Monitoring and controlling device for synchronous driving of left and right screw rods of cross beam of double-column vertical lathe
By installing symmetrical gear plates and contactless switches in the double-column upright, the operation of the dual-out shaft AC motor is monitored and controlled, and the problem of left and right screws due to the falling off of the tooth engagement coupling during the beam rise is solved. , avoiding the occurrence of cross beam tilt and accidents.
Patent Information
- Application Number
- CN202420986785.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-09
AI Technical Summary
During the ascending process, the cross beam of the double-column upright car is prone to be out of sync with the left and right screws due to the toothed coupling and the shaft falling off, which in turn causes the cross beam to tilt and inserts to bite, which may lead to accidents.
Two sets of tooth plates with the same number of teeth are symmetrically installed on the input shaft of the left and right worm gear box, and the synchronization status of the tooth plate is monitored with contactless switches. When abnormal synchronization is detected, the control system will immediately stop and double-out The AC motor prevents the beam from continuing to rise.
It effectively avoids accidents caused by the inclined cross beam movement, ensures smooth movement of cross beam, and reduces the probability of the toothed joint coupling falling off from the shaft.
Smart Images
Figure CN222531323U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a double-column vertical lathe, in particular to a double-column vertical lathe crossbeam left and right screw rod synchronous drive monitoring control device. Background Art
[0002] The crossbeam of the double-column vertical lathe is driven by a double-shaft AC motor to drive the corresponding worm gear boxes on the left and right sides, thereby driving the respective connected screws to move the crossbeam up and down. Since the motor shaft of the double-shaft AC motor is far away from the input shaft of the corresponding worm gear box, the two must be connected by a coupling and a connecting rod to achieve power transmission.
[0003] Due to factors such as assembly requirements, the coupling needs to use a tooth engagement coupling, that is: the connection between the input shaft of the left worm gear box and the left end of the left connecting rod, the connection between the right end of the left connecting rod and the left motor shaft of the double-shaft AC motor, the connection between the input shaft of the right worm gear box and the right end of the right connecting rod, and the connection between the left end of the right connecting rod and the right motor shaft of the double-shaft AC motor all use a tooth engagement coupling.
[0004] For the convenience of description, the left motor shaft of the double-shaft AC motor, the input shaft of the left worm gear box, the left connecting rod, the right motor shaft of the double-shaft AC motor, the input shaft of the right worm gear box, and the right connecting rod are all referred to as shafts. The toothed coupling is fastened with a locking screw when connected to the shaft. Since the shaft is heat treated during the processing to strengthen the strength of the shaft, it is easy to fail to push the screw on the shaft when tightening with a locking screw, that is, it is impossible to push out the pit, or the ejection pit is shallow. The shaft will generate lateral force due to factors such as torque during rotation, and the existence of lateral force can easily cause the toothed coupling to fall off from the shaft. The double-shaft AC motor drives the corresponding worm gear boxes on the left and right sides, thereby driving the connected screws to make the beam move up and down. If any tooth engagement coupling falls off from the shaft, it will cause the screw at one end to continue rotating and moving up and down, while the screw at the other end will stop, causing the beam to tilt during the rising process, which will then cause the insert between the beam and the column guide surface to bite, resulting in an accident. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a double-column vertical lathe crossbeam left and right screw rod synchronous drive monitoring and control device which can monitor whether the left and right screw rods are synchronous and immediately stop the machine when the left and right screw rods are out of sync.
[0006] The double-column vertical lathes currently seen have a structure in which the crossbeam on the double-column vertical lathe can move up and down: a left slide rail is vertically arranged on the left column of the double-column vertical lathe, and a right slide rail is vertically arranged on the right column of the double-column vertical lathe, the crossbeam is arranged on the left slide rail and the right slide rail through a slider group, and the crossbeam can move up and down along the left slide rail and the right slide rail under the drive of a driving device.
