Multi-stage lifting supporting device

Abstract

The invention discloses a multi-stage lifting supporting device which comprises a supporting plate with a through hole formed in the center, a supporting outer cylinder connected into the through hole of the supporting plate in a sliding mode, a supporting inner cylinder connected into an inner cavity of the supporting outer cylinder in a sliding mode and a first-stage lifting locking mechanism arranged on the upper plate face of the supporting plate. The second-stage lifting locking mechanism is arranged at the upper end of the supporting outer cylinder; the first-stage lifting locking mechanism comprises a threaded seat, a first-stage clamping seat and a group of first-stage clamping blocks; when the first-stage clamping seat is rotated, the first-stage clamping seat moves up and down relative to the threaded seat, and the circular truncated cone clamping surface of the first-stage clamping seat drives the first-stage clamping blocks to clamp or release the supporting outer cylinder; the second-stage lifting locking mechanism comprises a second-stage clamping seat and a group of second-stage clamping blocks; when the second-stage clamping seat is rotated, the second-stage clamping seat moves up and down relative to the supporting outer cylinder, and the circular truncated cone clamping face of the second-stage clamping seat drives the second-stage clamping blocks to clamp or release the supporting inner cylinder.

Description

Technical Field

[0001] The present invention belongs to the technical field of lifting supports, and in particular relates to a multi-stage lifting support device. Background Art

[0002] In some cases, it is necessary to quickly raise and lower a support to multiple lifting positions at a certain height, and the structure must be safe and reliable. If the lifting height is large and the number of lifting positions is large, the lifting mechanism often takes up a lot of space and is difficult to operate.

[0003] Therefore, a multi-stage centering rapid lifting support device is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage lifting support device.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A multi-stage lifting support device of the present invention comprises a support plate with a through hole in the center, a support outer cylinder slidably connected to the through hole of the support plate, a support inner cylinder slidably connected to the inner cavity of the support outer cylinder, a primary lifting locking mechanism provided on the upper surface of the support plate, and a secondary lifting locking mechanism provided on the upper end of the support outer cylinder;

[0007] The outer wall of the upper end of the supporting outer cylinder is processed with an external thread;

[0008] The first-level lifting and locking mechanism includes a threaded seat, a first-level clamping seat and a set of first-level clamping blocks;

[0009] The threaded seat is a ring-shaped part with a connecting thread processed on the outer wall;

[0010] The first-level clamping seat is a cylindrical structure, the lower end of the inner wall of the first-level clamping seat is processed with an internal thread matching the outer wall of the threaded seat, the middle part of the inner wall of the first-level clamping seat is provided with a group of vertical positioning grooves evenly distributed around the circumference, and the upper end of the inner wall of the first-level clamping seat is processed with an upwardly converging frustum clamping surface;

[0011] The first-level clamping block is a block-shaped piece whose width matches the width of the vertical positioning groove of the first-level clamping seat. The inner side of the first-level clamping block is an arc surface that matches the outer diameter of the supporting outer cylinder. The outer upper end of the first-level clamping block is processed with a truncated cone positioning surface that matches the truncated cone clamping surface of the first-level clamping seat.

[0012] The threaded seat is fixed to the edge of the through hole on the upper surface of the support plate, the lower end of the inner wall of the first-level clamping seat is threadedly connected to the outer side of the threaded seat, and each first-level clamping block is installed in each vertical positioning groove of the first-level clamping seat. When the first-level clamping seat is rotated, the first-level clamping seat moves up and down relative to the threaded seat, and the first-level clamping seat frustum clamping surface drives each first-level clamping block to clamp or release the supporting outer cylinder;

[0013] The secondary lifting and locking mechanism includes a secondary clamping seat and a set of secondary clamping blocks;

[0014] The secondary clamping seat is a cylindrical structure, the lower end of the inner wall of the secondary clamping seat is processed with an internal thread matching the outer wall of the upper end of the supporting outer cylinder, the middle part of the inner wall of the secondary clamping seat is provided with a group of vertical positioning grooves evenly distributed around the circumference, and the upper end of the inner wall of the secondary clamping seat is processed with an upwardly converging frustum clamping surface;

[0015] The secondary clamping block is a block-shaped piece whose width matches the width of the vertical positioning groove of the secondary clamping seat. The inner side of the secondary clamping block is an arc surface that matches the outer diameter of the supporting inner cylinder. The upper end of the outer side of the secondary clamping block is processed with a truncated cone positioning surface that matches the truncated cone clamping surface of the secondary clamping seat.

