Walking driving structure for large cutting machine

Abstract

The utility model relates to the technical field of stone cutting equipment, in particular to a walking driving structure for a large cutting machine, the large cutting machine comprises a cross beam and a rack, the walking driving structure comprises a ratchet wheel assembly, a driving motor and a machine frame, the machine frame is provided with a long-strip-shaped hole, and the machine frame is simultaneously connected with a position adjusting bolt; the long-strip-shaped hole is provided with a detachable connecting assembly, the driving motor is connected to the rack through the detachable connecting assembly, the position adjusting bolt abuts against the driving motor, the rack is provided with a gearbox, the gearbox is provided with a driven wheel and a walking gear, the driving motor is provided with a belt wheel, and the belt wheel and the driven wheel are wound with a belt. After the technical scheme is adopted, when the belt extends but still can be continuously used after being tensioned, the detachable connecting structure is unfastened, then the position adjusting bolt is rotated to adjust the position of the driving motor until the belt is tensioned, and finally the detachable connecting structure is used for fixing the driving motor, so that the transmission efficiency is guaranteed, and the service life of the belt is prolonged. The belt is fully utilized, and the operation process is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of stone cutting equipment, in particular to a travel drive structure for a large stone cutting machine. Background Art

[0002] The large cutting machine is also called a bridge cutting machine or a bridge-type cutting machine. It is a common stone cutting equipment, which usually includes a longitudinal movement assembly. The longitudinal movement assembly includes a crossbeam, and a cross-movement assembly is provided on the crossbeam. The cross-movement assembly is horizontally slidably connected to the crossbeam, and the cutting assembly is vertically slidably connected to the cross-movement assembly. The cross-movement assembly is also equipped with a drive structure for driving the cross-movement assembly to move on the crossbeam. The common drive structure includes a drive motor and a gearbox, and the drive motor and the gearbox are transmitted by a belt.

[0003] However, the drive motor and gearbox are often directly fixed to the transverse movement assembly, and the distance between the drive motor and the gearbox cannot be adjusted; as the use time increases, the belt will often stretch due to factors such as material aging, wear and / or thermal effects, which will cause the belt tension to decrease, and finally cause the transmission efficiency between the drive motor and the gearbox to decrease. A new belt needs to be replaced to ensure the transmission efficiency; often the replaced belt can continue to be used after being tensioned, which makes the belt unable to be fully utilized.

[0004] In view of this, the applicant conducted an in-depth study on the above issues, which led to the present case. Utility Model Content

[0005] The purpose of the utility model is to provide a travel drive structure for a large cutting machine in which a belt can be fully utilized.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A travel drive structure for a large cutting machine, the large cutting machine comprises a crossbeam and a rack mounted on the crossbeam and arranged horizontally, the travel drive structure comprises a ratchet assembly, a drive motor, and a frame horizontally slidably connected to the crossbeam, the frame is provided with an elongated hole, and the frame is simultaneously screwed with an adjusting bolt; the elongated hole is arranged horizontally, and the adjusting bolt is arranged parallel to the elongated hole; the elongated hole is provided with a detachable connecting assembly, and the detachable connecting assembly is slidably connected to the elongated hole in the length direction of the elongated hole; the drive motor is detachably connected to the frame via the detachable connecting assembly; the adjusting bolt abuts against the housing of the drive motor;

[0008] The rack is mounted with a gearbox; an input shaft of the gearbox is mounted with a driven wheel, an output shaft of the gearbox is mounted with a traveling gear engaged with the rack; an axis of an output shaft of the driving motor and an axis of the driven wheel are arranged perpendicularly to an axis of the adjusting bolt, the output shaft of the driving motor is arranged in parallel with the axis of the driven wheel; a belt wheel is mounted on the output shaft of the driving motor, the belt wheel and the driven wheel are wound with a belt;

[0009] The ratchet assembly comprises a ratchet and a pawl matched with the ratchet, the ratchet is coaxially arranged with the adjusting bolt and fixed to a tail end of the adjusting bolt, the pawl is rotationally connected to a housing of the driving motor, a torsion spring is arranged between the pawl and the driving motor for abutting the pawl against the ratchet, and the pawl abuts against the ratchet.

[0010] Preferably, a disengaging lever is further fixed to the pawl.

[0011] Preferably, a conical bushing is further arranged between the output shaft of the driving motor and the belt wheel, the conical bushing is sleeved on the output shaft of the driving motor, a center of the belt wheel is provided with a tapered hole matched with the conical bushing; the belt wheel is sleeved on the conical bushing, a smaller end of the conical bushing is screw-connected with a locking nut, and the locking nut abuts against a side corresponding to the smaller end of the tapered hole of the belt wheel.

[0012] The output shaft of the driving motor is provided with a flat key groove, the conical bushing is provided with a matching groove at a position opposite to the flat key groove, and the same flat key is arranged in the flat key groove and the matching groove.

[0013] Preferably, the detachable connecting assembly is a first bolt assembly, the first bolt assembly comprises a first nut and a first bolt matched with each other, the first bolt comprises a threaded rod and a nut fixed to one end of the threaded rod.

[0014] The driving motor is provided with a first lock hole, and the threaded rod is sequentially passed through the long hole and the first lock hole and screw-connected with the first nut at an end away from the nut.