[0007] The structure of the driving device is as follows: a double-output shaft AC motor is fixedly installed in the middle of the top beam of the double-column vertical lathe, a left worm gear box is arranged on the top of the left column of the double-column vertical lathe, and a right turbine worm gear box is arranged on the top of the right column of the double-column vertical lathe. The left motor shaft and the right motor shaft of the double-output shaft AC motor, the input shaft of the left worm gear box, and the input shaft of the right turbine worm gear box are on the same axis; the left end of the left connecting rod is connected to the input shaft of the left worm gear box through a first gear meshing coupling, the right end of the left connecting rod is connected to the left motor shaft of the double-output shaft AC motor through a second gear meshing coupling, and the left end of the right connecting rod is connected to the left motor shaft of the double-output shaft AC motor through a third gear meshing coupling. The shaft is connected to the right motor shaft of the double-output shaft AC motor, and the right end portion of the right connecting rod is connected to the input shaft of the right worm gear box through the fourth tooth meshing coupling; the top of the left lead screw vertically supported on the left column through the first bearing group extends into the left turbine worm gear box, meshing with the turbine in the left worm gear box, and the top of the right lead screw vertically supported on the right column through the second bearing group extends into the right turbine worm gear box, meshing with the turbine in the right worm gear box; a left nut structure rotated on the left lead screw and a right nut structure rotated on the right lead screw are arranged on the crossbeam; when the double-output shaft AC motor is running, the left nut structure and the right nut structure can move synchronously in the same direction.
[0008] For the convenience of description, the first gear meshing coupling, the second gear meshing coupling, the third gear meshing coupling, and the fourth gear meshing coupling are collectively referred to as gear meshing couplings, and the left motor shaft of the double-shaft AC motor, the input shaft of the left worm gear box, the left connecting rod, the right motor shaft of the double-shaft AC motor, the input shaft of the right worm gear box, and the right connecting rod are collectively referred to as shafts. In order to solve the problem of tilting during the rising process of the crossbeam caused by the gear meshing coupling and the shaft falling off, which makes the left and right screws asynchronous, the technical solution adopted by the utility model is to design two sets of toothed discs with the same number of teeth, which are symmetrically installed on the input shaft of the left worm gear box and the input shaft of the right worm gear box, and then two contactless switches are used to align the two sets of toothed discs respectively. When the double-shaft AC motor is running, under normal working conditions, the two toothed discs also run synchronously, and the signals received by the two contactless switches are also synchronous. When the screw rod on one side suddenly stops rotating, the corresponding gear disc on that side also stops rotating, and becomes asynchronous with the gear disc on the other side. The two contactless switches receive the asynchronous signal, and the control system can control the double-output shaft AC motor to stop according to the asynchronous signal, thereby stopping the lifting of the beam and avoiding accidents caused by the tilting and up and down movement of the beam.
[0009] In summary, the specific structure of the technical solution described in the utility model is: the left and right screw synchronous drive monitoring and control device of the double-column vertical lathe crossbeam is fixedly provided with a left gear disc on the input shaft of the left turbine worm gear box, and a left contactless switch is fixedly installed on the left worm gear box, and the left contactless switch is aligned with the circumferential surface of the left gear disc; a right gear disc is fixedly provided on the input shaft of the right turbine worm gear box, and a right contactless switch is fixedly installed on the right worm gear box, and the right contactless switch is aligned with the circumferential surface of the right gear disc; the signal line of the left contactless switch, the signal line of the right contactless switch, and the control signal line of the double-output shaft AC motor are all connected to the control system.
[0010] The double-shaft AC motor drives the corresponding left worm gear box and right turbine box on the left and right sides through the left connecting rod and the right connecting rod, thereby driving the left and right screws connected to each other, so that during the up and down movement of the crossbeam, the left and right connecting rods are easily bent by the torque. When the bending is serious, the gear coupling and the shaft will fall off, causing the left and right screws to be out of sync, resulting in the tilting of the crossbeam during the rising process. In order to prevent the left and right connecting rods from bending under force, the utility model designs two intermediate shaft seats, and copper sleeves or bearings are arranged in the intermediate shaft seats to support the left and right screws to prevent the shaft from bending. The specific plan is as follows:
[0011] The first solution is: a first intermediate shaft seat is provided on the top beam of the double-column vertical lathe, a first copper sleeve is provided in the first intermediate shaft seat, and the left connecting rod is movably inserted into the first copper sleeve; a second intermediate shaft seat is provided on the top beam of the double-column vertical lathe, a second copper sleeve is provided in the second intermediate shaft seat, and the right connecting rod is movably inserted into the second copper sleeve. The first copper sleeve is sleeved on the middle part of the left connecting rod, and the second copper sleeve is sleeved on the middle part of the right connecting rod.
