Telescopic adjusting mechanism and telescopic device

Abstract

The utility model relates to the field of transmission devices, and provides a telescopic adjusting mechanism and a telescopic device, the telescopic adjusting mechanism comprises a base, a transmission piece and a worm and gear lifting machine, one end of a screw rod in the worm and gear lifting machine is connected with the base, and the other end of the screw rod penetrates through the transmission piece and then is meshed with a worm and gear in a spiral mode; the worm gear and the worm are fixedly connected with the transmission piece through a connecting block; a first connecting plate and a second connecting plate are arranged on the base and located on the two sides of the worm and gear elevator, and the first connecting plate and the second connecting plate are oppositely arranged. The first connecting plate and the second connecting plate are provided with a first guide groove and a second guide groove respectively, and the transmission piece is connected with the first guide groove and the second guide groove in a sliding mode. According to the utility model, the worm and gear elevator is adopted as a driving mechanism, so that the installation space is smaller, and the device is more suitable for subway tunnel construction environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of transmission device, more particularly, a telescopic adjusting mechanism and telescopic device. BACKGROUND

[0002] Telescopic device refers to the mechanism that can change its length, size and shape, in the mechanical field, telescopic adjusting mechanism is a structure that can stretch or contract, its key lies in the length change of some parts in the structure, can realize horizontal telescopic, vertical telescopic, bending telescopic etc, generally horizontal telescopic is more widely used. The market generally uses the collocation mode of electric cylinder module to realize, the movement of the slider on the electric cylinder module is realized through the control of the controller to realize the displacement change of the component, and the telescopic adjustment is completed.

[0003] However, when the electric cylinder module is applied to the subway tunnel base plate smoothing device as telescopic device, a large volume electric cylinder module is needed, its installation occupies a large space, and a corresponding control system is also needed to drive the movement of the electric cylinder module. In the subway tunnel base plate smoothing construction environment, the installation space of the equipment is limited, so a telescopic adjusting mechanism with smaller installation space is needed. UTILITY MODEL CONTENTS

[0004] The utility model provides a telescopic adjusting mechanism and telescopic device to overcome the defects of the prior art telescopic device that occupies a large installation space, and is suitable for the subway tunnel base plate smoothing construction environment.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] A telescopic adjusting mechanism, comprising a base, a transmission part and a worm gear elevator, wherein one end of a lead screw in the worm gear elevator is connected with the base, the other end of the lead screw is screw-engaged with the worm gear after penetrating through the transmission part, the worm gear is connected and fixed with the transmission part through a connecting block, first and second connecting plates are arranged on the base and on both sides of the worm gear elevator, the first connecting plate is oppositely arranged with the second connecting plate, first and second guide grooves are respectively arranged on the first and second connecting plates, and the transmission part is slidingly connected with the first and second guide grooves.

[0007] In the technical scheme, the worm gear elevator is used as a driving mechanism to drive the transmission part to move along the connecting plate direction, realizing telescopic adjustment. The first and second connecting plates act as guide mechanisms to guide the telescopic adjustment of the transmission part, and support the transmission part to avoid deformation of the overall structure during operation.

[0008] Preferably, a spacer is arranged between the transmission member and the first connecting plate, and the transmission member is slidably connected to the first guide groove through the spacer.

[0009] Preferably, a steel wheel is arranged on the transmission member, the width of the second guide groove matches the steel wheel, and the transmission member is slidably connected to the second guide groove through the steel wheel.

[0010] Preferably, the second connecting plate is an L-shaped connecting plate, and a reinforcing rib is arranged on the second connecting plate.

[0011] Preferably, a guide shaft is further arranged on the base, one end of the guide shaft is fixed to the base, and the other end of the guide shaft passes through the transmission member.

[0012] Preferably, a first bearing is arranged on the transmission member at a position where the transmission member is connected to the guide shaft, one end of the guide shaft passes through the base and is connected to a shaft clamp, and a second bearing is arranged on the base at a position where the guide shaft is connected to the base.

[0013] Preferably, the worm gear elevator is connected to a hand lever.

[0014] Preferably, a square steel is arranged on one side of the base.

[0015] Preferably, a plurality of lifting rings are arranged on the base and / or the transmission member.

[0016] Further, the utility model also proposes a telescopic adjusting device, which comprises the telescopic adjusting mechanism arranged oppositely and the connecting rod assembly arranged in a sleeve, and the two ends of the connecting rod assembly are connected to the transmission members in the telescopic adjusting mechanism arranged oppositely.

