A sliding platform moving mechanism and dark excavation trolley

Abstract

The present invention discloses a sliding table moving mechanism and a concealed excavation trolley. The sliding table moving mechanism includes a base, a driving mechanism and a sliding table. An outer slideway and a middle slideway are provided on the base. A front end plate and a rear end plate are provided at both ends of the base respectively. The sliding table reciprocates on the outer slideway. The driving mechanism includes a movable pulley block and a power oil cylinder. The movable pulley block includes a front movable pulley, a rear movable pulley, a forward steel wire rope and a backward steel wire rope. The cylinder rod end of the power oil cylinder is fixed on the rear end plate, the rear movable pulley is fixed on the side of the cylinder body close to the cylinder rod, and the front movable pulley is placed on the middle slideway. One end of the forward steel wire rope is fixed on the sliding table, and the other end is fixed on the rear end plate by passing the front movable pulley. One end of the backward steel wire rope is fixed on the front end plate, and the other end is fixed on the sliding table by passing the rear movable pulley. The above structure can increase the stroke of the sliding table, so that the sliding table slides smoothly and has good reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a sliding table moving mechanism and a dark excavation trolley. Background Art

[0002] In subway tunnel construction, due to the narrow construction section space, the requirements for mechanized construction are high. In addition to the equipment size meeting the requirements of narrow space construction, it is also necessary to reduce the number of equipment types required in the process as much as possible on the basis of meeting the requirements of the construction process, so as to avoid extending the construction time and increasing the construction risk due to the replacement of process equipment. Therefore, one machine with multiple functions has gradually become the first choice for subway tunnel construction. The equipment can achieve this function by adding a working arm. At present, most of the equipment used in subway tunnel construction is single-function equipment, that is, the equipment only has the ability to use one working device or machine. Another part is to achieve one machine with multiple functions. The equipment can achieve this function by adding a working arm; in order to avoid interference problems when multiple working arms are constructed in a narrow space, interference is generally avoided by designing a movable platform (i.e., a slide) to drive the non-working working arm to shift. In order to realize the movement of this slide, the existing technology mainly includes installing a motor (or motor) on the slide to drive the gear to move along a linear rack, and the oil cylinder directly drives the slide to move. The method in which the oil cylinder directly drives the slide to move has a simple structure, but due to the limitations of the oil cylinder stroke and installation distance, it requires a large installation space and cannot meet the needs of larger stroke slide movement; the form in which a motor (or electric motor) is installed on the slide to drive the gear to move along a linear rack has high requirements for the processing of the gear rack, and the installation of the motor (or electric motor) still requires a large space for installation, and it has the disadvantage of being difficult to replace the gear rack after it is damaged. Summary of the invention

[0003] The purpose of the present invention is to provide a slide moving mechanism and a concealed excavation trolley, which provide power for the movement of the slide, can meet the requirements of a larger moving stroke of the slide, and are simple to install and replace, reduce labor intensity, and improve work efficiency.

[0004] To achieve the above-mentioned purpose, a slide moving mechanism of the present invention comprises a base, a driving mechanism, and a slide. The base is a long strip-shaped cavity, and is provided with an outer slideway and a middle slideway along the length direction. The two ends of the base are respectively provided with a front end plate and a rear end plate, and the slideway reciprocates on the outer slideway; the driving mechanism is located in the middle slideway, and comprises a movable pulley group and a power cylinder, and the power cylinder comprises a cylinder rod and a cylinder body; the movable pulley group comprises a front movable pulley, a rear movable pulley, a forward wire rope and a backward wire rope, and the One end of the cylinder rod is fixed on the rear end plate, and the other end extends into the cylinder body; the rear end movable pulley is fixed on one end of the cylinder body close to the cylinder rod, and the front end movable pulley is placed on the middle slideway and fixedly connected to the other end of the cylinder body; one end of the forward steel wire rope is fixed on the slideway, and the other end passes through the front end movable pulley and is fixed on the rear end plate, and extends out through the cylinder body to drive the slideway forward on the outer slideway; one end of the backward steel wire rope is fixed on the front end plate, and the other end passes through the rear end movable pulley and is fixed on the slideway, and the slideway is driven backward by the retraction of the cylinder body.