[0012] The second solution is: a first intermediate shaft seat is provided on the top beam of the double-column vertical lathe, a first bearing is provided in the first intermediate shaft seat, and the left connecting rod is inserted into the first bearing; a second intermediate shaft seat is provided on the top beam of the double-column vertical lathe, a second bearing is provided in the second intermediate shaft seat, and the right connecting rod is inserted into the second bearing. The first bearing is sleeved in the middle of the left connecting rod, and the second bearing is sleeved in the middle of the right connecting rod.
[0013] During use, the left screw and the left nut structure, as well as the right screw and the right nut structure, need to be lubricated regularly to ensure the smoothness of the spiral transmission operation, and also to avoid the problem of the crossbeam tilting and moving up and down due to the jamming of the spiral transmission. In view of the lubrication problem, the utility model is provided with a first timed centralized lubrication pump for timed lubrication of the left screw at the top of the left column of the double-column vertical lathe, and a second timed centralized lubrication pump for timed lubrication of the right screw at the top of the right column of the double-column vertical lathe. By setting the time of the first timed centralized lubrication pump and the second timed centralized lubrication pump, it is possible to spray lubricating oil on the left screw and the right screw at certain intervals, and the lubricating oil flows from top to bottom along the spiral groove of the left screw and the spiral groove of the right screw, thereby lubricating the entire left screw and the entire right screw. In addition, in addition to the lubricating effect, the lubricating oil ensures the smoothness of the up and down movement of the crossbeam and can also reduce the load of the gear coupling.
[0014] Furthermore, in the aforementioned double-column vertical lathe crossbeam left and right screw synchronous drive monitoring and control device, the thread profiles of the left screw and the right screw are preferably trapezoidal threads.
[0015] The beneficial effects of the utility model are: first, when the tooth meshing coupling and the shaft fall off and make the left screw and the right screw unsynchronized, the double-shaft AC motor is ensured to stop running immediately, avoiding accidents caused by the tilting and up and down movement of the crossbeam; second, the left connecting rod and the right connecting rod are supported by the first intermediate shaft seat and the second intermediate shaft seat to prevent the left connecting rod and the right connecting rod from bending, and also reduce the probability of the tooth meshing coupling and the shaft falling off; third, the left screw and the right screw are lubricated regularly by the first timed centralized lubrication pump and the second timed centralized lubrication pump to ensure the smoothness of the up and down movement of the crossbeam, and also can further reduce the probability of the tooth meshing coupling and the shaft falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a partial structural schematic diagram of the left and right screw rod synchronous drive monitoring and control device of the double-column vertical lathe cross beam described in the utility model.
[0017] Figure 2 yes Figure 1 Schematic diagram of the local structure from a top-down perspective.
[0018] Figure 3 yes Figure 2 Schematic diagram of the local enlarged structure of part A.
[0019] Figure 4 yes Figure 3 The middle right view is a schematic diagram of the structure of the steering gear.
[0020] Figure 5 yes Figure 2Schematic diagram of the local enlarged structure of part B. DETAILED DESCRIPTION
[0021] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0022] The double-column vertical lathes currently seen, such as Figure 1 and Figure 2 As shown, the structure in which the cross beam 1 on the double-column vertical lathe can move up and down is as follows: a left slide rail is vertically arranged on the left column 2 of the double-column vertical lathe, and a right slide rail is vertically arranged on the right column 3 of the double-column vertical lathe, the cross beam 1 is arranged on the left slide rail and the right slide rail through a slider group, and the cross beam 1 can move up and down along the left slide rail and the right slide rail under the drive of a driving device.
[0023] The structure of the driving device is as follows: a double-shaft AC motor 5 is fixedly installed in the middle of the top beam 4 of the double-column vertical lathe, a left worm gear box 6 is arranged on the top of the left column 2 of the double-column vertical lathe, and a right worm gear box 7 is arranged on the top of the right column 3 of the double-column vertical lathe. The left motor shaft and the right motor shaft of the double-shaft AC motor 5, the input shaft of the left worm gear box 6, and the input shaft of the right worm gear box 7 are on the same axis. The left end of the left connecting rod 8 is connected to the input shaft of the left worm gear box 6 through the first gear coupling 9, the right end of the left connecting rod 8 is connected to the left motor shaft of the double-shaft AC motor 5 through the second gear coupling 10, the left end of the right connecting rod 11 is connected to the right motor shaft of the double-shaft AC motor 5 through the third gear coupling 12, and the right end of the right connecting rod 11 is connected to the input shaft of the right worm gear box 7 through the fourth gear coupling 13. The top of the left lead screw 14 vertically supported on the left column 2 by the first bearing group extends into the left worm gear box 6 and meshes with the worm gear in the left worm gear box 6. The top of the right lead screw 15 vertically supported on the right column 3 by the second bearing group extends into the right worm gear box 7 and meshes with the worm gear in the right worm gear box 7. A left nut structure screwed on the left lead screw 14 and a right nut structure screwed on the right lead screw 15 are provided on the cross beam 1. At this time, the left lead screw 14 and the left nut structure on the cross beam 1 constitute a helical transmission of the rod turning to the mother shift, and the right lead screw 15 and the right nut structure on the cross beam 1 also constitute a helical transmission of the rod turning to the mother shift, and it is necessary to ensure that the left nut structure and the right nut structure can move synchronously in the same direction when the double-output shaft AC motor 5 is running, so that the cross beam 1 can be ensured to move up and down smoothly without deflection due to the helical transmission.
