CN213117346U

CN213117346U - Supporting device for lead screw and rod pulling machine with same

Info

Publication number: CN213117346U
Application number: CN202022031988.1U
Authority: CN
Inventors: 户进征; 张伟强
Original assignee: Beijing Xinlongli Automation Equipment Co ltd
Current assignee: Beijing Xinlongli Automation Equipment Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-05-04
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to a drive mechanism technical field, concretely relates to supporting arrangement for lead screw and have its excellent machine that draws. The support device for a lead screw includes: the nut seat is used for being connected with the lead screw; the two groups of connecting components are oppositely arranged on the nut seat; in an initial state, the connecting assembly is connected with one of the first supporting member and the second supporting member; after the nut seat moves to a set distance, the connecting assembly is connected with the other one of the first supporting piece and the second supporting piece. Because first supporting member and second supporting member all with the lead screw connection in whole use to the supporting lead screw, consequently the utility model discloses a supporting device for lead screw is at the lead screw at the transmission in-process, and lead screw drive precision is high, and remains stable.

Description

Supporting device for lead screw and rod pulling machine with same

Technical Field

The utility model relates to a drive mechanism technical field, concretely relates to supporting arrangement for lead screw and have its excellent machine that draws.

Background

The nuclear fuel is an important clean energy source, the rod pulling process of the nuclear fuel rods generally pulls the fuel rods with the length of about 4m through the grids in the framework layer by layer until all the fuel rods are arranged in the grids, and the equipment for realizing the rod pulling process is generally called a rod pulling machine.

The existing rod pulling machine generally comprises a mounting platform, and a pull rod, a slide carriage mechanism and a rod selecting mechanism which are arranged on the mounting platform, wherein when the rod pulling machine works, the rod selecting mechanism selects a first pull rod, and the slide carriage mechanism drives the first pull rod to reciprocate on the mounting platform. Specifically, the pull rod penetrates through a fuel assembly framework arranged on a fuel assembly platform under the pushing of the slide carriage mechanism, reaches the fuel rod preassembly platform to clamp the fuel rod, and then retracts under the action of the slide carriage mechanism to pull the fuel rod into the fuel assembly framework.

In the prior art, for example, chinese patent document CN201209657Y discloses a hydraulic flexible supporting device for a long lead screw, which relates to the working process that:

when the induction plate moves to the induction switch along with the workbench, the electromagnetic valve is opened by an electric signal to be communicated with the hydraulic system, so that the supporting piston and the bracket move downwards; when the induction plate is separated from the induction switch, the electromagnetic valve is switched off by an electric signal, the oil pressure in the oil cylinder is unloaded, and the elastic force of the compression spring of the supporting piston is connected with the bracket and the lead screw roller thereof to move upwards. By controlling the up-and-down movement of the supporting piston, the support is avoided when the screw nut seat passes by.

When the screw nut seat and the bracket are retracted, the hydraulic flexible supporting device is disengaged from the screw, that is, the hydraulic flexible supporting device does not support the screw, so that the transmission precision of the screw fluctuates in the whole using process.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a supporting device and have its excellent machine of drawing for lead screw to solve the flexible supporting device of long lead screw fluid pressure type among the prior art, do not have the supporting lead screw when screw nut seat dodges with the support, cause the transmission precision of lead screw to take place undulant problem.

The technical scheme of the utility model is that:

a support device for a lead screw, comprising: the nut seat is used for being connected with the lead screw; the two groups of connecting components are oppositely arranged on the nut seat; the first supporting piece and the second supporting piece are respectively arranged at two ends of the nut seat and are respectively used for being connected with the lead screw to support the lead screw, the first supporting piece is connected with the connecting assembly through a first supporting corner block, and the second supporting piece is connected with the connecting assembly through a second supporting corner block; in an initial state, the connecting assembly is connected with one of the first supporting member and the second supporting member; after the nut seat moves to a set distance, the connecting assembly is connected with the other one of the first supporting piece and the second supporting piece.

The coupling assembling includes: the driving component drives the hook to act so that the hook is connected with the first support or the second support.

The middle part of the hook is rotationally connected with the nut seat, and one end of the hook, which is far away from the first supporting part or the second supporting part, is driven by the driving component.

The driving assembly comprises a driving piece and a collision block arranged between the first supporting piece and the second supporting piece, and the collision block is suitable for triggering the driving piece to enable the hook to be separated from the first supporting piece or the second supporting piece.