[0005] Furthermore, outer sliding blocks are arranged on both sides of the bottom end of the slide, and the outer sliding blocks are clamped on the outer slideways; and a middle sliding block is arranged on the front movable pulley, and the middle sliding block is clamped on the middle slideway.

[0006] Furthermore, the power cylinder also includes a steel pipe; the cylinder rod is a hollow structure, and the steel pipe passes through the inside of the cylinder rod to supply oil to the rodless cavity of the cylinder body; the hollow structure of the cylinder rod supplies oil to the rod cavity of the cylinder body; two oil inlets are arranged at the end of the cylinder rod.

[0007] Furthermore, the driving mechanism also includes a connecting rod, and the front movable pulley is fixedly connected to the cylinder body through the connecting rod; the connecting rod includes an extension tube and a threaded rod, the extension tube and the threaded rod are connected by threads, one end of the extension tube is fixedly connected to the cylinder body, and one end of the threaded rod is fixedly connected to the front movable pulley.

[0008] Furthermore, the thread is a trapezoidal thread.

[0009] Furthermore, it also includes a limit block, which is arranged on the cylinder body and fixedly connected to the cylinder body. The limit block is clamped in the middle slide and can slide back and forth along the middle slide.

[0010] The present invention also provides a dark excavation trolley, comprising a traveling mechanism and a frame, wherein the frame is arranged on the traveling mechanism, and further comprising the above-mentioned slide moving mechanism, wherein the slide moving mechanism is fixedly arranged on the frame.

[0011] The beneficial effects of the present invention are as follows: by cooperating with the power cylinder and the front movable pulley and the rear movable pulley, the travel of the slide on the outer slideway can be lengthened, its operation mode is more reasonable, the forward and backward freedom is large, and the internal equipment is easy to install and disassemble and easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of the base;

[0014] Figure 3 is a cross-sectional view of the base;

[0015] Figure 4 is a cross-sectional view of the telescopic arm;

[0016] Figure 5 It is a cross-sectional view of the power cylinder;

[0017] Figure 6 It is the position relationship diagram between the movable pulley assembly and the power cylinder;

[0018] Figure 7 yes Figure 5 Left view of

[0019] In the figure, 1-base, 11-outer slide, 12-middle slide, 13-front end plate, 14-rear end plate, 2-slide, 3-front end movable pulley, 4-rear end movable pulley, 5-forward wire rope, 6-reverse wire rope, 7-power cylinder, 71-cylinder rod, 72-cylinder body, 73-steel pipe, 8-extension pipe, 9-threaded rod, 10-limit block. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-3 As shown, a slide moving mechanism includes a base 1, a driving mechanism, and a slide 2. The base is a long strip-shaped cavity. The base is provided with an outer slide 11 and a middle slide 12 along the length direction. A front end plate 13 and a rear end plate 14 are respectively provided at both ends of the base 1. The slide 2 slides back and forth on the outer slide 11.

[0022] The driving mechanism is located in the middle slideway 12, including a movable pulley group and a power cylinder 7, and the power cylinder 7 includes a cylinder rod 71 and a cylinder body 72. The movable pulley group includes a front movable pulley 3, a rear movable pulley 4, a forward wire rope 5 and a backward wire rope 6, and the front movable pulley 3 and the rear movable pulley 4 are both installed through a mounting plate. The head of the cylinder rod 71 of the power cylinder 7 is fixed on the rear end plate 14, and the rear movable pulley 4 is fixed on the side of the cylinder body 72 close to the cylinder rod 71, and moves synchronously with the cylinder body 72. The front movable pulley 3 is placed on the middle slideway 12 and is fixedly connected to the tail of the cylinder body of the power cylinder 7. One end of the forward wire rope 5 is fixed on the slide 2, and the other end bypasses the front movable pulley 3 and is fixed on the rear end plate 14, and extends through the cylinder body of the power cylinder 7 to drive the slide 2 to move forward on the outer slideway 11. One end of the backward steel wire rope 6 is fixed on the front plate 13, and the other end is passed around the rear movable pulley 4 and fixed on the slide 2, and the slide 2 is driven backward by the cylinder body retraction. The direction here is that the front movable pulley 3 is the front, and the rear movable pulley 4 is the rear. The power cylinder 7 is installed in reverse, with the cylinder rod at the rear and the cylinder body at the front.

