Lifting and leveling mechanism for movable beam of planogrinder

Abstract

The movable beam lifting and leveling mechanism comprises a portal frame, a movable beam, lead screws and a driving worm gear, a grinding head of the planogrinder is installed on the movable beam, and the lead screws are vertically and rotationally connected to the left side and the right side of the portal frame; the lifting leveling mechanism further comprises a power adjusting mechanism, a horizontal ruler installed on the movable beam, two rotating shafts horizontally and coaxially arranged on the upper side of the portal frame and a servo system driving the two rotating shafts to rotate synchronously through a transmission structure, and the ends of the rotating shafts are fixedly connected with driving worms matched with the driving worm gears. The power adjusting mechanism is in transmission connection with at least one rotating shaft through the speed reducing mechanism, and the power adjusting mechanism is used for driving one rotating shaft to move axially or driving the two rotating shafts to rotate oppositely, so that the movable beam is horizontal. According to the lifting and leveling mechanism for the movable beam of the planogrinder, the number of servo systems is reduced, the inclination degree of the movable beam in the lifting process is reduced, and meanwhile the power adjusting mechanism is arranged to guarantee the levelness of the movable beam.

Description

Technical Field

[0001] The invention relates to the technical field of gantry grinders, in particular to a movable beam lifting and leveling mechanism for gantry grinders. Background Art

[0002] The gantry grinder is used to process large workpieces. As shown in the patent with application number CN202023301939.1, it includes a gantry, a moving beam, a grinding head and a lifting mechanism. The moving beam is arranged horizontally, and the two ends are slidably connected to the left and right sides of the gantry. The height of the moving beam is adjusted by the lifting mechanism. The grinding head is installed on the moving beam and can move along the beam to process the workpiece. The existing lifting mechanism includes two servo systems arranged on the left and right ends of the upper side of the gantry. The servo system is connected to a screw rod extending downward, and the screw rod is threadedly connected to the end of the moving beam. When adjusting the height of the moving beam, the two servo systems synchronously drive the screw rod to rotate, and the two ends of the moving beam move up or down synchronously to adjust the height of the moving beam.

[0003] The lifting mechanism of the existing grinding machine adopts two sets of servo systems. On the one hand, the cost is relatively high. On the other hand, when the left and right servo systems are working, the movement speed needs to be highly synchronized so that the left and right ends of the moving beam can be lifted and lowered synchronously. If the speed difference between the left and right servo systems is large, the moving beam will produce a large tilt. In severe cases, the connection between the end of the moving beam and the screw rod may be damaged. Summary of the invention

[0004] In order to solve the shortcomings of the existing grinding machine's lifting mechanism being relatively high in cost and the movable beam being prone to significant tilt during lifting, the present invention proposes a gantry grinder movable beam lifting and leveling mechanism, which reduces the number of servo systems and reduces the degree of tilt during lifting of the movable beam. At the same time, a power adjustment mechanism is provided to ensure the horizontality of the movable beam.

[0005] To achieve the above object, the present invention adopts the following technical solution: A lifting and leveling mechanism for a movable beam of a gantry grinder comprises a gantry, a movable beam, a screw and a driving worm gear, wherein a grinding head of the gantry grinder is mounted on the movable beam, screws are connected for vertical rotation on the left and right sides of the gantry, two ends of the movable beam are threadedly connected to the corresponding screws and are in a horizontal state, and the driving worm gear is fixedly connected to the upper end of the screw; the lifting and leveling mechanism also comprises a power adjustment mechanism, a level mounted on the movable beam, two horizontal coaxial rotating shafts arranged on the upper side of the gantry, and a servo system for driving the two rotating shafts to rotate synchronously through a transmission structure, a driving worm matched with the driving worm gear is fixedly connected to the end of the rotating shaft, the power adjustment mechanism is connected to at least one rotating shaft through a reduction mechanism, and the power adjustment mechanism is used to drive one of the rotating shafts to move axially, or drive the two rotating shafts to rotate in opposite directions, so as to make the movable beam level.

