CN219311008U

CN219311008U - Beam lifting device

Info

Publication number: CN219311008U
Application number: CN202320285832.7U
Authority: CN
Inventors: 刘卫民; 赵彦峰; 郑公社; 李海滨
Original assignee: Luoyang Qingda Bearing Equipment Precision Parts Co ltd
Current assignee: Luoyang Qingda Bearing Equipment Precision Parts Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-07-07
Anticipated expiration: 2033-02-22

Abstract

The utility model relates to the technical field of superfinishing machines, in particular to a beam lifting device. Comprises a column, a driving device and an auxiliary device. The beam body is matched with the ball screw of the screw rod to realize lifting, so that the structure has the characteristics of long adjustment distance, convenient locking, simple operation and the like, the operation intensity of operators is reduced, and meanwhile, replacement without removing the superfinishing head is realized, so that the replacement time of the superfinishing roller is reduced. When the beam body moves downwards to a preset position, the auxiliary device assists the beam body to stop at the preset position stably, and vibration of the beam body caused by movement inertia in the stopping process after the driving piece is stopped is reduced; thereby preventing the precision of the superfinishing machine from being influenced by the looseness of the superfinishing head due to the vibration of the beam body.

Description

Beam lifting device

Technical Field

The utility model relates to the technical field of superfinishing machines, in particular to a beam lifting device.

Background

The superfinishing machine presses the oilstone against the rotating workpiece at a relatively low pressure to form a surface contact condition, while the oilstone vibrates axially at a relatively high frequency. The super-finishing machine body is provided with a super-finishing roller, and a cross beam for installing a super-finishing head is arranged above the super-finishing roller. During the use process of the superfinishing machine, superfinishing rollers with different specifications can be used according to requirements. When the cross beam is replaced, the cross beam is usually required to be adjusted by a manual wrench, so that the operation is inconvenient and the adjustment distance is small. When the super-finishing roller needs to be replaced, all super-finishing heads on the super-finishing roller need to be removed, so that space is saved for hanging the super-finishing roller, and the super-finishing roller is time-consuming and labor-consuming to replace, so that inconvenience is caused.

Disclosure of Invention

The utility model provides a beam lifting device to solve the problems.

The utility model adopts the following technical scheme: a beam lifting device comprises a stand column, a driving device and an auxiliary device;

the upright post is fixedly arranged on the machine tool; the beam body is arranged on the upright post in a sliding way through the guide rail;

the driving device comprises a screw rod and a driving piece; the screw rod is vertically arranged and rotatably arranged on the upright post; the screw rod is matched with the beam body through a ball screw; the driving piece is used for driving the screw rod to rotate so as to drive the beam body to move up and down;

the control device is used for stopping the driving piece when the screw rod drives the beam body to move downwards to a preset position;

the auxiliary device is arranged between the upright post and the beam body and is configured to stably stop at a preset position when the screw rod drives the beam body to move downwards to the preset position, so that vibration of the beam body caused by movement inertia in the stopping process after the driving piece is stopped is reduced; thereby preventing the superfinishing head from loosening due to vibration of the beam body, and further affecting the precision of the superfinishing machine.

Further, the driving piece is a gear reduction motor and is used for driving the screw rod to rotate.

Further, the control device is a proximity switch; the proximity switch is arranged at a preset position and used for sending out a stop electric signal when the beam body touches the proximity switch, and controlling the gear reduction motor to stop rotating.

Further, the auxiliary device comprises a matching piece, a power piece and an auxiliary block; the matching piece comprises a shell and a friction wheel; the shell is arranged on the upright post in a vertical moving way; a limiting piece is arranged between the shell and the upright post; the shell is provided with a V-shaped auxiliary groove with a downward small end; the friction wheels are arranged in a plurality and are arranged along the walls of the auxiliary grooves; the friction wheel is rotatably arranged on the shell; the auxiliary block is in a V shape with a downward small end and is fixedly arranged on the beam body; two sides of the auxiliary block are provided with an adapting groove; the adapting groove is fan-shaped; a fan-shaped contact block is arranged in the adapting groove; the upper end of the contact block is rotatably arranged at the upper end of the auxiliary block; the lower end is abutted on the guide rail; a pressing spring is connected between the contact block and the groove wall of the adapting groove so that the lower end of the contact block is pressed against the guide rail; the power piece is used for driving the beam body to move downwards to a preset position by the screw rod, so that the friction wheel is driven to rotate in the pressing process of the contact block and the friction wheel, and an upward supporting lifting force is provided for the beam body by the contact block. Meanwhile, the V-shaped auxiliary groove moves downwards along with the contact block, the beam body is firmer under the pushing of the pressing spring, and vibration of the beam body caused by movement inertia in the stopping process after the gear reduction motor is stopped is reduced under the synergistic effect of the lifting force and the pressing spring; thereby preventing the precision of the superfinishing machine from being influenced by the looseness of the superfinishing head due to the vibration of the beam body.