[0016] The lower end of the inner wall of the secondary clamping seat is threadedly connected to the outer wall of the upper end of the supporting outer cylinder, and each secondary clamping block is installed in each vertical positioning groove of the secondary clamping seat. When the secondary clamping seat is rotated, the secondary clamping seat moves up and down relative to the supporting outer cylinder, and the conical clamping surface of the secondary clamping seat drives each secondary clamping block to clamp or release the supporting inner cylinder.

[0017] The outer walls of the primary clamping seat and the secondary clamping seat are both provided with a rotating handle to facilitate the rotation of the primary clamping seat and the secondary clamping seat.

[0018] The outer walls of the supporting outer cylinder and the supporting inner cylinder are each provided with a group of axially distributed annular positioning platforms, so that the upper ends of each primary clamping block and each secondary clamping block axially support the supporting outer cylinder and the supporting inner cylinder respectively through the annular positioning platforms.

[0019] Working process

[0020] When controlling the lifting and lowering of the supporting outer cylinder, the first-level clamping seat is rotated to move the first-level clamping seat upward relative to the threaded seat, and the first-level clamping seat truncated cone clamping surface moves away from each first-level clamping block, thereby releasing the lock on the supporting outer cylinder; after moving the supporting outer cylinder to a predetermined supporting height, the first-level clamping seat is rotated again to move the first-level clamping seat downward relative to the threaded seat, and the first-level clamping seat truncated cone clamping surface drives each first-level clamping block to clamp the supporting outer cylinder inward, thereby positioning the supporting height of the supporting outer cylinder;

[0021] When controlling the lifting and lowering of the supporting inner cylinder, the secondary clamping seat is rotated to move the secondary clamping seat upward relative to the supporting outer cylinder, and the conical clamping surface of the secondary clamping seat moves away from each secondary clamping block to release the lock on the supporting inner cylinder; after moving the supporting inner cylinder to a predetermined supporting height, the secondary clamping seat is rotated again to move the secondary clamping seat downward relative to the supporting outer cylinder, and the conical clamping surface of the secondary clamping seat drives each secondary clamping block to clamp the supporting inner cylinder inward, thereby positioning the supporting height of the supporting inner cylinder.

[0022] Beneficial effects:

[0023] 1. It can be designed and manufactured with one or more levels of lifting according to the position, quantity and storage space of the determined height, which is convenient and flexible.

[0024] 2. Manual operation is sufficient during the lifting process, which is quick and convenient.

[0025] 3. The clamping block clamps the lifting pipe step, making the structure stable and firm.

[0026] 4. The operation process is simple, just loosen and tighten, reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the multi-stage lifting support device of the present invention;

[0028] Figure 2 This is an appearance diagram of the multi-stage lifting support device of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] Example

[0031] like Figure 1 、 2 As shown, a multi-stage lifting support device of the present invention includes a support plate 3 with a through hole in the center, a support outer cylinder 1 slidably connected to the through hole of the support plate 3, a support inner cylinder 2 slidably connected to the inner cavity of the support outer cylinder 1, a primary lifting locking mechanism provided on the upper surface of the support plate 3, and a secondary lifting locking mechanism provided on the upper end of the support outer cylinder 1;

[0032] The outer walls of the supporting outer cylinder 1 and the supporting inner cylinder 2 are both provided with a set of axially distributed annular positioning platforms, and the outer wall of the upper end of the supporting outer cylinder 1 is processed with an external thread;

[0033] The first-level lifting and locking mechanism includes a threaded seat 4, a first-level clamping seat 5 and a set of first-level clamping blocks 6;

[0034] The threaded seat 4 is a ring-shaped part with a connecting thread processed on the outer wall;

[0035] The first-level clamping seat 5 is a cylindrical structure. The lower end of the inner wall of the first-level clamping seat 5 is processed with an internal thread that matches the outer wall of the threaded seat 4. The middle part of the inner wall of the first-level clamping seat 5 is provided with a group of vertical positioning grooves evenly distributed around the circumference. The upper end of the inner wall of the first-level clamping seat 5 is processed with a frustum clamping surface that converges upwards.