[0006] Through the above arrangement, firstly, a servo system drives the two rotating shafts to rotate synchronously through the transmission structure, which reduces the cost, and at the same time, the two ends of the moving beam move up and down basically synchronously, preventing the moving beam from tilting too much during lifting; secondly, after the servo system stops, the power adjustment mechanism can drive the rotating shaft to further level the moving beam and eliminate the height difference between the two ends of the moving beam; thirdly, the deceleration mechanism reduces the driving speed of the power adjustment mechanism and improves the adjustment accuracy of the power adjustment mechanism.

[0007] Furthermore, one of the rotating shafts is a driving shaft axially fixed on the gantry, a slot is provided at the end of the driving shaft, a slide groove parallel to the axis of the driving shaft is provided on the side of the slot, and the servo system is connected to the driving shaft in a transmission manner; the other rotating shaft is a driven shaft that can move axially on the gantry, the end of the driven shaft is inserted into the slot and is slidably connected to the slot, the transmission structure is configured as a fixed key fixedly connected to the end of the driven shaft, and the fixed key is slidably connected in the slide groove; the power adjustment mechanism is connected to the driven shaft in a transmission manner through a reduction mechanism to drive the driven shaft to move axially.

[0008] Through the above arrangement, the driving shaft drives the driven shaft to rotate synchronously through the fixed key, and at the same time, the axial movement of the driven shaft is not hindered so as to level the moving beam.

[0009] Furthermore, the servo system includes a first servo motor, a first driving pulley, a first transmission belt, and a first driven pulley. The first servo motor is fixedly connected to the gantry and connected to the first driving pulley. The first driven pulley is coaxially installed on the driving shaft and is connected to the driving pulley through the first transmission belt.

[0010] Through the above arrangement, the servo system drives the driving shaft to rotate through the first servo motor, the first driving pulley, the first transmission belt and the first driven pulley.

[0011] Furthermore, the lifting and leveling mechanism also includes a stabilizing seat fixedly connected to the upper side of the gantry, and the driving shaft passes through the stabilizing seat and is rotatably connected to the stabilizing seat through a bearing.

[0012] Through the above arrangement, the stabilizing seat increases the rotational stability of the driving shaft, while the bearing can reduce the rotational resistance of the driving shaft, thereby further improving the rotational stability of the driving shaft.

[0013] Furthermore, the lifting and leveling mechanism also includes a support seat and a sliding seat. The support seat is close to the end of the driven shaft away from the driving shaft and is fixedly connected to the upper side of the gantry. A first mounting groove is arranged in the support seat. The sliding seat is slidably connected in the first mounting groove. A second mounting groove is arranged in the sliding seat. The driving worm of the driven shaft is rotatably connected in the second mounting groove and is axially fixed. Avoidance openings are arranged on the support seat and the sliding seat. The driving worm wheel extends into the second mounting groove through the avoidance opening and cooperates with the driving worm. The power adjustment mechanism is transmission-connected to the sliding seat through a reduction mechanism.

[0014] Through the above arrangement, the support seat and the sliding seat are used to support the end of the driven shaft so that the end of the driven shaft can rotate stably. At the same time, the driven shaft is axially fixed in the sliding seat, and the power adjustment mechanism drives the driven shaft to move axially through the sliding seat.

[0015] Furthermore, the power adjustment mechanism includes a first motor fixedly connected to the outside of the support seat, the reduction mechanism includes a screw rod arranged parallel or coaxially with the driven shaft, the screw rod is threadedly connected to the sliding seat, and the first motor can drive the screw rod to rotate.

[0016] Through the above arrangement, the power adjustment mechanism drives the driven shaft to move axially through the first motor, the screw rod and the sliding seat.

[0017] Furthermore, the transmission structure includes a housing, a first bevel gear, a second bevel gear and a self-locking worm gear. The housing is arranged between two rotating shafts, and the end of the rotating shaft extends into the housing and is fixedly connected to the housing. The first bevel gear is fixedly connected to one end of the two rotating shafts close to the housing. The second bevel gear is rotatably connected in the housing and meshes between the first bevel gears. The self-locking worm gear is fixedly connected to the second bevel gear; the servo system includes a second servo motor, a second driving pulley, a second driven pulley and a second transmission belt. The second servo motor is fixedly connected to the gantry and connected to the second driving pulley. The left and right sides of the housing are fixedly connected with the second driven pulley, and the second driven pulley is transmission-connected to the second driving pulley through the second transmission belt; the reduction mechanism is arranged as a reduction worm rotatably connected in the housing, the reduction worm cooperates with the self-locking worm gear, and the power adjustment mechanism is arranged as a second motor fixedly mounted outside the housing, and the second motor is transmission-connected to the reduction worm.

