Adjustable supporting structure for lagging jack mounting trolley

Abstract

The invention discloses an adjustable supporting structure for an arch frame mounting trolley. The adjustable supporting structure is composed of a supporting body, telescopic arms and supporting legs. The support body is a steel structure support frame, is fixedly connected to the tail end of the arch frame mounting trolley, and supports and fixes the two telescopic arms; the two telescopic arms are symmetrically arranged along the vertical plane of the longitudinal center of the mounting trolley to form an inclined splayed structure; each telescopic arm is a sleeved telescopic mechanism, is obliquely arranged and forms an included angle with the horizontal plane and the vertical plane, the inner end of each telescopic arm is fixed at the longitudinal center of the mounting trolley, and the outer end of each telescopic arm is supported and fixed with the corresponding supporting leg; the supporting legs are telescopic supporting mechanisms used for being supported on the ground, and the two supporting legs are perpendicularly arranged along the horizontal plane. According to the adjustable supporting structure, the inclined splayed supporting structure is adopted, the included angle is formed between the moving direction of the supporting structure and the length direction of the trolley body, and the supporting distance in the front-back direction of the trolley body is increased after the supporting structure extends out, so that the supporting area of the arch frame mounting trolley during operation is increased, and the overall stability is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical design and manufacturing, in particular to the technical field of construction engineering equipment design and manufacturing, and specifically relates to an adjustable supporting structure for an arch frame installation trolley. Background Art

[0002] The arch installation trolley is an engineering equipment used for high-altitude operations in construction projects such as arch installation, steel mesh laying, anchor mesh installation, auxiliary drilling, and charging. It is often used in construction projects such as highways, railways, and hydropower station tunnels. The working environment in the tunnel is harsh, and there are high requirements for the stability of the leg structure. In the prior art, the leg structure of the arch installation trolley generally adopts H-type legs. Because the arch installation trolley is subject to strict requirements on the width of the whole vehicle, the length of this H-type leg structure is limited, resulting in insufficient span of the whole vehicle. In order to increase the span of the arch installation trolley and increase the support distance in the front and rear directions, it is necessary to arrange the leg installation position backward, but lengthening the rear overhang length will reduce the departure angle, which is not convenient for the arch installation trolley to move in the tunnel, and cannot meet the performance requirements of the arch installation trolley. Therefore, it is urgent to design a large-span leg structure with simple structure and stable operation to improve the stability and safety of the arch installation trolley in high-altitude operations. Summary of the invention

[0003] The present invention discloses an adjustable support structure for an arch frame installation trolley in view of the deficiencies of the prior art. The present invention aims to provide an adjustable support structure for an arch frame installation trolley suitable for large tunnel construction.

[0004] The present invention is achieved through the following technical solutions:

[0005] An adjustable support structure for an arch frame installation trolley, characterized in that it is composed of a support body, a telescopic arm and a leg; wherein: the support body is a steel structure support frame, connected and fixed to the rear end of the arch frame installation trolley, and supports and fixes two telescopic arms; the two telescopic arms are symmetrically arranged along the vertical plane of the longitudinal center of the installation trolley, forming an inclined "eight" shape structure; each telescopic arm is a set telescopic mechanism, the telescopic arm is arranged obliquely, and forms an angle with the horizontal plane and the vertical plane, the inner end is fixed to the longitudinal center of the installation trolley, and the outer end is fixed to the leg support; the leg is a telescopic support mechanism used to support the ground, and the two legs are vertically arranged along the horizontal plane.

[0006] The support body further includes: an end plate for connecting and fixing to the rear end of the arch frame mounting trolley; two fixed cavities for installing the telescopic arm; the two fixed cavities are symmetrically arranged along the vertical plane of the longitudinal center of the mounting trolley to form an inclined "eight" shaped structure; each fixed cavity forms an angle with the horizontal plane and the vertical plane, and is connected and fixed to the end plate support through a connecting plate, a reinforcing rib plate one, and a reinforcing rib plate two respectively.

[0007] Further, the telescopic arm includes a first telescopic cavity and a second telescopic cavity; the first telescopic cavity is arranged in the fixed cavity, and the second telescopic cavity is arranged in the first telescopic cavity. The first telescopic cavity and the second telescopic cavity can be telescopically moved along the length direction of the fixed cavity.

[0008] The outrigger further comprises an outrigger mounting seat, an outrigger seat plate, a rib plate, an outrigger oil cylinder, an outrigger lower fixed plate, an outrigger lower movable plate, and an outrigger seat; the outrigger seat plate is fixed at the end of the second telescopic cavity.