[0036] The first-level clamping block 6 is a block-shaped member whose width matches the width of the vertical positioning groove of the first-level clamping seat 5. The inner side of the first-level clamping block 6 is an arc surface that matches the outer diameter of the supporting outer cylinder 1. The upper end of the outer side of the first-level clamping block 6 is processed with a truncated cone positioning surface that matches the truncated cone clamping surface of the first-level clamping seat 5.

[0037] The threaded seat 4 is fixed to the edge of the through-hole on the upper surface of the support plate 3, and the lower end of the inner wall of the first-level clamping seat 5 is threadedly connected to the outer side of the threaded seat 4. Each first-level clamping block 6 is installed in each vertical positioning groove of the first-level clamping seat 5. When the first-level clamping seat 5 is rotated, the first-level clamping seat 5 moves up and down relative to the threaded seat 4, and the cone clamping surface of the first-level clamping seat 5 drives each first-level clamping block 6 to clamp or release the supporting outer cylinder 1;

[0038] The secondary lifting and locking mechanism includes a secondary clamping seat 7 and a set of secondary clamping blocks 8;

[0039] The secondary clamping seat 7 is a cylindrical structure. The lower end of the inner wall of the secondary clamping seat 7 is processed with an internal thread that matches the outer wall of the upper end of the supporting outer cylinder 1. The middle part of the inner wall of the secondary clamping seat 7 is provided with a group of vertical positioning grooves evenly distributed around the circumference. The upper end of the inner wall of the secondary clamping seat 7 is processed with an upwardly converging frustum clamping surface.

[0040] The secondary clamping block 8 is a block-shaped member whose width matches the width of the vertical positioning groove of the secondary clamping seat 7. The inner side of the secondary clamping block 8 is an arc surface that matches the outer diameter of the supporting inner cylinder 2. The upper end of the outer side of the secondary clamping block 8 is processed with a truncated cone positioning surface that matches the truncated cone clamping surface of the secondary clamping seat 7.

[0041] The lower end of the inner wall of the secondary clamping seat 7 is threadedly connected to the outer wall of the upper end of the supporting outer cylinder 1, and each secondary clamping block 8 is installed in each vertical positioning groove of the secondary clamping seat 7. When the secondary clamping seat 7 is rotated, the secondary clamping seat 7 moves up and down relative to the supporting outer cylinder 1, and the conical clamping surface of the secondary clamping seat 7 drives each secondary clamping block 8 to clamp or release the supporting inner cylinder 2.

[0042] The outer walls of the primary clamping seat 5 and the secondary clamping seat 7 are both provided with rotating handles to facilitate the rotation of the primary clamping seat 5 and the secondary clamping seat 7.

[0043] Working process

[0044] When controlling the lifting and lowering of the supporting outer cylinder 1, the first-level clamping seat 5 is rotated to move the first-level clamping seat 5 upward relative to the threaded seat 4, and the cone clamping surface of the first-level clamping seat 5 moves away from each first-level clamping block 6, thereby releasing the lock on the supporting outer cylinder 1; after moving the supporting outer cylinder 1 to a predetermined supporting height, the first-level clamping seat 5 is rotated again to move the first-level clamping seat 5 downward relative to the threaded seat 4, and the cone clamping surface of the first-level clamping seat 5 drives each first-level clamping block 6 to clamp the supporting outer cylinder 1 inward, thereby positioning the supporting height of the supporting outer cylinder 1;

[0045] When controlling the lifting and lowering of the supporting inner cylinder 2, the secondary clamping seat 7 is rotated to move the secondary clamping seat 7 upward relative to the supporting outer cylinder 1, and the conical clamping surface of the secondary clamping seat 7 moves away from each secondary clamping block 8, thereby releasing the lock on the supporting inner cylinder 2; after moving the supporting inner cylinder 2 to a predetermined supporting height, the secondary clamping seat 7 is rotated again to move the secondary clamping seat 7 downward relative to the supporting outer cylinder 1, and the conical clamping surface of the secondary clamping seat 7 drives each secondary clamping block 8 to clamp the supporting inner cylinder 2 inward, thereby positioning the supporting height of the supporting inner cylinder 2.