[0018] Through the above arrangement, the lifting and leveling of the movable beam can be achieved only by rotating the shaft, and the shaft does not need to move axially, thereby reducing the freedom of movement of the shaft, thereby preventing the shaft from loosening and improving the stability of the movable beam.

[0019] Furthermore, a plurality of second bevel gears are provided and arranged in a ring array around the axis of the first bevel gear in the housing, and the self-locking worm gear is fixedly connected to one of the second bevel gears.

[0020] Through the above arrangement, the wear between the second bevel gear and the first bevel gear is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial schematic diagram of a gantry grinder according to an embodiment.

[0022] Figure 2 It is a top view of the gantry grinder of the embodiment.

[0023] Figure 3 for Figure 1 AA section view.

[0024] Figure 4 for Figure 2 BB cross-sectional view.

[0025] Figure 5 It is a schematic diagram of another form of the gantry grinder of the embodiment.

[0026] Figure 6 for Figure 5 CC cross-sectional view. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0028] like Figures 1 to 6 As shown, a lifting and leveling mechanism for a movable beam of a gantry grinder comprises a gantry frame 3, a movable beam 4, a screw 5 and a driving worm gear 6, a grinding head 7 of the gantry grinder is installed on the movable beam 4, screws 5 are connected to the left and right sides of the gantry frame 3 for vertical rotation, two ends of the movable beam 4 are threadedly connected to the corresponding screws 5 and are in a horizontal state, and the driving worm gear 6 is fixedly connected to the upper end of the screw 5; the lifting and leveling mechanism also includes a power adjustment mechanism, a level ruler 8 installed on the movable beam 4, two horizontal coaxial rotating shafts 9 arranged on the upper side of the gantry frame 3, and a servo system for driving the two rotating shafts 9 to rotate synchronously through a transmission structure, a driving worm 10 matched with the driving worm gear 6 is fixedly connected to the end of the rotating shaft 9, the power adjustment mechanism is connected to at least one rotating shaft 9 through a reduction mechanism, and the power adjustment mechanism is used to drive one of the rotating shafts 9 to move axially, or drive the two rotating shafts 9 to rotate in opposite directions, so as to make the movable beam 4 horizontal.

[0029] Through the above arrangement, firstly, a set of servo system synchronously drives the two rotating shafts 9 to rotate through the transmission structure, which reduces the cost, and at the same time, the two ends of the movable beam 4 move up and down basically synchronously, preventing the movable beam 4 from tilting too much during lifting; secondly, after the servo system stops, the power adjustment mechanism can drive the rotating shaft 9 to further level the movable beam 4 and eliminate the height difference between the two ends of the movable beam 4; thirdly, the deceleration mechanism reduces the driving speed of the power adjustment mechanism and improves the adjustment accuracy of the power adjustment mechanism.

[0030] The gantry 3 of the present application is a gate-shaped structure, including a horizontal crossbeam on the upper side, and vertical columns fixedly connected to the left and right ends of the crossbeam, a movable beam 4 is horizontally arranged on the lower side of the crossbeam, and the two ends of the movable beam 4 are slidably connected to the columns, a screw rod 5 is vertically rotatably connected to the side of the column, and is threadedly connected to the end of the movable beam 4; the upper ends of the screw rods 5 are coaxially fixedly connected to one of the above-mentioned driving worm gears 6; each driving worm gear 6 corresponds to a driving worm 10 and a rotating shaft 9, and the screw rod 5 structure and the worm gear structure both have self-locking characteristics. When the rotating shaft 9 stops, the movable beam 4 is locked, thereby ensuring the stability of the grinding head 7 of the gantry grinder when processing workpieces.