[0009] Furthermore, a leg mounting seat is arranged above the leg seat plate, and a lower leg fixing plate is arranged below the leg seat plate, a rib plate is arranged between the leg mounting seat and the lower leg fixing plate, the lower leg movable plate is connected to the lower leg fixing plate by bolts, the upper part of the leg cylinder is fixed to the leg mounting seat by bolts, and the lower part is fixed between the lower leg fixing plate and the lower leg movable plate, and the leg seat is installed below the leg cylinder.

[0010] The adjustable support structure of the present invention adopts an inclined "eight"-shaped support structure. The moving direction of the support structure is set at an angle with the length direction of the vehicle body. After the support structure is extended, the support distance in the front and rear directions of the vehicle body is increased, thereby increasing the support area during the operation of the arch frame installation trolley and improving the overall stability.

[0011] The adjustable support structure of the present invention can reduce the space occupied in the length direction of the whole vehicle, effectively shorten the rear overhang length and the length of the whole vehicle, and improve the passability of the whole vehicle in the tunnel.

[0012] The adjustable support structure of the present invention reduces the space occupation in the width direction, and realizes the movement of the support point to both sides of the vehicle body through the telescopic body, which effectively solves the problem of insufficient anti-overturning stability torque of the arch frame installation trolley when the space in the tunnel is limited.

[0013] The adjustable support structure of the present invention can provide support for the vehicle body in multiple directions, increase the number of support points and the span, and significantly improve the operation stability and safety of the arch frame installation trolley.

[0014] The adjustable support structure of the present invention can be more evenly and reasonably stressed, and can disperse the weight and load borne by the vehicle body, reduce stress concentration, reduce equipment failures, and increase the service life of the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic top view of the telescopic arm of the adjustable support structure of the present invention in a retracted state;

[0016] Figure 2 is a schematic top view of the telescopic arm of the adjustable support structure of the present invention in an extended state;

[0017] Figure 3 is a front schematic diagram of the adjustable support structure of the present invention;

[0018] Figure 4 is a schematic diagram of the support body of the adjustable support structure of the present invention;

[0019] Figure 5 is a schematic diagram of the adjustable support structure legs of the present invention;

[0020] Figure 6 It is a three-dimensional schematic diagram of the adjustable supporting structure of the present invention.

[0021] In the figure, 1 is the support body, 2 is the telescopic arm, 3 is the leg, 1-1 is the end plate, 1-2 is the fixed cavity, 1-3 is the connecting plate, 1-4 is the reinforcing rib plate one, 1-5 is the reinforcing rib plate two, 2-1 is the first telescopic cavity, 2-2 is the second telescopic cavity, 3-1 is the leg mounting seat, 3-2 is the leg seat plate, 3-3 is the rib plate, 3-4 is the leg cylinder, 3-5 is the fixed plate under the leg, 3-6 is the movable plate under the leg, and 3-7 is the leg seat. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0023] Combined with the attached pictures.

[0024] like Figure 1 , Figure 2 , Figure 3 The adjustable support structure for the arch frame installation trolley of the present invention adopts an eight-shaped oblique support leg structure, including a support body 1, a telescopic arm 2, and a support leg 3.

[0025] The support body 1 is composed of an end plate 1-1, a fixed cavity 1-2, a connecting plate 1-3, a reinforcing rib plate 1-4, and a reinforcing rib plate 2 1-5.

[0026] The end plate 1-1 is fixed at the rear end of the arch mounting trolley. The fixed cavity 1-2 forms a certain angle with the length direction of the vehicle body, and at the same time, the fixed cavity 1-2 forms a certain angle with the width direction of the vehicle body. The two fixed cavities 1-2 are symmetrically arranged on both sides of the end plate in an eight-shaped shape. Connecting plates 1-3 are provided on the upper and lower surfaces of the two fixed cavities 1-2 to connect the fixed cavity 1-2 with the end plate 1-1, and reinforcing rib plate 1-4 and reinforcing rib plate 2 1-5 are provided between the fixed cavity and the end plate 1-1. Figure 4 shown.

[0027] The telescopic arm 2 is composed of a first telescopic cavity 2-1 and a second telescopic cavity 2-2. The first telescopic cavity 2-1 is arranged in the fixed cavity 1-2, and the second telescopic cavity 2-2 is arranged in the first telescopic cavity 2-1. The first telescopic cavity 2-1 and the second telescopic cavity 2-2 are telescopically movable along the length direction of the fixed cavity 1-2, and the second telescopic cavity 2-2 can be telescopically movable in the first telescopic cavity 2-1 along the length direction of the fixed cavity 1-2. The increase in the span of the figure-eight oblique legs in the length direction and the width direction of the vehicle body is achieved by extending and moving the first telescopic cavity 2-1 and the second telescopic cavity 2-2 along the length direction of the fixed cavity 1-2.