Claims

1. A multi-stage lifting support device, characterized in that: It includes a support plate with a through hole in the center, a support outer cylinder slidably connected to the through hole of the support plate, a support inner cylinder slidably connected to the inner cavity of the support outer cylinder, a primary lifting and locking mechanism provided on the upper surface of the support plate, and a secondary lifting and locking mechanism provided on the upper end of the support outer cylinder; The outer wall of the upper end of the supporting outer cylinder is processed with an external thread; The first-level lifting and locking mechanism includes a threaded seat, a first-level clamping seat and a set of first-level clamping blocks; The threaded seat is a ring-shaped part with a connecting thread processed on the outer wall; The first-level clamping seat is a cylindrical structure, the lower end of the inner wall of the first-level clamping seat is processed with an internal thread matching the outer wall of the threaded seat, the middle part of the inner wall of the first-level clamping seat is provided with a group of vertical positioning grooves evenly distributed around the circumference, and the upper end of the inner wall of the first-level clamping seat is processed with an upwardly converging frustum clamping surface; The first-level clamping block is a block-shaped piece whose width matches the width of the vertical positioning groove of the first-level clamping seat. The inner side of the first-level clamping block is an arc surface that matches the outer diameter of the supporting outer cylinder. The outer upper end of the first-level clamping block is processed with a truncated cone positioning surface that matches the truncated cone clamping surface of the first-level clamping seat. The threaded seat is fixed to the edge of the through hole on the upper surface of the support plate, the lower end of the inner wall of the first-level clamping seat is threadedly connected to the outer side of the threaded seat, and each first-level clamping block is installed in each vertical positioning groove of the first-level clamping seat. When the first-level clamping seat is rotated, the first-level clamping seat moves up and down relative to the threaded seat, and the first-level clamping seat frustum clamping surface drives each first-level clamping block to clamp or release the supporting outer cylinder; The secondary lifting and locking mechanism includes a secondary clamping seat and a set of secondary clamping blocks; The secondary clamping seat is a cylindrical structure, the lower end of the inner wall of the secondary clamping seat is processed with an internal thread matching the outer wall of the upper end of the supporting outer cylinder, the middle part of the inner wall of the secondary clamping seat is provided with a group of vertical positioning grooves evenly distributed around the circumference, and the upper end of the inner wall of the secondary clamping seat is processed with an upwardly converging frustum clamping surface; The secondary clamping block is a block-shaped piece whose width matches the width of the vertical positioning groove of the secondary clamping seat. The inner side of the secondary clamping block is an arc surface that matches the outer diameter of the supporting inner cylinder. The upper end of the outer side of the secondary clamping block is processed with a truncated cone positioning surface that matches the truncated cone clamping surface of the secondary clamping seat. The lower end of the inner wall of the secondary clamping seat is threadedly connected to the outer wall of the upper end of the supporting outer cylinder, and each secondary clamping block is installed in each vertical positioning groove of the secondary clamping seat. When the secondary clamping seat is rotated, the secondary clamping seat moves up and down relative to the supporting outer cylinder, and the conical clamping surface of the secondary clamping seat drives each secondary clamping block to clamp or release the supporting inner cylinder.

2. A multi-stage lifting support device according to claim 1, characterized in that: The outer walls of the primary clamping seat and the secondary clamping seat are both provided with rotating handles.

3. A multi-stage lifting support device according to claim 1 or 2, characterized in that: The outer walls of the supporting outer cylinder and the supporting inner cylinder are each provided with a group of axially distributed annular positioning platforms, so that the upper ends of each primary clamping block and each secondary clamping block axially support the supporting outer cylinder and the supporting inner cylinder respectively through the annular positioning platforms.

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