[0031] The gantry grinder of the present application is used for machining large workpieces. The self - contained grinding head 7 has high - precision lifting and the function of lateral movement along the moving beam 4, so as to grind the workpiece up, down, left and right; the lifting and leveling mechanism has the functions of lifting and leveling. The lifting function is used to lift the moving beam 4 and the grinding head 7 to a height suitable for the workpiece to be machined, and the leveling function is used to further level the moving beam 4 after lifting, so as to increase the horizontality of the lateral movement of the grinding head 7, thereby improving the machining accuracy; during specific machining, the servo system drives the rotation of two rotating shafts 9 synchronously through the transmission structure. The rotating shafts 9 drive the driving worm 10, the driving worm wheel 6 and the lead screw 5, and drive the moving beam 4 to move up or down until the moving beam 4 moves to an appropriate height. Among them, the height of the moving beam 4 can be controlled by the grating ruler. The present application uses a set of servo system to synchronously control the rotation of two rotating shafts 9, which is different from the traditional gantry grinder, avoiding the large inclination of the moving beam 4 caused by the too large speed difference between the left and right lead screws 5, making the control simpler and reducing the equipment cost; in actual machining, after the moving beam 4 stops moving, there is still a slight height difference at both ends. That is, a very small inclination angle of the moving beam 4 can still be measured by the spirit level 8, which cannot be observed by the naked eye, and this will also affect the machining accuracy; at this time, the power adjustment mechanism uses two schemes to further level the moving beam 4; the first one is that when the power adjustment mechanism drives the axial movement of one of the rotating shafts 9 through the reduction mechanism. For example, when the power adjustment mechanism drives the left rotating shaft 9 to move axially, the left driving worm 10 moves synchronously with the rotating shaft 9. The driving worm 10 is similar to the principle of a rack and pinion, drives the left lead screw 5 to rotate through the driving worm wheel 6, so that the left end of the moving beam 4 moves up or down. The horizontality of the moving beam 4 is detected by the spirit level 8. After the moving beam 4 is level, the power adjustment mechanism stops moving; the second one is that the power adjustment mechanism drives the two rotating shafts 9 to rotate in opposite directions through the reduction mechanism. At this time, the left and right lead screws 5 rotate in opposite directions, and the left and right ends of the moving beam 4 move in opposite directions until the moving beam 4 is level; the reduction mechanism in the present application reduces the driving speed of the power adjustment mechanism, making the speed of the power adjustment mechanism to level the moving beam 4 very slow, playing a fine - tuning role. The horizontality of the moving beam 4 is easier to control, and the accuracy requirement of the power adjustment mechanism is lower, further reducing the equipment cost. It should be noted that the grinding head 7 of the present application has a high - precision lifting function. In the actual equipment, the up - and - down floating range of the grinding head 7 is about 200mm. The machining height accuracy of the grinding head 7 can be guaranteed by its own lifting function. The height control accuracy of the moving beam 4 itself does not need to be very high, mainly to ensure the horizontality to ensure the machining accuracy of the grinding head 7. The actual up - and - down floating range of the moving beam 4 is much larger than the up - and - down floating range of the grinding head 7, mainly used to roughly lift the grinding head 7 above the large workpiece for machining. That is, for workpieces with a higher height, the height of the moving beam 4 is increased accordingly, and for workpieces with a lower height, the height of the moving beam 4 is decreased accordingly.

[0032] Such as Figures 1 to 4As shown, as an implementation method, one of the rotating shafts 9 is a driving shaft axially fixed on the gantry 3, a slot 11 is provided at the end of the driving shaft, a slide groove 12 parallel to the axis of the driving shaft is provided on the side of the slot 11, and the servo system is connected to the driving shaft in a transmission manner; the other rotating shaft 9 is a driven shaft that can move axially on the gantry 3, the end of the driven shaft is inserted into the slot 11 and is slidably connected to the slot 11, the transmission structure is provided with a fixed key 13 fixedly connected to the end of the driven shaft, and the fixed key 13 is slidably connected in the slide groove 12; the power adjustment mechanism is connected to the driven shaft in a transmission manner through a reduction mechanism to drive the driven shaft to move axially.

[0033] Through the above arrangement, the driving shaft drives the driven shaft to rotate synchronously through the fixed key 13, and at the same time, the axial movement of the driven shaft is not hindered so as to level the moving beam 4.