[0024] This embodiment is an improvement on the above-mentioned original double-column vertical lathe, and two sets of gear discs and two contactless switches are added: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a left toothed disc 16 is fixedly arranged on the input shaft of the left worm gear box 6, and a left contactless switch 17 is fixedly installed on the left worm gear box 6, and the left contactless switch 17 is aligned with the circumferential surface of the left toothed disc 16. A right toothed disc 18 is fixedly arranged on the input shaft of the right worm gear box 7, and a right contactless switch 19 is fixedly installed on the right worm gear box 7, and the right contactless switch 19 is aligned with the circumferential surface of the right toothed disc 18. The signal line of the left contactless switch 17, the signal line of the right contactless switch 19, and the control signal line of the double-output shaft AC motor 5 are all connected to the control system, and the control system can judge and process the signals monitored by the left contactless switch 17 and the right contactless switch 19 to control the opening and closing of the double-output shaft AC motor 5.
[0025] like Figure 1 and Figure 2 As shown, a first intermediate shaft seat 20 is provided on the top beam 4 of the double-column vertical lathe, a first copper sleeve or a first bearing is provided in the first intermediate shaft seat 20, and the left connecting rod 8 is inserted into the first copper sleeve or the first bearing. A second intermediate shaft seat 21 is provided on the top beam of the double-column vertical lathe, a second copper sleeve or a second bearing is provided in the second intermediate shaft seat 21, and the right connecting rod 11 is inserted into the second copper sleeve or the second bearing.
[0026] Among them, a more preferred solution is: the first copper sleeve or the first bearing is sleeved on the middle part of the left connecting rod 8, and the second copper sleeve or the second bearing is sleeved on the middle part of the right connecting rod 11.
[0027] like Figure 2 As shown, a first timed centralized lubrication pump 22 for timed lubrication of the left screw 14 is provided on the top of the left column 2 of the double-column vertical lathe, and a second timed centralized lubrication pump 23 for timed lubrication of the right screw 15 is provided on the top of the right column 3 of the double-column vertical lathe. The thread profiles of the left screw 14 and the right screw 15 are preferably trapezoidal threads; the first timed centralized lubrication pump 22 and the second timed centralized lubrication pump 23 can be purchased directly, and the time is set according to the actual timing requirements when used.
[0028] The above structure has the following advantages: first, when the tooth-engaging coupling and the shaft fall off and make the left screw 14 and the right screw 15 out of synchronization, the double-shaft AC motor 5 is ensured to stop running immediately, avoiding accidents caused by the tilting and up and down movement of the beam 1; second, the left connecting rod 8 and the right connecting rod 11 are supported by the first intermediate shaft seat 20 and the second intermediate shaft seat 21 to prevent the left connecting rod 8 and the right connecting rod 11 from bending, and the probability of the tooth-engaging coupling and the shaft falling off can also be reduced; third, the left screw 14 and the right screw 15 are lubricated regularly by the first timed centralized lubrication pump 22 and the second timed centralized lubrication pump 23 to ensure the smoothness of the up and down movement of the beam 1, and the probability of the tooth-engaging coupling and the shaft falling off can also be further reduced.
[0029] The above description is only a preferred embodiment of the present invention and does not constitute any other limitation on the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.