[0023] The forward steel wire rope 5 and the front movable pulley 3 form a movable pulley mechanism, which is used for the forward power of the slide 2. The power cylinder 7 provides power, which can produce a slide movement distance twice the cylinder stroke; the backward steel wire rope 6 and the rear movable pulley 4 form a movable pulley mechanism, which is used for the backward power of the slide 2. The power cylinder 7 provides power, which can produce a slide movement distance twice the cylinder stroke.

[0024] like Figure 4 As shown, the power oil cylinder 7 also includes a steel pipe 73. The cylinder rod 71 is a hollow structure. The steel pipe 73 passes through the inside of the cylinder rod 71 to supply oil to the rodless cavity of the cylinder body 72. The hollow structure of the cylinder rod 71 supplies oil to the rod cavity of the cylinder body 72. Two oil inlets are set at the head of the cylinder rod 71. An oil outlet is set on the wall of the cylinder rod 71, which can transport the oil in the cylinder rod 71 to the rod cavity of the cylinder body 72. A round hole is opened at the tail end of the cylinder rod 71, and the steel pipe 73 passes through the round hole to supply oil to the rodless cavity of the cylinder body 72. The above-mentioned cylinder rod 71 is fixed and the cylinder body 72 moves relative to the cylinder rod 71. The structural mode is to facilitate the installation of the front movable pulley 3 and the rear movable pulley 4, so that the structural layout of the power oil cylinder 7 and the movable pulley assembly is more reasonable. In addition, the hollow structure of the cylinder rod 71 and the internal steel pipe supply are very different from the oil supply mode of ordinary oil cylinders, which is an innovation of the cylinder movement mode.

[0025] Furthermore, outer sliders are provided on both sides of the bottom of the slide 2, and the outer sliders are clamped on the outer slideway 11. A middle slider is provided on the front movable pulley 3, and the middle slider is clamped on the middle slideway 12. Figure 3 As shown, the cross-sections of the outer slideway 11 and the inner slideway 12 are V-shaped, so the shapes of the outer slider and the middle slider in the slideway are also V-shaped structures.

[0026] The driving mechanism also includes a connecting rod, which includes an extension tube 8 and a threaded rod 9. The extension tube 8 and the threaded rod 9 are connected by threads. One end of the extension tube 8 is fixedly connected to the cylinder body of the power oil cylinder 7, and one end of the threaded rod 9 is movably connected to the front movable pulley 3. Due to different construction conditions, there are different requirements for the maximum stroke of the slide. Some require a shorter slide stroke for more convenient operation, and some require a longer slide stroke for more convenient operation. Here, the role of the connecting rod is to make the maximum stroke of the slide adjustable, that is, to achieve the stroke limit of the slide 2. When the maximum stroke needs to be shortened, the extension tube and the threaded rod are rotated to make the connecting rod longer overall. At this time, the head of the front movable pulley will first contact the front end plate when moving forward, thereby shortening the stroke of the slide. When the stroke of the slide needs to be lengthened, the same principle is used to shorten the connecting rod overall through the cooperation of the extension tube and the threaded rod, so that the stroke of the slide can be lengthened. When the maximum stroke is fixed, it is locked and fixed by the nut between the extension tube and the threaded rod. In addition, an extension tube 8 and a threaded rod 9 are provided to tension the advancing steel wire rope 5 .

[0027] Preferably, the external thread on the threaded rod is a trapezoidal thread, which increases the bearing capacity and increases the stroke per rotation faster.