[0034] The driving shaft of the present application is axially fixed on the gantry 3, that is, the driving shaft can only rotate around the axis and will not move axially, and the driven shaft can rotate with the driving shaft under the action of the fixed key 13, and can also move axially on the gantry 3. When the driven shaft moves axially, the fixed key 13 slides in the slide groove 12; specifically, when the servo system drives the driving shaft to rotate around the axis, the fixed key 13 is transmitted to make the driving shaft and the driven shaft rotate synchronously, ensuring that the left and right side screws 5 rotate at the same speed; after the servo system stops, the power adjustment mechanism drives the driven shaft to approach or move away from the driving shaft, and drives one side of the screw 5 to rotate by driving the worm 10 and the driving worm wheel 6 to adjust the height of one end of the moving beam 4, so that the heights of the two ends of the moving beam 4 are unified.

[0035] As an implementation method, the servo system includes a first servo motor 14, a first driving pulley 15, a first transmission belt 16, and a first driven pulley 17. The first servo motor 14 is fixedly connected to the gantry 3 and connected to the first driving pulley 15. The first driven pulley 17 is coaxially installed on the driving shaft and is connected to the driving pulley through the first transmission belt 16.

[0036] Through the above arrangement, the servo system drives the driving shaft to rotate through the first servo motor 14 , the first driving pulley 15 , the first transmission belt 16 and the first driven pulley 17 .

[0037] The present application adopts the first servo motor 14 , which has high motion accuracy and can make the height control accuracy of the moving beam 4 reach the millimeter level.

[0038] As an implementation method, the lifting and leveling mechanism also includes a stabilizing seat 18 fixedly connected to the upper side of the gantry 3 , the driving shaft passes through the stabilizing seat 18 , and is rotatably connected to the stabilizing seat 18 via a bearing 19 .

[0039] Through the above arrangement, the stabilizing seat 18 increases the rotation stability of the driving shaft, and the bearing can reduce the rotation resistance of the driving shaft, further improving the rotation stability of the driving shaft.

[0040] As an implementation method, the lifting and leveling mechanism also includes a support seat 20 and a sliding seat 21. The support seat 20 is close to the end of the driven shaft away from the driving shaft and is fixedly connected to the upper side of the gantry 3. A first mounting groove 22 is arranged in the support seat 20. The sliding seat 21 is slidably connected in the first mounting groove 22. A second mounting groove 23 is arranged in the sliding seat 21. The driving worm 10 of the driven shaft is rotatably connected in the second mounting groove 23 and axially fixed. Avoidance openings 24 are arranged on the support seat 20 and the sliding seat 21. The driving worm wheel 6 extends into the second mounting groove 23 through the avoidance opening 24 and cooperates with the driving worm 10. The power adjustment mechanism is transmission-connected to the sliding seat 21 through a reduction mechanism.

[0041] Through the above arrangement, the support seat 20 and the sliding seat 21 are used to support the end of the driven shaft so that the end of the driven shaft can rotate stably. At the same time, the driven shaft is axially fixed in the sliding seat 21, and the power adjustment mechanism drives the driven shaft to move axially through the sliding seat 21.

[0042] As an implementation method, the power adjustment mechanism includes a first motor 25 fixedly connected to the outside of the support seat 20, and the reduction mechanism includes a screw 26 arranged parallel or coaxially with the driven shaft. The screw 26 is threadedly connected to the sliding seat 21, and the first motor 25 can drive the screw 26 to rotate.

[0043] Through the above arrangement, the power adjustment mechanism drives the driven shaft to move axially through the first motor 25 , the screw rod 26 and the sliding seat 21 .

[0044] When the first motor 25 of the present application drives the screw 26 to rotate around the axis, the screw 26 and the sliding seat 21 rotate relative to each other, and the sliding seat 21 drives the driven shaft to move axially. The screw 26 has a self-locking function. After stopping rotation, the sliding seat 21 and the driven shaft will not move axially, further improving the stability of the moving beam 4. Moreover, the screw 26 plays a deceleration role. The first motor 25 can use an ordinary motor with lower precision to adjust the moving beam 4 to a level.

