A tripod structure of a variable amplitude mechanism

Abstract

The utility model discloses a tripod structure of a variable amplitude mechanism, belonging to the technical field of rotary drilling rigs. The utility model includes a box body, the box body is provided with two groups, a screw rod is connected through the two groups of the box bodies, an auxiliary support plate is provided at the middle position of the screw rod, a mounting frame is provided inside the two groups of the box bodies, a blocking component and a limiting component are provided inside the mounting frame, a nut is threadedly connected to one end of the screw rod, and the nut is fixedly installed on the outer wall of the box body, the blocking component includes a push plate, one side of the push plate extends to the inside of the mounting frame through a connecting rod and is connected to a moving plate, and extrusion rods are provided below the two ends of the moving plate. The utility model fixes the two groups of the box bodies in a detachable manner by the screw rod and nut provided, which is convenient for disassembly and replacement, the blocking component provided can limit the screw rod to prevent the screw rod from rotating due to vibration, and the limiting component provided can limit the moving plate to facilitate personnel to rotate the screw rod.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a tripod structure of a variable amplitude mechanism. Background Art

[0002] The rotary drilling rig is a common construction machine for drilling and grouting in foundation construction, and the tripod of the luffing mechanism is an important part of the rotary drilling rig. Since the tripod is connected to various connecting rods and cylinders of the luffing mechanism, the working conditions are extremely harsh, causing the component to bear more complex heavy loads, and there is a tendency to deform and produce fatigue cracks.

[0003] At present, most of the tripods of the luffing mechanism of rotary drilling rigs at home and abroad generally have four hinge points. The welding mechanism of the tripod is a simple box-shaped structure connected by welding. When the tripod needs to be disassembled and installed, it cannot be disassembled effectively and the welding points need to be cut and destroyed before the tripod can be separated. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a tripod structure of a variable amplitude mechanism, which connects two sets of boxes by means of screws and nuts to solve the above-mentioned technical solution that cannot be disassembled.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model provides a tripod structure of a variable amplitude mechanism, including: a box body, the box body is provided with two groups, a screw is connected through the two groups of box bodies, an auxiliary support plate is provided at the middle position of the screw, a mounting frame is provided inside the two groups of box bodies, a blocking assembly and a limiting assembly are provided inside the mounting frame, a nut is threadedly connected to one end of the screw, and the nut is fixedly installed on the outer wall of the box body, the blocking assembly includes a push plate, one side of the push plate extends to the inside of the mounting frame through a connecting rod and is connected to a moving plate, extrusion rods are provided below both ends of the moving plate, a moving rod is provided below the extrusion rod, a limiting tooth is provided on one side of the moving rod, a gear ring is provided on one side of the limiting tooth, and the gear ring is fixedly installed on the outer wall of the screw.

[0006] Preferably, the movable plate is fixedly connected to the extrusion rod, an inclined groove is provided at one end of the movable rod, and the extrusion rod is movably installed inside the inclined groove.

[0007] Preferably, one end of the moving rod extends to the outer wall of the installation frame and is connected to the limiting tooth, the limiting tooth is fixedly connected to the gear ring, and the other end of the moving rod is provided with a spring.

[0008] Preferably, the limiting assembly comprises a mounting cylinder, a clamping block is arranged inside the mounting cylinder, a fixing cylinder is arranged below the mounting cylinder, an extrusion ring is arranged inside the fixing cylinder, a moving ring is arranged below the extrusion ring, and a fixing ring is arranged below the moving ring.

[0009] Preferably, the extrusion ring is fixedly mounted on the top of the fixed column, the bottom of the fixed column is fixedly mounted on the inner wall of the fixed cylinder, the fixed cylinder is fixedly mounted inside the mounting frame, and the mounting cylinder is fixedly mounted on the lower end of the movable plate.

[0010] Preferably, the moving ring is slidably sleeved on the outer wall of the fixed column, a groove matching the moving ring is provided inside the extrusion ring, and the fixed ring is fixedly installed on the outer wall of the fixed column.

[0011] Preferably, one end of the clamping block is provided with an inclined surface, the other end of the clamping block extends to the inner wall of the mounting tube, and a spring is provided between the inner wall of the mounting tube and the clamping block.

[0012] The beneficial effects of the utility model are:

[0013] The utility model fixes the two sets of box bodies in a detachable manner by means of the provided screw nut, which is convenient for disassembly and replacement. The provided blocking component can limit the screw to prevent the screw from rotating due to vibration. The provided limiting component can limit the movable plate to facilitate the rotation of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic structural diagram of a tripod structure of an amplitude varying mechanism provided in an embodiment of the utility model.