[0017] Compared with the prior art, the utility model technical scheme has the beneficial effects that:

[0018] The worm gear elevator is adopted as the driving mechanism, the transmission member is driven to move along the connecting plate, and telescopic adjustment is realized; compared with the conventional electric cylinder module, the worm gear elevator is smaller in size, occupies smaller installation space, and is more suitable for the subway tunnel construction environment; the first connecting plate and the second connecting plate are adopted as the guide mechanism to guide the telescopic movement of the transmission member and support the transmission member, so that the deformation of the overall structure in operation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic view of a telescopic adjusting mechanism according to an embodiment of the utility model.

[0020] Figure 2Another structural schematic view of the telescopic adjusting mechanism according to an embodiment of the utility model.

[0021] Figure 3 Another structural schematic view of the telescopic adjusting mechanism according to an embodiment of the utility model.

[0022] Figure 4 The structural schematic view of the telescopic adjusting device according to an embodiment of the utility model.

[0023] Wherein, 1 - base, 101 - second bearing, 2 - transmission part, 201 - first bearing, 3 - worm gear elevator, 301 - screw rod, 302 - worm gear, 303 - connecting block, 4 - first connecting plate, 401 - first guide slot, 5 - second connecting plate, 501 - second guide slot, 6 - cushion block, 7 - steel wheel, 8 - guide shaft, 801 - shaft clamp, 9 - connecting square steel, 10 - lifting ring, 11 - connecting rod assembly. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0025] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0028] The utility model will be described in detail below in combination with the drawings and specific embodiments.

[0029] Embodiment 1

[0030] The embodiment provides a telescopic adjusting mechanism, as shown in the structural schematic diagram of the telescopic adjusting mechanism of the embodiment. Figure 1 The telescopic adjusting mechanism provided by the embodiment comprises a base 1, a transmission member 2 and a worm gear elevator 3.

[0031] The worm gear elevator 3 is connected with the base 1 at one end of a screw rod 301, and the other end of the screw rod 301 is screw-engaged with a worm gear 302 after penetrating through the transmission member 2; the worm gear 302 is connected and fixed with the transmission member 2 through a connecting block 303; first and second connecting plates 4 and 5 are arranged on the base 1 and on both sides of the worm gear elevator 3, and the first connecting plate 4 is arranged opposite to the second connecting plate 5; first and second guide grooves 401 and 501 are respectively arranged on the first and second connecting plates 4 and 5, and the transmission member 2 is slidingly connected with the first and second guide grooves 401 and 501.

[0032] In the specific implementation process, the base 1 is placed on a plane, and the motor is started to drive the worm gear 302 to rotate, and the worm gear moves along the screw rod 301 in the axial direction under the rotation of the worm gear; the worm gear 302 is connected and fixed with the transmission member 2 through the connecting block 303, and when the worm gear 302 rotates, the transmission member 2 moves along the screw rod 301 in the axial direction under the driving of the worm gear 302, so that telescopic adjustment is realized.

[0033] The worm gear elevator 3 is a basic lifting component, which mainly comprises a motor, a speed reducer, a worm gear 302, a screw rod 301 and a nut. The worm gear 302 converts the rotary motion of the motor into linear motion through mutual engagement to drive the transmission member 2 to lift. Specifically, when the motor is started, the speed reducer converts the high-speed rotation of the motor into low-speed rotation of the worm. The rotation of the worm drives the rotation of the worm gear, and drives the transmission member 2 to move up and down along the screw rod 301. Since the screw rod 301 and the worm nut have the same pitch, the position of the lifting platform is raised or lowered by one pitch distance every rotation. By changing the rotation direction of the motor, the direction of the lifting platform movement is controlled, so that accurate lifting and stopping are realized.

[0034] In this embodiment, the worm gear lift 3 is used as the driving mechanism to realize the telescopic adjustment, and the self-locking and anti-rotation functions of the worm gear lift 3 can avoid the movement of the transmission member 2 after telescopic adjustment. Compared with the conventional electric cylinder module, the worm gear lift 3 has smaller size and occupies smaller installation space, and is more suitable for the subway tunnel construction environment. In addition, the first connecting plate 4 and the second connecting plate 5 in this embodiment act as a guide mechanism to guide the telescopic adjustment of the transmission member 2, and also support the transmission member 2 to avoid deformation of the overall structure during operation.

[0035] In the specific implementation process, the transmission member 2 and the base 1 can be designed in different structures according to the use requirements.

[0036] For example, the transmission member 2 in this embodiment uses square steel, and the base 1 uses a beam frame.

[0037] In an optional embodiment, the tail of the worm gear lift is fixed to the base 1 by screws to enhance the stability of the mechanism and avoid loosening of the worm gear lift.

[0038] In an optional embodiment, the worm gear lift 3 is connected with a hand lever, which is used to replace the motor driving the worm rotation by hand shaking the hand lever in the absence of driving power supply.

[0039] In an optional embodiment, the base 1 is provided with a connecting square steel 9 on one side, which is used to fit and assemble with other devices.