[0045] In the first leveling method, that is, when leveling by axial movement of the driven shaft, the fixed key 13 and the slide groove 12 will slide relative to each other. In addition, an axial force will be generated between the sliding seat 21 and the end of the driven shaft. Over time, the fixed key 13 is prone to wear and a gap will be generated between the slide groove 12, or an axial gap will be generated between the sliding seat 21 and the driven shaft, thereby increasing the instability and error of the movement of the moving beam 4. Therefore, the following implementation method is proposed: Figures 5 to 6As shown in the figure, the transmission structure includes a housing 27, a first bevel gear 28, a second bevel gear 29, and a self-locking worm gear 30. The housing 27 is disposed between two rotating shafts 9. The ends of the rotating shafts 9 extend into the housing 27 and are fixedly connected to the housing 27. A first bevel gear 28 is fixedly connected to one end of each of the two rotating shafts 9 close to the housing 27. The second bevel gear 29 is rotatably connected in the housing 27 and meshes between the first bevel gears 28. The self-locking worm gear 30 is fixedly connected to the second bevel gear 29. The servo system includes a second servo motor 31, a second driving pulley 32, a second driven pulley 33, and a second transmission belt 34. The second servo motor 31 is fixedly connected to the gantry 3 and is connected to the second driving pulley 32. Second driven pulleys 33 are fixedly connected to both the left and right sides of the housing 27. The second driven pulleys 33 are drivingly connected to the second driving pulley 32 through the second transmission belt 34. The speed reduction mechanism is a reduction worm 35 rotatably connected in the housing 27. The reduction worm 35 cooperates with the self-locking worm gear 30. The power adjustment mechanism is a second motor 36 fixedly installed outside the housing 27. The second motor 36 is drivingly connected to the reduction worm 35.

[0046] With the above arrangement, the lifting and leveling of the moving beam 4 are achieved only by the rotation of the rotating shafts 9, and the rotating shafts 9 do not need to move axially, reducing the degrees of freedom of movement of the rotating shafts 9, thereby preventing the rotating shafts 9 from loosening and further improving the stability of the moving beam 4.

[0047] The reduction worm 35 and the self-locking worm gear 30 of the present application have the functions of self-locking and speed reduction. When the second motor 36 does not work, the self-locking worm gear 30 and the second bevel gear 29 are locked. When the second servo motor 31 of the servo system drives the housing 27 to move through the second driving pulley 32, the second transmission belt 34, and the second driven pulley 33, the housing 27 drives the two rotating shafts 9 on its left and right sides to rotate synchronously through the second bevel gear 29 and the first bevel gear 28, thereby driving the moving beam 4 to lift. In the present application, the second motor 36 is energized through a slip ring, so that the second motor 36 on the housing 27 is always energized. After the servo system stops working, the second motor 36 drives the second bevel gear 29 to rotate through the reduction worm 35 and the self-locking worm gear 30. The second bevel gear 29 drives the rotating shafts 9 on the left and right sides to rotate in opposite directions through the first bevel gears 28 on the opposite sides, so that the left and right ends of the moving beam 4 move in opposite directions, and finally the moving beam 4 is leveled.

[0048] As an implementation manner, a plurality of second bevel gears 29 are provided and are arranged in a circumferential array around the axis of the first bevel gear 28 in the housing 27. The self-locking worm gear 30 is fixedly connected to one of the second bevel gears 29.

[0049] With the above arrangement, the wear of the second bevel gear 29 and the first bevel gear 28 is reduced.

[0050] In this application, multiple second bevel gears 29 are provided. When the housing 27 synchronously drives two rotating shafts 9 through the second bevel gears 29 and the first bevel gear 28, the stress between the second bevel gear 29 and the first bevel gear 28 is reduced, thereby reducing the wear of the first bevel gear 28 and the second bevel gear 29.

[0051] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A leveling mechanism for the moving beam of a gantry grinding machine, characterized in that, It includes a gantry, a moving beam, a screw and a driving worm gear, the grinding head of the gantry grinder is installed on the moving beam, the screws are vertically rotatably connected on the left and right sides of the gantry, the two ends of the moving beam are threadedly connected to the corresponding screws and are in a horizontal state, and the driving worm gear is fixedly connected to the upper end of the screw; the lifting and leveling mechanism also includes a power adjustment mechanism, a level ruler installed on the moving beam, two horizontal coaxial rotating shafts arranged on the upper side of the gantry, and a servo system that drives the two rotating shafts to rotate synchronously through a transmission structure, the end of the rotating shaft is fixedly connected with a driving worm that cooperates with the driving worm gear, the power adjustment mechanism is connected to at least one of the rotating shafts through a reduction mechanism, and the power adjustment mechanism is used to drive one of the rotating shafts to move axially, or drive the two rotating shafts to rotate in opposite directions, so as to make the moving beam level.