[0028] like Figure 7 As shown, the slide moving structure also includes a limit block 10, which is arranged on the cylinder body of the power oil cylinder 7 and is fixedly connected to the cylinder body. The limit block 10 is in the shape of a trapezoid, and its lower two corners are clamped in the middle slideway 12 and can slide back and forth along the middle slideway. The top of the figure is a mounting block for mounting the rear end movable pulley. The purpose of setting the limit block 10 is to prevent the cylinder body of the actuator oil cylinder from twisting during the forward and backward reciprocating motion, resulting in damage to the oil cylinder.

[0029] The invention also discloses a dark excavation trolley, comprising a traveling mechanism and a frame, wherein the frame is arranged on the traveling mechanism, and further comprising the above-mentioned slide moving mechanism, wherein the slide moving mechanism is fixedly arranged on one side of the frame.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Various changes that can be made within the knowledge scope of technicians in the relevant technical field without departing from the spirit of the present invention are all within the protection scope of the claims of the present invention.

Claims

1. A sliding table moving mechanism, characterized in that: The invention comprises a base (1), a driving mechanism and a slide (2); the base (1) is a long strip-shaped cavity, and is provided with an outer slideway (11) and a middle slideway (12) along the length direction; a front end plate (13) and a rear end plate (14) are respectively provided at both ends of the base (1); the slide (2) slides back and forth on the outer slideway (11); the driving mechanism is located in the middle slideway (12), and comprises a movable pulley group and a power cylinder (7); the power cylinder (7) comprises a cylinder rod (71) and a cylinder body (72); the movable pulley group comprises a front movable pulley (3), a rear movable pulley (4), a forward steel wire rope (5) and a backward steel wire rope (6); one end of the cylinder rod (71) is fixed to the rear end plate ( 14), and the other end extends into the cylinder body (72); the rear end movable pulley (4) is fixed to one end of the cylinder body (72) close to the cylinder rod (71), the front end movable pulley (3) is placed on the middle slideway (12), and is fixedly connected to the other end of the cylinder body (72); one end of the forward wire rope (5) is fixed to the slideway (2), and the other end passes around the front end movable pulley (3) and is fixed to the rear end plate (14), and extends through the cylinder body (72) to drive the slideway (2) forward on the outer slideway (11); one end of the backward wire rope (6) is fixed to the front end plate (13), and the other end passes around the rear end movable pulley (4) and is fixed to the slideway (2), and retracts through the cylinder body (72) to drive the slideway (2) backward; Outer sliding blocks are arranged on both sides of the bottom end of the slide table (2), and the outer sliding blocks are clamped on the outer sliding tracks (11); a middle sliding block is arranged on the front movable pulley (3), and the middle sliding block is clamped on the middle sliding track (12); The power oil cylinder (7) further comprises a steel pipe (73); the cylinder rod (71) is a hollow structure, the steel pipe (73) passes through the inside of the cylinder rod (71) to supply oil to the rodless cavity of the cylinder body (72); the hollow structure of the cylinder rod (71) supplies oil to the rod cavity of the cylinder body (72); two oil inlets are arranged at the end of the cylinder rod (71); The driving mechanism further comprises a connecting rod, through which the front movable pulley (3) is fixedly connected to the cylinder body (72); the connecting rod comprises an extension tube (8) and a threaded rod (9), the extension tube (8) and the threaded rod (9) are connected by threads, one end of the extension tube (8) is fixedly connected to the cylinder body (72), and one end of the threaded rod (9) is fixedly connected to the front movable pulley (3); It also comprises a limit block (10), which is arranged on the cylinder body (72) and fixedly connected to the cylinder body (72); the limit block (10) is clamped in the middle slideway (12) and can slide back and forth along the middle slideway (12).

2. A dark excavation trolley, characterized in that: It includes a traveling mechanism and a frame, wherein the frame is arranged on the traveling mechanism, and also includes the slide moving mechanism as claimed in claim 1, wherein the slide moving mechanism is fixedly arranged on the frame.

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