Supporting device for lazy arm of lorry-mounted crane

Abstract

The utility model discloses a supporting device of a lorry-mounted crane boom, which relates to the technical field of boom supporting, and comprises a fire truck lorry-mounted crane mounted at the top of a fire truck and used for hoisting rescue of the fire truck, and a supporting component mounted at the top of the fire truck, the supporting assembly is used for supporting the fire fighting truck-mounted crane, the situation that in the moving process of a fire fighting truck, the fire fighting truck-mounted crane shakes, and danger is caused to vehicle running is avoided, the supporting assembly comprises a sliding supporting plate, the fire fighting truck-mounted crane is placed on the supporting plate, and the supporting plate limits the fire fighting truck-mounted crane. Force generated when the truck-mounted crane shakes is absorbed through sliding of the supporting plate, the truck is prevented from shaking, the turning risk is reduced, and meanwhile the risk that an illuminating lamp, a rescue ladder and a telescopic water pipe on the truck-mounted crane collide with a carriage body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boom support, in particular to a support device for the boom of a truck-mounted crane. Background Art

[0002] The fire truck crane is also called the fire truck crane. It is widely used in fire truck lifting and rescue. It can be operated left and right, can rotate 360° forward and backward, and can also rotate in all directions. It works fast. Related models include 7-ton, 10-ton, 12-ton, etc., branch arm and folding arm cranes. The branch arm type boom usually consists of three or four sections of the boom, which is installed on the chassis beam of the fire truck; when the crane is not working and the vehicle is driving, the vehicle shakes left and right, which will cause the crane arm to shake more, causing the lighting, rescue ladder, and telescopic water pipe installed on the crane to collide with the car body, thereby aggravating the shaking of the vehicle and increasing the risk of rollover; at the same time, it will also damage the turntable, frame, and supporting cylinder of the crane itself.

[0003] The Chinese utility model patent with announcement number CN215711292U discloses a folding arm crane support structure. This device supports the first boom and the second boom by means of a rotating assembly and a connecting assembly, thereby improving the support strength of the boom. However, this device cannot support the boom on a fire truck, and this device cannot locate the support position of the boom. Utility Model Content

[0004] In view of the problems existing in the above-mentioned technology, the utility model provides a supporting device for the boom of a truck-mounted crane.

[0005] In view of the above technical problems, the utility model adopts the following technical solutions: a supporting device for the boom of a truck-mounted crane, comprising a truck-mounted crane for a fire truck and a supporting assembly installed on a fire truck, the supporting assembly comprising a base installed on the top of the fire truck, a side bracket being arranged on the base, a supporting frame being arranged on the side bracket, a supporting plate being slidably arranged on the supporting frame, a rubber pad being arranged on the supporting plate, the boom of the truck-mounted crane for the fire truck being placed on the rubber pad when not in operation, a spring being arranged between the supporting plate and the supporting frame, the spring driving the supporting plate to reset, a group of limit plates being arranged on both sides of the support plate, the limit plates positioning the boom of the truck-mounted crane for the fire truck.

[0006] Furthermore, the base is composed of two parts of plates welded together and fixed to the top of the car body, the side brackets are made of sheet metal bent and welded, and the base and the side brackets are fixedly connected by bolts.

[0007] Furthermore, the support frame is formed by welding a rectangular tube and a flat plate, and the side bracket is fixedly connected to the support frame by bolts.

[0008] Furthermore, the base, side brackets, limit plates, support frames, support columns, support plates, and adjustment rings are all made of 304 steel.

[0009] Furthermore, an adjusting ring is rotatably provided at the lower end of the supporting column, and the supporting column and the adjusting ring are connected via threads.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model automatically supports the boom and locates the falling position of the boom to ensure the correct placement of the boom, protects the contact end of the boom to avoid bumps when the boom is placed, and supports various types of booms by adjusting the moving stroke of the support plate when it is under pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the right view of the overall structure of the utility model.

[0012] Figure 2 It is a left view of the overall structure of the utility model.

[0013] Figure 3 It is an overall schematic diagram of the utility model.

[0014] Figure 4 This is a front view of the support component structure of the utility model.

[0015] Figure 5 It is a left view of the support assembly of the utility model.

[0016] Figure 6 This is a cross-sectional view of the support component structure of the utility model.

[0017] Figure 7 This is a schematic diagram of the structure of the support assembly of the utility model.

[0018] Figure numerals: 1-fire truck crane; 2-support assembly; 201-base; 202-side bracket; 203-rubber pad; 204-limiting plate; 205-support frame; 206-support column; 207-spring; 208-support plate; 209-adjusting ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", "third" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, it does not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of the embodiments of the present invention, if “a plurality of” appears, it means at least 2.

[0024] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] refer to Figure 1-Figure 7The support device of the boom of a truck-mounted crane shown in the figure includes a base 201 installed on the top of the fire truck compartment, a support plate 208 for supporting the boom is arranged on the base 201, a spring 207 is arranged on the support plate 208, and the support plate 208 is supported by the elasticity of the spring 207. The support plate 208 supports the boom to prevent the boom from shaking during the movement of the fire truck and causing danger.