The driving piece is an elastic piece, two ends of the driving piece are respectively connected with the hook and the nut seat, and the elastic piece is suitable for providing force for enabling the hook to rotate towards the direction of the collision block.

The hook comprises an arc-shaped part and a connecting part, the connecting part is used for being connected with the first supporting part and the second supporting part, the nut seat moves to a set distance and then pushes against the block, and the arc-shaped part pushes against the block to enable the connecting part to rotate.

The connecting assembly further comprises a mounting seat, and the hook and the elastic piece are connected with the nut seat in a rotating mode through the mounting seat.

In the initial state, one of the first support and the second support is arranged in the middle of the screw rod, and the other support is arranged at one end of the screw rod and connected with the nut seat.

The first support is structurally identical to the second support, and includes: the bearing bush is connected with the lead screw.

A rod drawing machine comprises the support device for the lead screw.

The rod pulling machine further comprises a slide carriage and a mounting platform, the screw rod, the collision block, the first supporting piece and the second supporting piece are arranged on the mounting platform, and the screw rod and the slide carriage are connected through a nut seat.

The utility model discloses technical scheme has following advantage:

1. the utility model discloses a supporting arrangement for lead screw, include: the nut seat is used for being connected with the lead screw; the two groups of connecting components are oppositely arranged on the nut seat; the first supporting piece and the second supporting piece are respectively arranged at two ends of the nut seat and are respectively used for being connected with the lead screw to support the lead screw, the first supporting piece is connected with the connecting assembly through a first supporting corner block, and the second supporting piece is connected with the connecting assembly through a second supporting corner block; in an initial state, the first support and the second support both support the screw rod, and the connecting assembly is connected with one of the first support and the second support; after the nut seat moves to a set distance, the connecting assembly is connected with the other one of the first supporting piece and the second supporting piece.

The first supporting piece and the second supporting piece are connected with the lead screw in the whole using process and support the lead screw, so that the transmission precision of the lead screw is kept stable in the transmission process of the lead screw, and one of the first supporting piece and the second supporting piece moves along with the nut seat all the time under the action of the connecting assembly, namely, the first supporting piece and the second supporting piece are close to the nut seat, so that the deformation of the lead screw is smaller, and the transmission precision of the lead screw is further improved.

2. The utility model discloses a supporting device for lead screw, drive assembly include the driving piece to and locate the piece that hits between first support piece and the second support piece, hit the piece and be suitable for triggering the driving piece, make couple and first support piece or second support piece separate.

In an initial state, the hook is connected with one of the first supporting part and the second supporting part; the nut seat passes through the collision block after moving to a set distance, the collision block presses the hook, the driving piece is triggered to enable the hook of one group of connecting components to be separated from one of the first supporting piece and the second supporting piece, and the hook of the other group of connecting components is connected with the other one of the first supporting piece and the second supporting piece. Through the arrangement of the collision block, the component with a simple structure can switch the connecting component between the first supporting part and the second supporting part very skillfully, and the manufacturing cost of the supporting device for the lead screw is reduced.

3. The utility model discloses a supporting arrangement for lead screw, couple include arc portion and connecting portion, and connecting portion are used for being connected with first supporter and second supporter, and the nut seat removes to setting for the distance after through hitting the piece, arc portion with hit the piece and offset, make connecting portion take place to rotate. Through setting up arc portion for it can make the connecting portion rotate smoothly to hit the piece, and break away from with first supporting part or second supporting part.

4. The utility model discloses a supporting device for lead screw, one of them setting of first support piece and second support piece is in the intermediate position of lead screw, and wherein another locates lead screw one end and is connected with the nut seat.

One of the first support and the second support is arranged in the middle of the lead screw, and in the process that the nut seat moves along the lead screw, the stress generated at each part of the lead screw is small, so that the transmission precision of the lead screw is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a rod drawing machine of the present invention;

fig. 2 is a schematic structural view of the support device for a lead screw according to the present invention in an initial state;

fig. 3 is a schematic structural view of the screw support device according to the present invention after moving to a predetermined distance.