Further, the power piece comprises a power rack, a contact hydraulic cylinder and a power hydraulic cylinder; the power rack is arranged vertically and slidably mounted on the shell; the power rack and the friction wheel rotating shaft are meshed and transmitted through a gear set;

the contact hydraulic cylinder is vertically fixed on the shell and is positioned below the auxiliary groove; the movable end of the piston rod of the contact hydraulic cylinder extends upwards to the auxiliary groove to be arranged, and a contact piece is fixed at the end part of the piston rod; a buffer spring is connected between the contact hydraulic cylinder piston and the contact hydraulic cylinder inner wall; the power hydraulic cylinder is vertically fixed on the shell and is positioned at one side of the friction wheel; the power hydraulic cylinder is communicated with the contact hydraulic cylinder through an oil pipe; the upper end of a piston rod of the power hydraulic cylinder is fixedly connected with the upper end of the power rack, the power rack is used for driving the cross beam body to move downwards to a preset position by the screw rod, so that the lower end of the auxiliary block is propped against the contact piece on the piston rod of the contact hydraulic cylinder in the process of propping against the contact block and the friction wheel, so that hydraulic oil in the contact hydraulic cylinder is pressed into the power hydraulic cylinder, the piston rod of the power hydraulic cylinder is driven to drive the power rack to move upwards, and the power rack drives the friction wheel to roll upwards along the contact block by the gear set.

Further, the limiting piece is a fixed screw; the fixed screw is arranged at the lower end of the contact hydraulic cylinder and is used for tightening the fixed screw when the matching piece moves to a preset position so as to fasten the matching piece on the upright post.

Further, the auxiliary devices are symmetrically provided with two groups and correspond to the guide rails one by one, so that the movement of the beam body is stable when stopped.

Further, the lower end of the contact block is rotatably provided with a roller for enabling the contact block to smoothly slide into the adapting groove.

The beneficial effects of the utility model are as follows: the crossbeam body cooperates with the ball screw through the screw and realizes the lifting, so that the structure has the characteristics of long adjustment distance, convenient locking, simple operation and the like, reduces the operation strength of an operator on one hand, realizes the replacement without removing the superfinishing head on the other hand, and reduces the replacement time of the superfinishing roller.

Further, when the screw rod drives the beam body to move downwards to a preset position, the auxiliary device assists the beam body to stop at the preset position stably, and vibration of the beam body caused by movement inertia in the stopping process after the driving piece is stopped is reduced; thereby preventing the precision of the superfinishing machine from being influenced by the looseness of the superfinishing head due to the vibration of the beam body.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a beam lifting device of the present utility model;

FIG. 2 is a front view of an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the mating member and the power member according to the embodiment of the present utility model;

FIG. 4 is a front view of a mating element, power element, of an embodiment of the present utility model;

FIG. 5 is a top view of a mating element, power element, of an embodiment of the present utility model;

FIG. 6 is a schematic view of a beam body according to an embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a beam body of an embodiment of the present utility model;

fig. 8 is a schematic view of a friction wheel according to an embodiment of the present utility model.

In the figure: 100. a column; 110. a beam body; 120. a guide rail; 130. an electric push rod; 200. a driving device; 210. a screw rod; 220. a gear reduction motor; 300. an auxiliary device; 311. a housing; 312. a friction wheel; 320. an auxiliary block; 322. a contact block; 323. a roller; 331. a power rack; 332. contacting a hydraulic cylinder; 333. a contact piece; 334. a power hydraulic cylinder; 340. and (5) fixing the screw rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

An embodiment of a beam lifting device of the present utility model is shown in fig. 1 to 8: a beam lifting device comprises a column 100, a driving device 200 and an auxiliary device 300. The upright 100 is fixedly mounted on the machine tool. The column 100 is provided with a guide rail 120 for guiding. The beam body 110 is slidably mounted on the column 100 by means of guide rails 120.

The driving device 200 comprises a screw 210 and a driving member. The screw 210 is vertically disposed and rotatably mounted on the column 100. Ball screw engagement is provided between the screw 210 and the beam body 110. The driving member is a gear reduction motor 220 for driving the screw 210 to rotate so as to drive the beam body 110 to move up and down.

The control device comprises an upper proximity switch and a lower proximity switch. The proximity switch is provided at a preset position for emitting a stop electric signal to control the gear reduction motor 220 to stop rotating when the beam body 110 touches the proximity switch.

