Sliding suspension arm of self-walking crane

Abstract

The utility model belongs to the technical field of hoisting mechanical parts, and relates to a sliding suspension arm of a self-walking crane, which comprises a fixed frame, a rotating suspension arm fixedly connected with the inner wall of the fixed frame, a hydraulic cylinder I fixedly connected with the interior of the rotating suspension arm, and a sliding suspension arm I fixedly connected with the output end of the hydraulic cylinder I, the outer wall of the first sliding suspension arm is slidably connected to the inner wall of the rotating suspension arm, and the inner wall of the first sliding suspension arm is slidably connected with a second sliding suspension arm; the inner walls of the two ends of the first sliding suspension arm are fixedly connected with two fixing columns, the outer walls of the fixing columns are rotationally connected with toothed concave wheels, the interior of the first sliding suspension arm is rotationally connected with a toothed transmission belt, and the toothed transmission belt is meshed with the toothed concave wheels; a fixed shaft I is fixedly connected to one side of the outer wall of the toothed transmission belt, one end of the fixed shaft I is fixedly connected to the interior of the rotating suspension arm, a fixed shaft II is fixedly connected to the other side of the outer wall of the toothed transmission belt, and one end of the fixed shaft II is fixedly connected to the interior of the sliding suspension arm II; a protection assembly is arranged in the second sliding suspension arm.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hoisting machinery parts relates to a self -walking crane's sliding boom. BACKGROUND

[0002] Self -walking crane is a kind of crane, its feature is that can be in the site, port, warehouse and so on Place self -moving, need not additional transport equipment.Sliding boom is the important component of self -walking crane, it is responsible for undertaking the task of lifting and transporting goods, sliding boom is usually made of high-strength steel, such as manganese steel, to withstand various adverse working conditions, such as impact, extrusion and material wear.The structure of the boom can be divided into two parts of main arm and auxiliary arm.The main arm usually adopts truss structure or box structure, and the auxiliary arm is mainly used to assist the main arm to lift lighter objects.

[0003] The patent with the announcement number CN204265329U discloses a telescopic boom structure, preferably improves the strength of the hydraulic cylinder piston rod, to ensure the safety of the crane, its features are that: it includes middle connecting pipe, the middle connecting pipe both ends are sleeved with telescopic rod, the middle connecting pipe is provided with double piston rod cylinder, the piston rod of double piston rod cylinder is connected with the telescopic rod of both ends respectively, the telescopic movement of telescopic rod is driven by double piston rod cylinder in the application, the strength requirement of the piston rod of cylinder is higher by this arrangement, if the strength of piston rod is insufficient, it can affect the safety of crane. UTILITY MODEL CONTENTS

[0004] In order to make up for the above insufficient, the utility model provides a self -walking crane's sliding boom, aims at improving the problem of insufficient piston rod strength when boom telescoping, affecting the safety of crane.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The utility model provides a kind of sliding boom of self-walking crane, including fixed frame, the inner wall of the fixed frame is fixedly connected with rotating boom, the inside of the rotating boom is fixedly connected with hydraulic cylinder one, the output end of the hydraulic cylinder one is fixedly connected with sliding boom one, the outer wall of the sliding boom one is slidably connected in the inner wall of the rotating boom, the inner wall of the sliding boom one is slidably connected with sliding boom two;The inner wall of the both ends of the sliding boom one is fixedly connected with two fixed columns, the outer wall of the fixed column is rotatably connected with toothed recessed wheel, the inside of the sliding boom one is rotatably connected with toothed transmission belt, and the toothed transmission belt is engaged with toothed recessed wheel;The outer wall one side of the toothed transmission belt is fixedly connected with fixed shaft one, and one end of the fixed shaft one is fixedly connected in the inside of the rotating boom, the outer wall other side of the toothed transmission belt is fixedly connected with fixed shaft two, and one end of the fixed shaft two is fixedly connected in the inside of the sliding boom two;The inside of the sliding boom two is provided with protection assembly.