[0028] The leg 3 includes a leg mounting seat 3-1, a leg seat plate 3-2, a rib plate 3-3, a leg cylinder 3-4, a lower fixed plate 3-5 for the leg, a lower movable plate 3-6 for the leg, and a leg seat 3-7. The leg seat plate 3-2 is fixed to the end of the second telescopic cavity 2-2, a leg mounting seat 3-1 is arranged above the leg seat plate 3-2, a lower fixed plate 3-5 for the leg is arranged below, a rib plate 3-3 is arranged between the leg mounting seat 3-1 and the lower fixed plate 3-5 for the leg, the lower movable plate 3-6 for the leg is connected to the lower fixed plate 3-5 for the leg by bolts, the leg cylinder 3-4 is fixed to the leg mounting seat 3-1 by bolts above, and is fixed between the lower fixed plate 3-5 for the leg and the lower movable plate 3-6 for the leg below, and the leg seat 3-7 is installed below the leg cylinder 3-4. Figure 5 shown.

[0029] The supporting leg 3 follows the first telescopic cavity 2-1 and the second telescopic cavity 2-2 to extend and move along the length direction of the fixed cavity 1-2 to increase the span of the supporting leg 3 in the length direction and the width direction of the vehicle body.

[0030] like Figure 6 As shown, the weight of the vehicle body of the adjustable support structure of the present invention is transferred to the ground through the support legs 3, and the inclined "eight"-shaped support structure can decompose the vertical downward gravity into a vertical component and a horizontal component, and can more evenly distribute the weight of the vehicle body to a larger ground contact area. The stress distribution of the connection parts of the inclined "eight"-shaped support structure is more dispersed; through the simulation analysis of the two structures by finite element analysis software (such as ANSYS, etc.), it can be found that the stress peak value of the connection part of the inclined "eight"-shaped support structure is significantly lower than that of the H-shaped support structure under the same load. The reduction of the stress peak value means that the risk of structural fatigue damage of the equipment is reduced during long-term use, thereby reducing the possibility of equipment failure due to stress concentration.

Claims

1. An adjustable support structure for an arch mounting trolley, characterized in that: It consists of a supporting body, a telescopic arm and legs; wherein: The support body is a steel structure support frame, which is connected and fixed to the rear end of the arch mounting trolley and supports and fixes the two telescopic arms; The two telescopic arms are symmetrically arranged along the vertical plane of the longitudinal center of the installation trolley, forming an inclined "eight" shaped structure; each telescopic arm is a set telescopic mechanism, the telescopic arm is inclinedly arranged, and forms an angle with the horizontal plane and the vertical plane. The inner end is fixed at the longitudinal center of the installation trolley, and the outer end is fixed to the support leg; the support leg is a telescopic support mechanism used to support the ground, and the two legs are vertically arranged along the horizontal plane.

2. The adjustable support structure for the arch mounting trolley according to claim 1, characterized in that: The support body comprises: End plate, used to connect and fix with the rear end of the arch mounting trolley; Two fixed cavities are used to install the telescopic arm; the two fixed cavities are symmetrically arranged along the vertical plane of the longitudinal center of the installation trolley to form an inclined "eight" shaped structure; each fixed cavity forms an angle with the horizontal plane and the vertical plane, and is connected and fixed to the end plate support through the connecting plate, the first reinforcing rib plate, and the second reinforcing rib plate.

3. The adjustable support structure for the arch mounting trolley according to claim 2, characterized in that: The telescopic arm includes a first telescopic cavity and a second telescopic cavity; the first telescopic cavity is arranged in the fixed cavity, and the second telescopic cavity is arranged in the first telescopic cavity. The first telescopic cavity and the second telescopic cavity can be telescopically moved along the length direction of the fixed cavity.

4. The adjustable support structure for the arch mounting trolley according to claim 3, characterized in that: The outrigger comprises an outrigger mounting seat, an outrigger seat plate, a rib plate, an outrigger oil cylinder, an outrigger lower fixed plate, an outrigger lower movable plate, and an outrigger seat; the outrigger seat plate is fixed at the end of the second telescopic cavity.

5. The adjustable support structure for the arch mounting trolley according to claim 4, characterized in that: A leg mounting seat is arranged above the leg seat plate, and a lower leg fixing plate is arranged below the leg seat plate. A rib plate is arranged between the leg mounting seat and the lower leg fixing plate. The lower leg movable plate is connected to the lower leg fixing plate by bolts. The leg oil cylinder is fixed to the leg mounting seat by bolts above and fixed between the lower leg fixing plate and the lower leg movable plate below. The leg seat is installed below the leg oil cylinder.

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