12. One end of the handle strut 11 is connected with the middle part of the handle 1 by bolts, and the other end is connected with the upper end of the turning frame 3 by bolts; the upper part of the handle 1 is provided with a handle upper beam 16; the upper end of the turning frame 3 is provided with a turning frame The crossbeam 13, the upper hook lock 2 is installed on the crossbeam 13 of the reversing frame; the lower end of the reversing frame 3 is connected with the front wheel bracket 9; the telescopic vehicle frame 7 is divided into a front fixed part and a rear movable part; The wheel support 9 is connected with the front end of the fixed part of the telescopic vehicle frame 7; the front wheel 8 is installed on the front wheel support 9; The upper end and the middle part of the flip frame 3 are connected by bolts; the rear end of the movable part of the telescopic vehicle frame 7 is provided with a frame rear end crossbeam 14, and the lower hook lock 5 is installed on the vehicle frame rear end crossbeam 14; The rear end of the fixed part of the frame 7 is provided with a crossbeam 15 in the middle of the frame;

Wherein, the upper end of the handle 1 is covered with a plastic sheath. A baffle plate 10 is installed at the lower end of the flip frame 3 . The movable part at the rear of the telescopic vehicle frame 7 is connected with the fixed part at the front by inserting.

The upper hook lock and the lower hook lock are multi-directional self-locking structures, and the multi-directional self-locking structure includes an upper cover 17, a lower cover 18, a bushing 19, a spring 20, a rivet 21 and a fixing rod 22; the upper cover 17 Close up with the lower cover 18 to form a self-locking structure body, the self-locking structure body is divided into a hook portion 23 and a handrail portion 24; the hook portion 23 is provided with a shaft hole 25; the fixed rod 22 passes through the shaft hole 25 and The hook portion 23 is mated and connected; the bushing 19 is arranged between the contact surface of the fixing rod 22 and the hook portion 23; the bushing 19 and the fixing rod 22 are connected by a rivet 21; the bushing 19 is provided with a front end convex plate 26, the front end convex plate 26 is provided with a downward boss; the inner side of the lower cover 18 is provided with an upward boss aligned with the downward boss; one end of the spring 20 is set on the upward boss, and the other end is set On the downward facing boss.

Wherein, the hook portion 23 includes a first hook portion and a second hook portion, the top end of the upper cover 17 is the first hook portion, and the front end of the lower cover 18 is the second hook portion. The upper cover 17 and the lower cover 18 are closed and connected by screws.

Claims (7)

1. a Foldable pushcart, it is characterized in that, described Foldable pushcart comprises handle (1), upper hook lock (2), turning rack (3), strut bar (4), lower hook lock (5), cardan wheel (6), flexible vehicle frame (7), front-wheel (8), front-wheel support (9), handle strut (11); Described turning rack (3) is framed structure, and turning rack (3) inner side is provided with track, and the mode that described handle (1) lower end is embedded in track by pulley is connected with turning rack (3), and handle (1) lower end is provided with lower portion thereof crossbeam (12); Described handle strut (11) one end and handle (1) middle part with bolts, the other end and turning rack (3) upper end with bolts; Described handle (1) top is provided with handle upper portion crossbeam (16); Described turning rack (3) upper end is provided with turning rack crossbeam (13), and described upper hook lock (2) is arranged on turning rack crossbeam (13); Described turning rack (3) lower end is connected with front-wheel support (9); Described flexible vehicle frame (7) is divided into anterior fixed part and rear portion moving part; Described front-wheel support (9) is connected with the front end of flexible vehicle frame (7) fixed part; Described front-wheel (8) is arranged on front-wheel support (9); The rear end of described strut bar (4) lower end and flexible vehicle frame (7) moving part is with bolts, strut bar (4) upper end and turning rack (3) middle part with bolts; The rear end of described flexible vehicle frame (7) moving part is provided with end floor beam (14) after vehicle frame, and described lower hook lock (5) to be arranged on after vehicle frame on end floor beam (14); The rear end of described flexible vehicle frame (7) fixed part is provided with vehicle frame middle beam (15); Described cardan wheel (6) is arranged on flexible vehicle frame (7) rear end.

2. Foldable pushcart as claimed in claim 1, it is characterized in that, described handle (1) upper end is surrounded by plastic sheath.

3. Foldable pushcart as claimed in claim 1, it is characterized in that, described turning rack (3) lower end is provided with baffle plate (10).

4. Foldable pushcart as claimed in claim 1, is characterized in that, described flexible vehicle frame (7) rear portion moving part adopts the mode inserted to be connected with anterior fixed part.

5. Foldable pushcart as claimed in claim 1, it is characterized in that, described upper hook lock and lower hook lock are multi-aspect self-locking structure, and described multi-aspect self-locking structure comprises upper cover (17), lower cover (18), lining (19), spring (20), rivet (21) and fixed link (22); Described upper cover (17) and lower cover (18) close up rear formation self-locking structure body, and described self-locking structure body is divided into hook portion (23) and armrest part (24); Described hook portion (23) is provided with axis hole (25); Described fixed link (22) is connected through axis hole (25) and hook portion (23); Described lining (19) is located between the contact surface of fixed link (22) and hook portion (23); Described lining (19) is connected by rivet (21) with fixed link (22); Described lining (19) is provided with front end flange (26), and front end flange (26) is provided with towards lower bulge; Described lower cover (18) inner side be provided with aim at towards lower bulge towards convex platform; Described spring (20) one end is enclosed within towards on convex platform, and the other end is enclosed within towards on lower bulge.

6. multi-aspect self-locking structure as claimed in claim 5, is characterized in that, described hook portion (23) comprises the first hook portion and the second hook portion, and described upper cover (17) top is the first hook portion, and described lower cover (18) front end is the second hook portion.

7. multi-aspect self-locking structure as claimed in claim 5, is characterized in that, described upper cover (17) adopts screw to be connected with lower cover (18).