2. The leveling mechanism for the moving beam lifting of a gantry grinding machine according to claim 1, wherein, One of the rotating shafts is a driving shaft axially fixed on the gantry, a slot is provided at the end of the driving shaft, a slide groove parallel to the axis of the driving shaft is provided on the side of the slot, and the servo system is connected to the driving shaft in a transmission manner; the other rotating shaft is a driven shaft that can move axially on the gantry, the end of the driven shaft is inserted into the slot and is slidably connected to the slot, the transmission structure is configured as a fixed key fixedly connected to the end of the driven shaft, and the fixed key is slidably connected in the slide groove; The power adjustment mechanism is drivingly connected to the driven shaft through the speed reduction mechanism to drive the driven shaft to move axially.

3. The leveling mechanism for the moving beam lifting of a gantry grinding machine according to claim 2, characterized in that, The servo system includes a first servo motor, a first driving pulley, a first transmission belt, and a first driven pulley. The first servo motor is fixedly connected to the gantry and connected to the first driving pulley. The first driven pulley is coaxially installed on the driving shaft and is connected to the driving pulley through the first transmission belt.

4. A leveling mechanism for the moving beam of a gantry grinding machine according to claim 2, characterized in that, The lifting and leveling mechanism also includes a stabilizing seat fixedly connected to the upper side of the gantry, and the driving shaft passes through the stabilizing seat and is rotatably connected to the stabilizing seat through a bearing.

5. A leveling mechanism for the moving beam of a gantry grinding machine according to claim 2, characterized in that, The lifting and leveling mechanism also includes a supporting seat and a sliding seat. The supporting seat is close to the end of the driven shaft away from the driving shaft and is fixedly connected to the upper side of the gantry. A first mounting groove is arranged in the supporting seat. The sliding seat is slidably connected in the first mounting groove. A second mounting groove is arranged in the sliding seat. The driving worm of the driven shaft is rotatably connected in the second mounting groove and is axially fixed. Avoidance openings are arranged on the supporting seat and the sliding seat. The driving worm wheel extends into the second mounting groove through the avoidance opening and cooperates with the driving worm. The power adjustment mechanism is transmission-connected to the sliding seat through the reduction mechanism.

6. The leveling mechanism for the moving beam of a gantry grinding machine according to claim 5, characterized in that The power adjustment mechanism includes a first motor fixedly connected to the outer side of the support seat, the reduction mechanism includes a screw rod arranged parallel or coaxially with the driven shaft, the screw rod is threadedly connected to the sliding seat, and the first motor can drive the screw rod to rotate.

7. A leveling mechanism for the moving beam of a gantry grinding machine according to claim 1, characterized in that, The transmission structure includes a housing, a first bevel gear, a second bevel gear, and a self-locking worm gear. The housing is arranged between two rotating shafts. The ends of the rotating shafts extend into the housing and are fixedly connected to the housing. A first bevel gear is fixedly connected to one end of each of the two rotating shafts close to the housing. The second bevel gear is rotatably connected in the housing and meshes between the first bevel gears. The self-locking worm gear is fixedly connected to the second bevel gear; The servo system includes a second servo motor, a second driving pulley, a second driven pulley, and a second transmission belt. The second servo motor is fixedly connected to the gantry and connected to the second driving pulley. The second driven pulley is fixedly connected to both the left and right sides of the housing. The second driven pulley is in transmission connection with the second driving pulley through the second transmission belt; The speed reduction mechanism is arranged as a reduction worm rotatably connected in the housing. The reduction worm cooperates with the self-locking worm gear. The power adjustment mechanism is arranged as a second motor fixedly installed outside the housing. The second motor is in transmission connection with the reduction worm.

8. A leveling mechanism for the moving beam of a gantry grinding machine according to claim 7, characterized in that, A plurality of the second bevel gears are provided and are arranged in a circular array around the axis of the first bevel gear in the housing. The self-locking worm gear is fixedly connected to one of the second bevel gears.

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