[0016] Figure 2 It is a front sectional view of the utility model.

[0017] Figure 3 It is a partial cross-sectional view of the right side of the utility model.

[0018] Figure 4 It is a top sectional view of the installation frame of the utility model.

[0019] Explanation of the reference numerals: 1-box, 2-screw, 3-auxiliary support plate, 4-installation frame, 5-nut, 610-push plate, 620-moving plate, 630-extrusion rod, 640-moving rod, 650-bevel groove, 660-limiting tooth, 670-gear ring, 710-installation cylinder, 720-fixed cylinder, 730-block, 740-extrusion ring, 750-moving ring, 760-fixed ring, 770-fixed column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1:

[0022] like Figures 1 to 4 As shown, this embodiment provides a tripod structure of a variable amplitude mechanism, including: a box body 1, wherein the box body 1 is provided with two groups, a screw rod 2 is connected through the two groups of box bodies 1, an auxiliary support plate 3 is provided at the middle position of the screw rod 2, an installation frame 4 is provided inside the two groups of box bodies 1, a blocking assembly and a limiting assembly are provided inside the installation frame 4, a nut 5 is threadedly connected to one end of the screw rod 2, and the nut 5 is fixedly installed on the outer wall of the box body 1.

[0023] Principle of this embodiment: the screw 2 and nut 5 are set to fix the two groups of box bodies 1 in a detachable manner, which is convenient for disassembly and replacement; the auxiliary support plate 3 is set to provide auxiliary support for the screw 2; the blocking component is set to limit the screw 2 to prevent the screw 2 from rotating due to vibration; the limiting component is set to limit the movable plate 620 to facilitate the rotation of the screw 2.

[0024] Embodiment 2:

[0025] like Figure 2-4As shown, on the basis of retaining all the technical features in specific embodiment one (or the difference between this embodiment and specific embodiment one is that), in this embodiment: the blocking component includes a push plate 610, one side of the push plate 610 extends to the inside of the installation frame 4 through a connecting rod and is connected to the movable plate 620, an extrusion rod 630 is arranged below both ends of the movable plate 620, a moving rod 640 is arranged below the extrusion rod 630, a limiting tooth 660 is arranged on one side of the moving rod 640, a gear ring 670 is arranged on one side of the limiting tooth 660, the gear ring 670 is fixedly installed on the outer wall of the screw 2, the movable plate 620 is fixedly connected to the extrusion rod 630, one end of the moving rod 640 is provided with an inclined groove 650, the extrusion rod 630 is movably installed in the inclined groove 650, one end of the moving rod 640 extends to the outer wall of the installation frame 4 and is connected to the limiting tooth 660, the limiting tooth 660 is fixedly connected to the gear ring 670, and a spring is arranged at the other end of the moving rod 640.

[0026] The principle of this embodiment is: by pushing the push plate 610 inward, the connecting rod is driven to move inward, thereby driving the movable plate 620 to move inward, and the extrusion rod 630 is driven to move inward through the movable plate 620. The extrusion rod 630 cooperates with the inclined groove 650 to drive the movable rod 640 to move inward, and drives the limit ring to disengage from the gear ring 670, thereby releasing the obstruction to the screw rod 2. Conversely, the limit ring is engaged with the gear ring 670 to block the screw rod 2.

[0027] Embodiment three:

[0028] like Figure 4 As shown, on the basis of retaining all the technical features in the specific embodiment 1 and / or the specific embodiment 2 (or the difference between this embodiment and the specific embodiment 1 and / or the specific embodiment 2 is that), in this embodiment: the limiting assembly includes a mounting cylinder 710, a clamping block 730 is arranged inside the mounting cylinder 710, a fixed cylinder 720 is arranged below the mounting cylinder 710, an extrusion ring 740 is arranged inside the fixed cylinder 720, a moving ring 750 is arranged below the extrusion ring 740, a fixed ring 760 is arranged below the moving ring 750, and the extrusion ring 740 is fixedly installed on the top of the fixed column 770 The bottom end of the fixed column 770 is fixedly installed on the inner wall of the fixed cylinder 720, and the fixed cylinder 720 is fixedly installed inside the installation frame 4, the installation cylinder 710 is fixedly installed at the lower end of the movable plate 620, the movable ring 750 is slidably sleeved on the outer wall of the fixed column 770, and a groove matching the movable ring 750 is opened inside the extrusion ring 740, the fixed ring 760 is fixedly installed on the outer wall of the fixed column 770, one end of the block 730 is provided with an inclined surface, and the other end of the block 730 extends to the inner wall of the installation cylinder 710, and a spring is provided between the inner wall of the installation cylinder 710 and the block 730.