[0040] In an optional embodiment, the telescopic adjustment mechanism is installed with the first connecting plate 4 and the second connecting plate 5 as the center of symmetry of the worm gear lift to improve the stability of the mechanism.

[0041] In an optional embodiment, the base 1 and / or the transmission member 2 are provided with a plurality of lifting rings 10 for lifting when used in large devices.

[0042] In this embodiment, all components are installed as much as possible using long screws in cooperation with locking nuts to prevent loosening of parts.

[0043] Embodiment 2

[0044] Please refer to Figures 1 to 3 , this embodiment further explains the telescopic adjustment mechanism proposed in embodiment 1.

[0045] The telescopic adjusting mechanism comprises a base 1, a transmission member 2 and a worm gear elevator 3, wherein one end of a screw rod 301 in the worm gear elevator 3 is connected with the base 1, the other end of the screw rod 301 is screw-engaged with a worm gear 302 after penetrating through the transmission member 2, the worm gear 302 is connected and fixed with the transmission member 2 through a connecting block 303, first and second connecting plates 4 and 5 are arranged on the base 1 and on both sides of the worm gear elevator 3, the first connecting plate 4 is oppositely arranged with the second connecting plate 5, first and second guide grooves 401 and 501 are respectively arranged on the first and second connecting plates 4 and 5, and the transmission member 2 is slidingly connected with the first and second guide grooves 401 and 501.

[0046] In an optional embodiment, a pad 6 is arranged between the transmission member 2 and the first connecting plate 4, and the transmission member 2 is slidingly connected with the first guide groove 401 through the pad 6.

[0047] In the embodiment, the pad 6 is used as a guide member matched with the first guide groove 401 and sliding along the first guide groove 401, and the pad 6 is also used for supporting the transmission member 2 to ensure that the transmission member 2 is in the same height as the base 1 in the horizontal direction, thereby ensuring the stability of the telescopic movement.

[0048] Further, the first guide groove 401 arranged on the first connecting plate 4 is a through groove, and the pad 6 extends out of the first guide groove 401.

[0049] In the embodiment, when the transmission member 2 is driven to the target position by the worm gear elevator 3, the transmission member 2 is locked through the first guide groove 401 by using a screw or other tools, so as to avoid the sliding of the transmission member 2.

[0050] Further, the pad 6 is connected with a pulley after extending out of the first guide groove 401.

[0051] In the embodiment, after the transmission member 2 is driven to the target position by the worm gear elevator 3 and is locked, the transmission member 2 is moved on the plane by the pulley.

[0052] Further, the first guide groove 401 is a long-waisted groove structure.

[0053] In an optional embodiment, a steel wheel 7 is arranged on the transmission member 2, the width of the second guide groove 501 matches the steel wheel 7, and the transmission member 2 is slidingly connected with the second guide groove 501 through the steel wheel 7.

[0054] The steel wheel 7 in the embodiment is arranged on the transmission member 2 and close to one side of the second connecting plate 5. The second guide slot 501 arranged on the second connecting plate 5 has a width matching the steel wheel 7, for supporting the transmission member 2 to move in the direction of the second guide slot 501, while avoiding dislocation of the transmission member 2.

[0055] Further, the second connecting plate 5 is an L-shaped connecting plate, and the second connecting plate 5 is provided with a reinforcing rib.

[0056] The second connecting plate 5 is connected and fixed to the base 1 by a fastening screw, and the other fold surface is provided with the second guide slot 501.

[0057] The reinforcing rib added to the second connecting plate 5 in the embodiment can effectively bear the load of the whole mechanism, preventing the telescopic adjusting mechanism from deforming during operation.

[0058] Embodiment 3

[0059] Please refer to Figures 1 to 3 , the embodiment further describes the telescopic adjusting mechanism proposed in embodiments 1 and 2.

[0060] The telescopic adjusting mechanism proposed in the embodiment includes a base 1, a transmission member 2 and a worm gear elevator 3. One end of a screw rod 301 in the worm gear elevator 3 is connected to the base 1, and the other end of the screw rod 301 is screw-engaged with a worm gear 302 after penetrating through the transmission member 2. The worm gear 302 is connected and fixed to the transmission member 2 through a connecting block 303. The base 1 is provided with a first connecting plate 4 and a second connecting plate 5 on both sides of the worm gear elevator 3, and the first connecting plate 4 and the second connecting plate 5 are arranged opposite to each other. The first connecting plate 4 and the second connecting plate 5 are respectively provided with a first guide slot 401 and a second guide slot 501, and the transmission member 2 is slidingly connected to the first guide slot 401 and the second guide slot 501.

[0061] Further, the base 1 is further provided with a guide shaft 8, one end of the guide shaft 8 is fixed to the base 1, and the other end of the guide shaft 8 is arranged penetrating through the transmission member 2.