[0007] Further, the protection assembly includes a sliding sleeve, and the outer wall of the sliding sleeve is fixedly connected to the inside of the sliding boom two.

[0008] Further, the inside of the sliding boom two is fixedly connected with a hydraulic cylinder two, and the output end of the hydraulic cylinder two is fixedly connected with a sliding column.

[0009] Further, one end of the sliding column is fixedly connected with a telescopic rod, and one end of the telescopic rod is fixedly connected to the inner wall of the sliding sleeve.

[0010] Further, the outer wall of the telescopic rod is sleeved with a spring, and one end of the spring is fixedly connected to the inner wall of the sliding sleeve.

[0011] Further, the other end of the spring is fixedly connected to one end of the sliding column, and the outer wall of the sliding column is slidably connected to the inside of the sliding boom two.

[0012] Further, the inside of the sliding boom two is fixedly connected with a rotating rod, and the outer wall of the rotating rod is rotatably connected with a clamping block.

[0013] Further, the outer wall of the clamping block is slidably connected to the inside of the sliding column and the sliding boom two.

[0014] The utility model has the advantages of:

[0015] 1. The utility model discloses a hydraulic cylinder one of opening rotation boom, through its output end drive sliding boom inside rotation boom, has played the effect of driving, because the one side fixed in the rotation boom inner wall of toothed transmission belt, make it rotate between two toothed recessed wheel when moving, and then through fixed axle drive another sliding boom in sliding boom inner wall sliding, realize the effect that boom gradually lengthens, solved the problem that piston rod strength is insufficient when boom retracts and affects crane safety, reached to the boom gradually lengthens, thereby to a certain extent reduce piston rod working pressure and improve the effect of crane safety.

[0016] 2. The utility model discloses through hydraulic cylinder two output end push slip post inside boom sliding, has played the effect of driving, and then push the one end of clamping block rotation, make clamping block other end enter sliding boom inside, reached the effect that fixed to the boom after lengthening, this process through the movement of slip post, make spring contract under the guidance of telescopic rod, auxiliary hydraulic cylinder will slip post return to the original place to the effect that clamping block is driven to return to sliding boom inside, reached to the boom after retracting fixed, make boom more stable effect when using. DRAWINGS

[0017] Figure 1 It is the main body structure schematic drawing of sliding boom of a kind of self-propelled crane proposed in the utility model;

[0018] Figure 2 It is the rotation boom section view schematic drawing of sliding boom of a kind of self-propelled crane proposed in the utility model;

[0019] Figure 3 It is the sliding boom one section view schematic drawing of sliding boom of a kind of self-propelled crane proposed in the utility model.

[0020] In the drawing: 1, fixed frame;2, rotation boom;3, sliding boom one;4, sliding boom two;5, hydraulic cylinder one;6, fixed column;7, toothed recessed wheel;8, toothed transmission belt;9, fixed axle one;10, fixed axle two;11, hydraulic cylinder two;12, slip post;13, sliding sleeve;14, rotating rod;15, clamping block;16, spring;17, telescopic rod. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further illustrated below in combination with the drawings and technical solutions.

[0022] Refer to Figures 1-2The utility model provides an embodiment: a kind of sliding boom of self-walking crane, fixed frame 1 is internally fixedly connected with rotating boom 2, the inside fixedly connected with hydraulic cylinder one 5 of rotating boom 2, the output end fixedly connected with sliding boom one 3 of hydraulic cylinder one 5, the outer wall sliding connection of sliding boom one 3 is in the inner wall of rotating boom 2, the inner wall sliding connection of sliding boom one 3 has sliding boom two 4;Two fixed columns 6 are fixedly connected with the inner wall of the both ends of sliding boom one 3, the outer wall rotationally connected with toothed recess wheel 7 of fixed column 6, the inside rotationally connected with toothed transmission belt 8 of sliding boom one 3, toothed transmission belt 8 is engaged with toothed recess wheel 7;The outer wall one side fixedly connected with fixed shaft one 9 of toothed transmission belt 8, one end of fixed shaft one 9 is fixedly connected in the inside of rotating boom 2, the outer wall other side fixedly connected with fixed shaft two 10 of toothed transmission belt 8, one end of fixed shaft two 10 is fixedly connected in the inside of sliding boom two 4;Protective assembly is provided in the inside of sliding boom two 4;