[0029] Principle of this embodiment: when the movable plate 620 moves downward, it drives the installation cylinder 710 to move toward the inside of the fixed cylinder 720. After moving to a certain position, the block 730 retracts inward through the extrusion ring 740, and the installation cylinder 710 continues to move downward. After disengaging from the extrusion ring 740, the block 730 resets and engages with the extrusion ring 740, thereby preventing the limit tooth 660 from resetting. It is impossible for a person to press the push plate 610 for a long time. On the contrary, the push plate 610 continues to be pushed inward, driving the movable plate 620 and the installation cylinder 710 to continue to move inward, thereby the block 730 is squeezed and retracted by the moving circle 750, and resets after being separated from the moving circle 750. The push plate 610 is pushed down, and the spring set at the other end of the moving rod 640 drives the moving plate 620 and the mounting tube 710 to reset. The block 730 drives the moving circle 750 to move upward. When the moving circle 750 moves to the inside of the extrusion circle 740, the block 730 retracts through the inclined surface below the moving circle 750 and separates from the extrusion circle 740 to complete the separation. The parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A tripod structure of a variable amplitude mechanism, characterized in that: include: A box body (1), wherein the box body (1) is provided with two groups, a screw rod (2) is connected through the two groups of the box bodies (1), an auxiliary support plate (3) is provided at the middle of the screw rod (2), a mounting frame (4) is provided inside the two groups of the box bodies (1), a blocking component and a limiting component are provided inside the mounting frame (4), a nut (5) is threadedly connected to one end of the screw rod (2), and the nut (5) is fixedly installed on the outer wall of the box body (1); The blocking assembly comprises a push plate (610), one side of which extends to the interior of the mounting frame (4) through a connecting rod and is connected to a movable plate (620), extrusion rods (630) are arranged below both ends of the movable plate (620), a movable rod (640) is arranged below the extrusion rod (630), a limiting tooth (660) is arranged on one side of the movable rod (640), a gear ring (670) is arranged on one side of the limiting tooth (660), and the gear ring (670) is fixedly mounted on the outer wall of the screw rod (2).

2. A tripod structure of a variable amplitude mechanism according to claim 1, characterized in that: The movable plate (620) is fixedly connected to the extrusion rod (630); an inclined groove (650) is provided at one end of the movable rod (640); and the extrusion rod (630) is movably installed inside the inclined groove (650).

3. The tripod structure of the amplitude variation mechanism according to claim 1, characterized in that: One end of the moving rod (640) extends to the outer wall of the installation frame (4) and is connected to the limiting tooth (660); the limiting tooth (660) is fixedly connected to the gear ring (670); and a spring is provided at the other end of the moving rod (640).

4. The tripod structure of the amplitude variation mechanism according to claim 1, characterized in that: The limiting assembly comprises a mounting cylinder (710), a clamping block (730) is arranged inside the mounting cylinder (710), a fixing cylinder (720) is arranged below the mounting cylinder (710), an extrusion ring (740) is arranged inside the fixing cylinder (720), a moving ring (750) is arranged below the extrusion ring (740), and a fixing ring (760) is arranged below the moving ring (750).

5. The tripod structure of the amplitude varying mechanism according to claim 4, characterized in that: The extrusion ring (740) is fixedly mounted on the top of the fixed column (770), the bottom of the fixed column (770) is fixedly mounted on the inner wall of the fixed cylinder (720), and the fixed cylinder (720) is fixedly mounted inside the mounting frame (4), and the mounting cylinder (710) is fixedly mounted on the lower end of the movable plate (620).

6. The tripod structure of the amplitude varying mechanism according to claim 4, characterized in that: The moving ring (750) is slidably sleeved on the outer wall of the fixed column (770), a groove matching the moving ring (750) is provided inside the extrusion ring (740), and the fixed ring (760) is fixedly mounted on the outer wall of the fixed column (770).

7. The tripod structure of the amplitude variation mechanism according to claim 4, characterized in that: One end of the clamping block (730) is provided with an inclined surface, and the other end of the clamping block (730) extends to the inner wall of the installation tube (710), and a spring is provided between the inner wall of the installation tube (710) and the clamping block (730).

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