Description of reference numerals:

1-a lead screw; 2-a nut seat; 3-a first support; 4-a second support; 5-an elastic member; 6-hooking; 7-collision block; 8-an arc-shaped portion; 9-a connecting part; 10-a mounting seat; 11-a supporting seat; 12-bearing bush; 13-slide carriage; 14-mounting a platform; 15-a pull rod; 16-a first support corner block; 17-second support corner block.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

The present embodiment provides a support device for a lead screw, as shown in fig. 1 to 3, including: the screw-driven connecting device comprises a nut seat 2, a connecting assembly, a first supporting piece 3 and a second supporting piece 4, wherein the nut seat 2 is used for being connected with a screw rod 1; the two groups of connecting components are oppositely arranged on the nut seat 2; the first support member 3 and the second support member 4 are respectively arranged at two ends of the nut seat 2 and are both used for being connected with the screw rod 1 to support the screw rod 1; in the initial state, the connecting assembly is connected with the first support 3; after the nut seat 2 is moved to a set distance, the connecting assembly is connected with the second supporting member 4.

As an alternative embodiment, in the initial state, the connection assembly is connected to the second support 4; after the nut seat 2 moves to a set distance, the connecting assembly is connected with the first support 3.

The first support part 3 and the second support part 4 are connected with the screw rod 1 in the whole using process and support the screw rod 1, so that the transmission precision of the screw rod 1 is kept stable in the transmission process of the screw rod 1, and one of the first support part 3 and the second support part 4 always moves along with the nut seat 2 under the action of the connecting assembly, so that the deformation of the screw rod 1 is smaller, and the transmission precision of the screw rod 1 is further improved.

Wherein, coupling assembling includes: the driving component drives the hook 6 to act, so that the hook 6 is connected with the first support 3 or the second support 4. The middle part of the hook 6 is rotationally connected with the nut seat 2, and one end of the hook, which is far away from the first supporting part 3 or the second supporting part 4, is driven by the driving component.

As an alternative embodiment, the connection assembly comprises: the motor drives the screw to rotate so as to be connected with the first support part 3 or the second support part 4.

Wherein the drive assembly comprises a drive member and a striking block 7 arranged between the first support member 3 and the second support member 4, the striking block 7 being adapted to trigger the drive member to disengage the hook 6 from the first support member 3 or the second support member 4.

In the initial state, the hook 6 is connected with the first support 3; after the nut seat 2 moves to a set distance, the nut seat passes through the collision block 7, the collision block 7 presses the hook 6 and triggers the driving piece, so that the hook 6 of one group of connecting components is separated from the first supporting piece 3, and the hook 6 of the other group of connecting components is connected with the second supporting piece 4. By providing the striking block 7, which is a simple component, the switching of the connecting assembly between the first support member 3 and the second support member 4 is achieved very skillfully, and the manufacturing cost of the support device for the lead screw is reduced.

Wherein, the driving member is an elastic member 5, both ends of which are respectively connected with the hook 6 and the nut seat 2, the elastic member 5 is adapted to provide a force for rotating the hook 6 towards the striking block 7, as shown in fig. 2, for the hook on the left side, the elastic member 5 provides a clockwise rotating force to the hook, and for the hook on the right side, the elastic member 5 provides an anticlockwise rotating force to the hook.

As an alternative embodiment, the driving member may be a motor or a cylinder, and a touch force sensor is provided on the hook 6, and when the striker 7 presses the hook 6, the motor or the cylinder drives the hook 6 to rotate to disengage from the first support member 3 or the second support member 4.

In the support device for the lead screw according to the present embodiment, the hook 6 includes the arc portion 8 and the connection portion 9, the connection portion 9 is used to connect the first support member 3 and the second support member 4, the nut seat 2 passes through the collision block 7 after moving to a predetermined distance, and the arc portion 8 abuts against the collision block 7, so that the connection portion 9 rotates. By providing the arc portion 8, the striking block 7 can smoothly rotate the connecting portion 9 and disengage from the first support 3 or the second support 4.

The connecting assembly further comprises a mounting seat 10, and the hook 6 and the elastic piece 5 are connected with the nut seat 2 in a rotating mode through the mounting seat 10. When the screw rod supporting device is used, the hook 6 and the elastic piece 5 can be connected with the mounting seat 10 in advance, the hook 6 is hinged to the mounting seat 10 through the rotation of the screw, the mounting seat 10 is mounted on the nut seat 2, and the mounting seat 10 and the nut seat 2 are connected through the screw, so that the screw rod supporting device is mounted more quickly and conveniently.