Claims
1. A monitoring and control device for synchronously driving the left and right screw rods of the double-column vertical lathe crossbeam. A left slide rail is vertically arranged on the left column of the double-column vertical lathe, and a right slide rail is vertically arranged on the right column of the double-column vertical lathe. The crossbeam is arranged on the left slide rail and the right slide rail through a slider group, and the crossbeam can move up and down along the left slide rail and the right slide rail under the drive of the driving device; The structure of the driving device is as follows: a double-output shaft AC motor is fixedly installed in the middle of the top beam of the double-column vertical lathe, a left worm gear box is arranged on the top of the left column of the double-column vertical lathe, and a right turbine worm gear box is arranged on the top of the right column of the double-column vertical lathe. The left motor shaft and the right motor shaft of the double-output shaft AC motor, the input shaft of the left worm gear box, and the input shaft of the right turbine worm gear box are on the same axis; the left end of the left connecting rod is connected to the input shaft of the left worm gear box through a first gear meshing coupling, the right end of the left connecting rod is connected to the left motor shaft of the double-output shaft AC motor through a second gear meshing coupling, and the left end of the right connecting rod is connected to the left motor shaft of the double-output shaft AC motor through a third gear meshing coupling. The shaft is connected to the right motor shaft of the double-output shaft AC motor, and the right end of the right connecting rod is connected to the input shaft of the right worm gear box through the fourth gear meshing coupling; the top of the left lead screw vertically supported on the left column through the first bearing group extends into the left worm gear box and meshes with the worm gear in the left worm gear box, and the top of the right lead screw vertically supported on the right column through the second bearing group extends into the right worm gear box and meshes with the worm gear in the right worm gear box; a left nut structure screwed on the left lead screw and a right nut structure screwed on the right lead screw are arranged on the crossbeam; when the double-output shaft AC motor is running, the left nut structure and the right nut structure can move synchronously in the same direction; Features: A left gear disc is fixedly arranged on the input shaft of the left turbine worm gear box, and a left contactless switch is fixedly mounted on the left worm gear box, and the left contactless switch is aligned with the circumferential surface of the left gear disc; a right gear disc is fixedly arranged on the input shaft of the right turbine worm gear box, and a right contactless switch is fixedly mounted on the right worm gear box, and the right contactless switch is aligned with the circumferential surface of the right gear disc; the signal line of the left contactless switch, the signal line of the right contactless switch, and the control signal line of the double-output shaft AC motor are all connected to the control system.
2. The device for monitoring and controlling the synchronous drive of the left and right screw rods of the double-column vertical lathe cross beam according to claim 1 is characterized in that: A first intermediate shaft seat is arranged on the top beam of the double-column vertical lathe, a first copper sleeve is arranged in the first intermediate shaft seat, and a left connecting rod is movably inserted in the first copper sleeve; a second intermediate shaft seat is arranged on the top beam of the double-column vertical lathe, a second copper sleeve is arranged in the second intermediate shaft seat, and a right connecting rod is movably inserted in the second copper sleeve.
3. The device for monitoring and controlling the synchronous drive of the left and right screw rods of the double-column vertical lathe cross beam according to claim 2 is characterized in that: The first copper sleeve is sleeved on the middle part of the left connecting rod, and the second copper sleeve is sleeved on the middle part of the right connecting rod.
4. The device for monitoring and controlling the synchronous drive of the left and right screw rods of the double-column vertical lathe cross beam according to claim 1 is characterized in that: A first intermediate shaft seat is arranged on the top beam of the double-column vertical lathe, a first bearing is arranged in the first intermediate shaft seat, and a left connecting rod is inserted into the first bearing; a second intermediate shaft seat is arranged on the top beam of the double-column vertical lathe, a second bearing is arranged in the second intermediate shaft seat, and a right connecting rod is inserted into the second bearing.
5. The device for monitoring and controlling the synchronous drive of the left and right screw rods of the double-column vertical lathe cross beam according to claim 4 is characterized in that: The first bearing is sleeved on the middle part of the left connecting rod, and the second bearing is sleeved on the middle part of the right connecting rod.
6. The device for monitoring and controlling synchronous drive of left and right screw rods of a double-column vertical lathe cross beam according to claim 1, 2 or 4, characterized in that: A first timed centralized lubrication pump for lubricating the left screw rod is arranged on the top of the left column of the double-column vertical lathe, and a second timed centralized lubrication pump for lubricating the right screw rod is arranged on the top of the right column of the double-column vertical lathe.
7. The device for monitoring and controlling the synchronous drive of the left and right screw rods of the double-column vertical lathe cross beam according to claim 1 is characterized in that: The thread profiles of the left screw rod and the right screw rod are both trapezoidal threads.