[0023] Specifically, first start rotating boom 2 inside hydraulic cylinder one 5, the role of hydraulic cylinder one 5 is to convert hydraulic energy into mechanical energy, to drive sliding boom one 3 to slide in the inside of rotating boom 2, this process is actually through the output end of hydraulic cylinder one 5 to transmit power, make sliding boom one 3 move along the inner wall of rotating boom 2, the movement of sliding boom one 3 is not carried out alone, but is closely combined with the inside toothed transmission belt 8, toothed transmission belt 8 is in the inside of sliding boom one 3, moves along with the movement of boom, it is worth noting that the outer wall one side of toothed transmission belt 8 is fixed in the inner wall of rotating boom 2 by fixed shaft one 9, this means that when sliding boom one 3 drives toothed transmission belt 8 to move, toothed transmission belt 8 will rotate between two toothed recess wheels 7, next, the rotation of toothed transmission belt 8 is transmitted to sliding boom two 4 by fixed shaft two 10, since fixed shaft two 10 is connected with sliding boom two 4, therefore the rotation of toothed transmission belt 8 will drive sliding boom two 4 to slide in the inner wall of sliding boom one 3, this process makes the whole boom present the effect of elongation.

[0024] Refer to Figure 3 Protective assembly includes sliding sleeve 13, the outer wall fixedly connected in the inside of sliding boom two 4 of sliding sleeve 13;

[0025] Specifically, sliding sleeve 13 protects the inside spring 16, achieves the effect of protection.

[0026] Refer to Figure 3The inner part of the sliding boom two 4 is fixedly connected with a hydraulic cylinder two 11, the output end of the hydraulic cylinder two 11 is fixedly connected with a sliding column 12, one end of the sliding column 12 is fixedly connected with an extension rod 17, one end of the extension rod 17 is fixedly connected to the inner wall of a sliding sleeve 13, the outer wall of the extension rod 17 is sleeved with a spring 16, one end of the spring 16 is fixedly connected to the inner wall of the sliding sleeve 13, the other end of the spring 16 is fixedly connected to one end of the sliding column 12, the outer wall of the sliding column 12 is slidably connected to the inner part of the sliding boom two 4, the inner part of the sliding boom two 4 is fixedly connected with a rotating rod 14, the outer wall of the rotating rod 14 is rotatably connected with a clamping block 15, the outer wall of the clamping block 15 is slidably connected to the inner part of the sliding boom two 4 and the sliding column 12;

[0027] Specifically, the hydraulic cylinder two 11 in the sliding boom two 4 is opened, the sliding column 12 is pushed to slide in the sliding boom two 4 through the output end of the hydraulic cylinder two 11, which drives one end of the clamping block 15 to rotate on the outer wall of the rotating rod 14, and further drives the other end of the clamping block 15 to rotate to the inner part of the sliding boom one 3, so as to fix the stretched boom. In this process, the movement of the sliding column 12 drives the spring 16 to contract under the guidance of the extension rod 17, and the contraction of the spring 16 assists the hydraulic cylinder two 11 to reset the sliding column 12, so as to drive the clamping block 15 to return to the inner part of the sliding boom two 4, which realizes the fixing and releasing of the boom.