In an initial state, one of the first support 3 and the second support 4 is arranged in the middle of the screw rod 1, and the other support is arranged at one end of the screw rod 1 and connected with the nut seat 2, so that in the process that the nut seat 2 moves along the screw rod 1, stress generated at each part of the screw rod 1 is small, and the transmission precision of the screw rod 1 is further improved.

Wherein the first support 3 is structurally identical to the second support 4, the second support 4 comprising: the bearing bush 12 is connected with the lead screw 1, the first support 3 is connected with the hook through a first support corner block 16, and the second support 4 is connected through a second support corner block 17.

Example two

The present embodiment provides a rod drawing machine, as shown in fig. 1, including the support device for a lead screw according to the first embodiment.

The rod drawing machine of the embodiment also comprises a slide carriage 13 and a mounting platform 14, and a pull rod 15 is arranged between the slide carriage 13 and the mounting platform 14.

The screw rod 1, the collision block 7, the first support part 3 and the second support part 4 are arranged on the mounting platform 14, the screw rod 1 is connected with the slide carriage 13 through the nut seat 2, and the slide carriage 13 is arranged on one side of the nut seat 2 and moves under the driving of the nut seat 2. Through setting up supporting device for the lead screw, make the rod drawing machine of this embodiment in the use, have better transmission precision, can accurately drive pull rod 15 and snatch the fuel rod.

As an alternative embodiment, the slide carriage 13 and the nut holder 2 may be of one-piece construction.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A support device for a lead screw, comprising:

a nut seat (2) for connecting with the lead screw (1);

the two groups of connecting components are oppositely arranged on the nut seat (2);

the first supporting piece (3) and the second supporting piece (4) are respectively arranged at two ends of the nut seat (2) and are respectively used for being connected with the lead screw (1) to support the lead screw (1), the first supporting piece (3) is connected with the connecting assembly through a first supporting corner block (16), and the second supporting piece (4) is connected with the connecting assembly through a second supporting corner block (17);

in an initial state, the connecting assembly is connected with one of the first support (3) and the second support (4); after the nut seat (2) moves to a set distance, the connecting assembly is connected with the other one of the first support (3) and the second support (4).

2. The support device for a lead screw according to claim 1, wherein the connecting assembly includes:

the drive assembly drives the hook (6) to act, so that the hook (6) is connected with the first support (3) or the second support (4).

3. A support device for a threaded spindle according to claim 2, characterized in that the central part of the hook (6) is connected in rotation to the nut holder (2), the end of which remote from the first support (3) or the second support (4) is driven by the drive assembly.

4. A support device for a screw according to claim 3, characterized in that said drive assembly comprises a drive member and a striker (7) arranged between said first support (3) and said second support (4), said striker (7) being suitable for triggering said drive member to disengage said hook (6) from said first support (3) or said second support (4).

5. A support device for a lead screw according to claim 4, characterized in that the driving member is an elastic member (5) having both ends connected to the hook (6) and the nut seat (2), respectively, the elastic member (5) being adapted to provide a force for rotating the hook (6) in a direction toward the bump (7).

6. The screw support device according to claim 5, wherein the hook (6) includes an arc portion and a connecting portion for connecting the first support (3) and the second support (4), the nut seat (2) passes the collision block (7) after moving to the predetermined distance, and the arc portion abuts against the collision block (7) to rotate the connecting portion.

7. A support device for a lead screw according to claim 5, characterized in that the connecting assembly further comprises a mounting seat (10), and the hook (6) and the elastic member (5) are rotatably connected with the nut seat (2) through the mounting seat (10).

8. A support device for a lead screw according to any one of claims 1 to 6, wherein in an initial state, one of the first support (3) and the second support (4) is arranged at an intermediate position of the lead screw (1), and the other is arranged at one end of the lead screw (1) and connected to the nut holder (2).

9. A support device for a lead screw according to any one of claims 1 to 6, characterized in that the first support (3) is structurally identical to the second support (4), the first support (3) comprising: the bearing comprises a supporting seat (11) and a bearing bush (12) arranged on the supporting seat (11), wherein the bearing bush (12) is connected with the screw rod (1).

10. A bar drawing machine, characterized by comprising the support device for a screw according to any one of claims 1 to 9.

11. A rod drawing machine according to claim 10, characterized by further comprising a slide carriage (13) and a mounting platform (14), wherein the screw (1), the striking block (7), the first support (3) and the second support (4) are all arranged on the mounting platform (14), and the screw (1) and the slide carriage (13) are connected through a nut seat (2).