The auxiliary device 300 is disposed between the upright post 100 and the beam body 110, and is configured to stably stop at a preset position when the screw rod 210 drives the beam body 110 to move down to the preset position, so as to reduce vibration of the beam body 110 caused by motion inertia in the stop process of the driving member after the driving member is stopped, prevent the superfinishing head from loosening due to vibration of the beam body 110, and further influence the precision of the superfinishing machine.

In this embodiment, the auxiliary device 300 includes a mating member, a power member, and an auxiliary block 320. The mating element includes a housing 311, a friction wheel 312. The housing 311 is provided on the column 100 to move up and down. A limiting member is provided between the housing 311 and the column 100. The upper end of the shell 311 is connected with an electric push rod 130, and the electric push rod 130 is fixed on the upright post 100 and used for adjusting the position of the matching piece. The shell 311 is provided with a V-shaped auxiliary groove with a downward small end. The friction wheel 312 is provided in plurality and is provided along the wall of the auxiliary groove. Friction wheel 312 is rotatably mounted on housing 311. The auxiliary block 320 is V-shaped with a small end facing downward, and is fixedly installed on the beam body 110. The auxiliary block 320 is provided with an adaptation groove at both sides. The adaptation groove is fan-shaped. A fan-shaped contact block 322 is arranged in the adapting groove. The upper end of the contact block 322 is rotatably mounted on the upper end of the auxiliary block 320. The lower end abuts on the guide rail 120. A pressing spring is connected between the contact block 322 and the wall of the adapting groove, so that the lower end of the contact block 322 is pressed against the guide rail 120. The power member is used for driving the beam body 110 to move down to a preset position by the screw rod 210, so that the friction wheel 312 is driven to rotate in the process of pressing the contact block 322 and the friction wheel 312, and an upward lifting force is provided for the beam body 110 by the contact block 322. Meanwhile, the V-shaped auxiliary groove moves downwards along with the contact block 322, the beam body 110 is firmer under the pushing of the pressing spring, and vibration of the beam body 110 caused by movement inertia in the stopping process after the gear reduction motor 220 is stopped is reduced under the synergistic effect of the lifting force and the pressing spring. Thereby preventing the superfinishing head from affecting the precision of the superfinishing machine due to the vibration of the beam body 110 to produce looseness.

In this embodiment, the power components include a power rack 331, a contact hydraulic cylinder 332, and a power hydraulic cylinder 334. The power rack 331 is slidably mounted in a vertical arrangement on the housing 311. The power rack 331 and the friction wheel 312 are meshed and driven by a gear set.

The contact cylinder 332 is vertically fixed to the housing 311 below the auxiliary tank. The movable end of the piston rod of the contact hydraulic cylinder 332 extends upwards to the auxiliary groove, and a contact sheet 333 is fixed at the end. A buffer spring is connected between the piston of the contact hydraulic cylinder 332 and the inner wall of the contact hydraulic cylinder 332. The power cylinder 334 is vertically fixed to the housing 311 on the side of the friction wheel 312. The power cylinder 334 and the contact cylinder 332 communicate through tubing. The upper end of the piston rod of the power hydraulic cylinder 334 is fixedly connected with the upper end of the power rack 331, and is used for driving the beam body 110 to move downwards to a preset position by the screw rod 210, so that in the abutting process of the contact block 322 and the friction wheel 312, the lower end of the auxiliary block 320 abuts against the contact sheet 333 on the piston rod of the contact hydraulic cylinder 332, so that hydraulic oil in the contact hydraulic cylinder 332 is pressed into the power hydraulic cylinder 334, the piston rod of the power hydraulic cylinder 334 is driven to drive the power rack 331 to move upwards, and the power rack 331 drives the friction wheel 312 to roll upwards along the contact block 322 by a gear set.

In this embodiment, the limiting member is a fixing screw 340. A set screw 340 is provided at the lower end of the contact hydraulic cylinder 332 for tightening the set screw 340 to fasten the mating member to the column 100 when the mating member is moved to a preset position.

In this embodiment, the auxiliary devices 300 are symmetrically provided with two groups, and are in one-to-one correspondence with the guide rails 120, so as to make the movement of the beam body 110 smoother when stopped.

In this embodiment, the lower end of the contact block 322 is rotatably provided with a roller 323 for smoothly sliding the contact block 322 into the fitting groove.

In combination with the above embodiment, the use principle and working process of the present utility model are as follows: the gear reduction motor 220 drives the rotation of the screw rod 210 to drive the beam body 110 to move up and down. When the beam body 110 touches the proximity switch, a stop electric signal is sent out to control the gear reduction motor 220 to stop rotating.