[0028] Working principle: when the sliding boom of the self-walking crane needs to be used, the hydraulic cylinder one 5 in the rotating boom 2 is opened first, the sliding boom one 3 is driven to slide in the rotating boom 2 through the output end of the hydraulic cylinder one 5, so as to drive the toothed transmission belt 8 in the sliding boom one 3 to move. Since the outer wall of the toothed transmission belt 8 is fixed to the inner wall of the rotating boom 2 by the fixed shaft one 9, the toothed transmission belt 8 rotates between the two toothed recessed wheels 7 when moving, and further drives the sliding boom two 4 to slide in the inner wall of the sliding boom one 3 through the fixed shaft two 10, so as to realize the effect of stretching the boom. Then the hydraulic cylinder two 11 in the sliding boom two 4 is opened, the sliding column 12 is pushed to slide in the sliding boom two 4 through the output end of the hydraulic cylinder two 11, so as to drive one end of the clamping block 15 to rotate on the outer wall of the rotating rod 14, and further drive the other end of the clamping block 15 to rotate to the inner part of the sliding boom one 3, so as to fix the stretched boom. In this process, the movement of the sliding column 12 drives the spring 16 to contract under the guidance of the extension rod 17, and the contraction of the spring 16 assists the hydraulic cylinder two 11 to reset the sliding column 12, so as to drive the clamping block 15 to return to the inner part of the sliding boom two 4, which realizes the effect of fixing and releasing.

Claims

1. A sliding boom of a self-propelled crane, comprising a fixed frame (1), characterized in that: A rotating boom (2) is fixedly connected to the inner wall of the fixed frame (1). A hydraulic cylinder (5) is fixedly connected inside the rotating boom (2). A sliding boom (3) is fixedly connected to the output end of the hydraulic cylinder (5). The outer wall of the sliding boom (3) is slidably connected to the inner wall of the rotating boom (2). A sliding boom (4) is slidably connected to the inner wall of the sliding boom (3). Two fixed columns (6) are fixedly connected to the inner walls at both ends of the sliding boom (3). A toothed concave wheel (7) is rotatably connected to the outer wall of the fixed column (6). A toothed drive belt (8) is rotatably connected inside the sliding boom (3), and the toothed drive belt (8) meshes with a toothed concave wheel (7); a fixed shaft (9) is fixedly connected to one side of the outer wall of the toothed drive belt (8), and one end of the fixed shaft (9) is fixedly connected to the inside of the rotating boom (2); a fixed shaft (10) is fixedly connected to the other side of the outer wall of the toothed drive belt (8), and one end of the fixed shaft (10) is fixedly connected to the inside of the sliding boom (4); a protective component is provided inside the sliding boom (4).

2. The sliding boom of a self-propelled crane according to claim 1, characterized in that: The protective component includes a sliding sleeve (13), the outer wall of which is fixedly connected to the inside of the sliding boom (4).

3. The sliding boom of a self-propelled crane according to claim 2, characterized in that: The sliding boom 2 (4) is internally fixedly connected to a hydraulic cylinder 2 (11), and the output end of the hydraulic cylinder 2 (11) is fixedly connected to a sliding column (12).

4. The sliding boom of a self-propelled crane according to claim 3, characterized in that: One end of the sliding column (12) is fixedly connected to a telescopic rod (17), and one end of the telescopic rod (17) is fixedly connected to the inner wall of the sliding sleeve (13).

5. The sliding boom of a self-propelled crane according to claim 4, characterized in that: A spring (16) is fitted on the outer wall of the telescopic rod (17), and one end of the spring (16) is fixedly connected to the inner wall of the sliding sleeve (13).

6. The sliding boom of a self-propelled crane according to claim 5, characterized in that: The other end of the spring (16) is fixedly connected to one end of the sliding column (12), and the outer wall of the sliding column (12) is slidably connected to the inside of the sliding boom (4).

7. The sliding boom of a self-propelled crane according to claim 6, characterized in that: The sliding boom 2 (4) is internally fixedly connected to a rotating rod (14), and the outer wall of the rotating rod (14) is rotatably connected to a locking block (15).

8. The sliding boom of a self-propelled crane according to claim 7, characterized in that: The outer wall of the card block (15) is slidably connected to the inside of the sliding column (12) and the sliding boom (4).

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