[0026] The fire truck crane 1 and the support assembly 2 are both installed on the fire truck. The support assembly 2 includes a base 201, which is installed on the top of the fire truck by welding. The base 201 is composed of two parts of plate welded together. Two groups of side brackets 202 are arranged on the upper end of the base 201. The two groups of side brackets 202 are mirror-mounted on the base 201. The two groups of side brackets 202 are welded by bending sheet metal. The base 201 and the side brackets 202 are fixedly connected by bolts. A support frame 205 is arranged between the two groups of side brackets 202. The support frame 205 is made of rectangular tubes and flat plates, and is fixed to the side bracket 202 by multiple sets of bolts. The support frame 205 is provided with three sets of mounting holes. A support plate 208 is slidably provided on the support frame 205. Three sets of support columns 206 are provided at the lower end of the support plate 208. The support columns 206 are inserted into the mounting holes of the support frame 205. The support columns 206 are slidably connected to the mounting holes on the support frame 205. An adjusting ring 209 is slidably provided at the lower end of the support column 206. The support column 206 and the adjusting ring 209 are connected. 9 is connected by threads. When the support plate 208 does not support the boom, the adjusting ring 209 is always in contact with the bottom of the support frame 205. When the adjusting ring 209 is twisted, the position of the adjusting ring 209 on the support column 206 is changed. Three groups of springs 207 are arranged between the support plate 208 and the support frame 205. The springs 207 are sleeved on the outside of the support column 206. A rubber pad 203 is arranged on the upper end of the support plate 208. The boom on the fire truck crane 1 is placed on the rubber pad 203. The rubber pad 203 is for the fire truck crane 1. It provides protection to prevent the boom on the fire truck crane 1 from being bumped, and the rubber pad 203 provides a buffer force for the boom. A set of limit plates 204 are arranged on both sides of the support plate 208. The limit plates 204 position the two sides of the fire truck crane 1 to prevent the position deviation of the fire truck crane 1 when it is placed on the support assembly 2. When the position of the adjusting ring 209 on the support column 206 changes, the position between the support plate 208 and the support frame 205 is changed, thereby changing the moving stroke of the support plate 208 when it is subjected to force.

[0027] Working principle: after the work of the fire truck crane 1 is completed, the boom of the fire truck crane 1 is placed on the rubber pad 203. The rubber pad 203 first cushions the boom and protects the contact position of the boom. When the boom of the fire truck crane 1 is lowered, the operator determines the lowering position of the boom according to the positions of the two sets of limit plates 204, and places the boom between the two sets of limit plates 204 to avoid deviation in the placement position of the boom. When the boom is placed on the support plate 208, the support plate 208 receives the downward pressure of the boom. At this time, the support plate 208 slides on the support frame 205, and the support plate 208 presses the spring 207. At this time, the support plate 208 cushions the descent of the boom. At this time, the lowering of the boom is completed, and the support of the boom is completed. During the movement of the fire truck, the shaking of the fire truck crane 1 is reduced to avoid safety problems such as rollover.

[0028] When the specifications and quality of the boom on the fire truck crane 1 change, it is necessary to change the movement stroke of the support plate 208 to ensure the support and buffering effect of the boom on the fire truck crane 1. Turn the adjusting ring 209 to rotate on the support column 206 to change the distance between the support plate 208 and the support frame 205. When the adjusting ring 209 is pressed, it drops. When the spring 207 reaches the maximum compression value, the support plate 208 no longer moves. By changing the distance between the support plate 208 and the support frame 205, the movement of the support plate 208 when it is under pressure is changed. When supporting a heavier boom, it is ensured that the stroke of the support plate 208 can complete the buffering of the boom.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support device for a boom of a truck-mounted crane, comprising a truck-mounted crane (1) mounted on a fire truck and a support assembly (2), characterized in that: The support assembly (2) comprises a base (201) installed on the top of the fire truck, a side bracket (202) is arranged on the base (201), a support frame (205) is arranged on the side bracket (202), a support plate (208) is slidably arranged on the support frame (205), a rubber pad (203) is arranged on the support plate (208), the boom on the fire truck crane (1) is placed on the rubber pad (203) when not in operation, a spring (207) is arranged between the support plate (208) and the support frame (205), the spring (207) drives the support plate (208) to reset, and a group of limit plates (204) are arranged on both sides of the support plate (208), and the limit plates (204) position the boom of the fire truck crane (1).

2. The support device for the boom of a truck-mounted crane according to claim 1, characterized in that: The base (201) is formed by welding two parts of plates and is fixed to the top of the carriage. The side bracket (202) is formed by bending and welding sheet metal. The base (201) and the side bracket (202) are fixedly connected by bolts.

3. The support device for the boom of a truck-mounted crane according to claim 1, characterized in that: The support frame (205) is formed by welding a rectangular tube and a flat plate, and the side bracket (202) is fixedly connected to the support frame (205) by bolts.

4. The support device for the boom of a truck-mounted crane according to claim 1, characterized in that: The base (201), the side bracket (202), the limiting plate (204), the supporting frame (205), the supporting column (206), the supporting plate (208), and the adjusting ring (209) are all made of 304 steel.

5. The support device for the boom of a truck-mounted crane according to claim 1, characterized in that: An adjusting ring (209) is rotatably provided at the lower end of the supporting column (206), and the supporting column (206) and the adjusting ring (209) are connected via threads.

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