[0062] The guide shaft 8 added in the embodiment is used to further increase the guiding property of the worm gear elevator 3, making the telescopic adjustment more smooth, while effectively relieving the overall load of the worm gear elevator 3, avoiding deformation of the telescopic adjusting mechanism during operation.

[0063] Further optionally, a first bearing 201 is arranged on the transmission member 2 at a position where the transmission member 2 is connected to the guide shaft 8; one end of the guide shaft 8 penetrates through the base 1 and is connected to a shaft clamp 801, and a second bearing 101 is arranged on the base 1 at a position where the base 1 is connected to the guide shaft 8.

[0064] The embodiment can effectively increase the guiding property by adding bearings on the transmission member 2 and the base 1 and cooperating with the guide shaft 8. In addition, the shaft clamp 801 arranged at both ends of the guide shaft 8 can ensure that the shaft moves in the bearings without disengaging.

[0065] Optionally, the bearings are short linear bearings and / or long linear bearings selected according to the specifications of the transmission member 2 and the base 1.

[0066] Embodiment 4

[0067] Please refer to Figure 4 The embodiment provides a telescopic adjusting device, and the telescopic adjusting mechanism in Embodiments 1-3 is applied.

[0068] In the telescopic adjusting device, the telescopic adjusting mechanism and the connecting rod assembly 11 are arranged in a sleeving manner.

[0069] In the specific implementation process, the worm gear elevator 3 is driven to work, and the telescopic adjustment of the connecting rod assembly 11 is realized.

[0070] It can be understood that the telescopic adjusting device of the embodiment includes the telescopic adjusting mechanism described in Embodiments 1-3, and the optional items in Embodiments 1-3 are also applicable to the embodiment, so the description is not repeated here.

[0071] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A telescopic adjustment mechanism, characterized in that, The application relates to a telescopic adjusting mechanism, which comprises a base (1), a transmission member (2) and a worm gear elevator (3), wherein one end of a screw rod (301) in the worm gear elevator (3) is connected with the base (1), the other end of the screw rod (301) is screw-engaged with a worm gear (302) after penetrating through the transmission member (2), and the worm gear (302) is connected and fixed with the transmission member (2) through a connecting block (303). First and second connecting plates (4 and 5) are arranged on the base (1) and on both sides of the worm gear elevator (3), the first connecting plate (4) is oppositely arranged with the second connecting plate (5), first and second guide grooves (401 and 501) are respectively arranged on the first and second connecting plates (4 and 5), and the transmission member (2) is slidably connected with the first and second guide grooves (401 and 501).

2. The telescoping adjustment mechanism of claim 1, wherein, A cushion block (6) is arranged between the transmission member (2) and the first connecting plate (4), and the transmission member (2) is slidably connected with the first guide groove (401) through the cushion block (6).

3. The telescoping adjustment mechanism of claim 1, wherein, A steel wheel (7) is arranged on the transmission member (2), the width of the second guide groove (501) matches the steel wheel (7), and the transmission member (2) is slidably connected with the second guide groove (501) through the steel wheel (7).

4. The telescoping adjustment mechanism of claim 3, wherein, The second connecting plate (5) is an L-shaped connecting plate, and reinforcing ribs are arranged on the second connecting plate (5).

5. The telescoping adjustment mechanism of claim 1, wherein, A guide shaft (8) is further arranged on the base (1), one end of the guide shaft (8) is fixed with the base (1), and the other end of the guide shaft (8) penetrates through the transmission member (2).

6. The telescoping adjustment mechanism of claim 5, wherein, A first bearing (201) is arranged on the transmission member (2) at a position connected with the guide shaft (8), a second bearing (101) is arranged on the base (1) at a position connected with the guide shaft (8), and shaft clamps (801) are arranged on both ends of the guide shaft (8).

7. A telescopic adjustment mechanism according to any one of claims 1 to 6, wherein The worm gear elevator (3) is connected with a hand lever.

8. A telescopic adjustment mechanism according to any one of claims 1 to 6, wherein A square steel connecting piece (9) is arranged on one side of the base (1).

9. A telescopic adjustment mechanism according to any one of claims 1 to 6, wherein A plurality of lifting rings (10) are arranged on the base (1) and / or the transmission member (2).

10. A telescopic adjustment device, characterized in that The application further relates to a telescopic adjusting mechanism, which comprises a base (1), a transmission member (2) and a worm gear elevator (3), wherein one end of a screw rod (301) in the worm gear elevator (3) is connected with the base (1), the other end of the screw rod (301) is screw-engaged with a worm gear (302) after penetrating through the transmission member (2), and the worm gear (302) is connected and fixed with the transmission member (2) through a connecting block (303).

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