In the process that the screw rod 210 drives the beam body 110 to move down to a preset position, the lower end of the auxiliary block 320 is propped against the contact sheet 333 on the piston rod of the contact hydraulic cylinder 332, so as to press the hydraulic oil in the contact hydraulic cylinder 332 into the power hydraulic cylinder 334, drive the piston rod of the power hydraulic cylinder 334 to drive the power rack 331 to move up, and the power rack 331 drives the friction wheel 312 to roll up along the contact block 322 through the gear set, so that an upward lifting force is provided for the beam body 110 through the contact block 322. Meanwhile, the V-shaped auxiliary groove moves downwards along with the contact block 322, the beam body 110 is firmer under the pushing of the pressing spring, and vibration of the beam body 110 caused by movement inertia in the stopping process after the gear reduction motor 220 is stopped is reduced under the synergistic effect of the lifting force and the pressing spring. Thereby preventing the superfinishing head from finally affecting the precision of the superfinishing machine due to the vibration of the beam body 110 to produce looseness.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a crossbeam elevating gear which characterized in that: comprises a column (100), a driving device (200) and an auxiliary device (300);

the beam body (110) is slidably arranged on the upright post (100) through a guide rail (120);

the driving device (200) comprises a screw rod (210) and a driving piece; the screw rod (210) is vertically arranged and rotatably installed on the upright post (100); the screw rod (210) is matched with the beam body (110) through a ball screw; the driving piece is used for driving the screw rod (210) to rotate so as to drive the beam body (110) to move up and down;

the control device is used for stopping the driving piece when the screw rod (210) drives the beam body (110) to move down to a preset position;

the auxiliary device (300) is arranged between the upright post (100) and the beam body (110) and is configured to stably stop at a preset position when the screw rod (210) drives the beam body (110) to move down to the preset position, so that vibration of the beam body (110) caused by movement inertia in the stopping process of the driving piece is reduced.

2. A beam lifting device according to claim 1, characterized in that: the driving member is a gear reduction motor (220).

3. A beam lifting device according to claim 2, characterized in that: the control device is a proximity switch; the proximity switch is arranged at a preset position.

4. A beam lifting device according to claim 1, characterized in that: the auxiliary device (300) comprises a matching piece, a power piece and an auxiliary block (320); the matching piece comprises a shell (311) and a friction wheel (312); the shell (311) is arranged on the upright post (100) in a vertical moving way; a limiting piece is arranged between the shell (311) and the upright post (100); the shell (311) is provided with a V-shaped auxiliary groove with a downward small end; the friction wheels (312) are arranged along the walls of the auxiliary grooves; the friction wheel (312) is rotatably arranged on the shell (311); the auxiliary block (320) is in a V shape with a downward small end and is fixedly arranged on the beam body (110); two sides of the auxiliary block (320) are provided with adapting grooves; the adapting groove is fan-shaped; a fan-shaped contact block (322) is arranged in the adapting groove; the upper end of the contact block (322) is rotatably arranged at the upper end of the auxiliary block (320); the lower end is abutted against the guide rail (120); a pressing spring is connected between the contact block (322) and the wall of the adapting groove; the power piece is used for driving the beam body (110) to move downwards to a preset position through the screw rod (210), so that the friction wheel (312) is driven to rotate in the pressing process of the contact block (322) and the friction wheel (312), and an upward lifting force is provided for the beam body (110) through the contact block (322).

5. The beam lifting device of claim 4, wherein: the power piece comprises a power rack (331), a contact hydraulic cylinder (332) and a power hydraulic cylinder (334); the power rack (331) is arranged on the shell (311) in a sliding way in a vertical way; the power rack (331) and the rotating shaft of the friction wheel (312) are meshed and transmitted through a gear set;

the contact hydraulic cylinder (332) is vertically fixed on the shell (311) and is positioned below the auxiliary groove; the movable end of a piston rod of the contact hydraulic cylinder (332) extends upwards to the auxiliary groove to be arranged, and a contact sheet (333) is fixed at the end part of the piston rod; a buffer spring is connected between the piston of the contact hydraulic cylinder (332) and the inner wall of the contact hydraulic cylinder (332); the power hydraulic cylinder (334) is vertically fixed on the shell (311) and is positioned on one side of the friction wheel (312); the power hydraulic cylinder (334) is communicated with the contact hydraulic cylinder (332) through an oil pipe; the upper end of a piston rod of the power hydraulic cylinder (334) is fixedly connected with the upper end of the power rack (331).

6. A beam lifting device according to claim 5, wherein: the limiting piece is a fixed screw (340); the fixed screw (340) is arranged at the lower end of the contact hydraulic cylinder (332).

7. A beam lifting device according to any one of claims 4-6, characterized in that: the auxiliary devices (300) are symmetrically provided with two groups and are in one-to-one correspondence with the guide rails (120).

8. The beam lifting device of claim 4, wherein: the lower end of the contact block (322) is rotatably provided with a roller (323).