[0015] An outer contour diameter of the nut is greater than a width of the long hole.

[0016] An outer contour diameter of the first nut is greater than a diameter of the first lock hole.

[0017] Preferably, the first bolt is a hexagonal head bolt, and the first nut is a hexagonal nut.

[0018] An opposite side dimension of the nut is greater than the width of the long hole.

[0019] The opposite side dimension of the first nut is larger than the diameter of the first locking hole.

[0020] By adopting the above technical solution, the beneficial effects of the utility model are:

[0021] When the belt stretches but can still be used after being tightened, the detachable connection structure between the drive motor and the frame is released, and then the adjusting bolt is rotated to adjust the position of the drive motor until the belt is tightened. Finally, the drive motor is fixed with the detachable connection structure, thereby ensuring transmission efficiency and making full use of the belt. The operation process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the travel drive structure for a large cutting machine according to the present invention;

[0023] Figure 2 This is a structural schematic diagram of the travel drive structure for a large cutting machine according to the present invention from another perspective;

[0024] Figure 3 This is a structural diagram of the travel drive structure for a large-scale cutting machine according to the present invention from another perspective;

[0025] Figure 4 This is a schematic cross-sectional view of the travel drive structure of the large-scale cutting machine at the position of the motor shaft of the utility model;

[0026] Figure 5 This is a schematic structural diagram of one of the ratchet assemblies of the present invention.

[0027] In the picture:

[0028] 100-rack; 110-long hole;

[0029] 120-adjusting seat; 121-adjusting bolt;

[0030] 200-driving motor; 210-tapered bushing;

[0031] 220-pulley; 230-locking nut;

[0032] 250-flat key;

[0033] 300-ratchet assembly; 310-ratchet;

[0034] 320- pawl; 321- release lever;

[0035] 400-gearbox; 430-travel gear;

[0036] 440-Passive wheel. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The large cutting machine includes a longitudinal moving assembly and a transverse moving assembly arranged on the longitudinal moving assembly. The transverse moving assembly includes a beam slidably connected to the longitudinal moving assembly and a rack installed on the beam and arranged horizontally, with the length direction of the beam as the left and right direction; the transverse moving assembly is provided with left and right walking drive structures and cutting components installed on the left and right walking drive structures.

[0039] like Figures 1 to 5 As shown, this embodiment provides a walking drive structure for a large cutting machine, including a ratchet assembly 300, a drive motor 200, and a frame 100 horizontally slidably connected to the crossbeam, the frame 100 is provided with a long hole 110, and the frame 100 is also screwed with an adjusting bolt 121. Specifically, an adjusting seat 120 is fixed to the upper end of the frame 100, and an internal threaded through hole is provided on the adjusting seat 120. The hole axis of the internal threaded through hole is arranged parallel to the long hole 110, and the adjusting bolt 121 is screwed with the internal threaded through hole. In this embodiment, there are two adjusting bolts 121, and the adjusting seat 120 is strip-shaped. Two internal threaded through holes are provided on the adjusting seat 120, and the two internal threaded through holes are arranged side by side. The two adjusting bolts 121 are screwed with the two internal threaded through holes in a one-to-one correspondence; the long hole 110 is arranged horizontally, and the adjusting bolt 121 is arranged parallel to the long hole 110.

[0040] The elongated hole 110 is provided with a detachable connecting assembly, which is slidably connected to the elongated hole 110 in the longitudinal direction of the elongated hole 110. The drive motor 200 is detachably connected to the frame 100 via the detachable connecting assembly. In this embodiment, the detachable connecting assembly is a first bolt assembly, and the drive motor 200 is detachably connected to the frame 100 via the first bolt assembly (not shown in the figure). The first bolt assembly includes a first nut and a first bolt that match each other. The first bolt includes a threaded rod and a nut fixed to one end of the threaded rod. A first locking hole is provided on the drive motor 200, and the end of the threaded rod away from the nut passes through the elongated hole 110 and the first locking hole in sequence and is screwed to the first nut. The outer diameter of the nut is greater than the width of the elongated hole 110, and the outer diameter of the first nut is greater than the diameter of the first locking hole. Preferably, the first bolt is a hexagonal head bolt, and the first nut is a hexagonal nut. The opposite side dimension of the nut is greater than the width of the elongated hole 110, and the opposite side dimension of the first nut is greater than the diameter of the first locking hole. The adjusting bolt 121 abuts against the housing of the drive motor 200. Specifically, one end of the adjusting bolt 121 is a head end, and the other end is an abutting tip. The abutting tip of the adjusting bolt 121 abuts against the housing of the drive motor 200. In this embodiment, there are two elongated holes 110, and the two elongated holes 110 are located in the same horizontal plane and arranged in parallel. Accordingly, there are two first locking holes on the drive motor 200, and two first bolt assemblies, and the two first bolt assemblies are arranged in a one-to-one correspondence with the two elongated holes 110.

[0041] A gearbox 400 is installed on the frame 100, a driven pulley 440 is installed on the input shaft of the gearbox 400, and a travel gear 430 meshing with the rack is installed on the output shaft; the axis of the output shaft of the drive motor 200 and the axis of the driven pulley 440 are respectively arranged perpendicular to the axis of the adjusting bolt 121, and the output shaft of the drive motor 200 is arranged parallel to the axis of the driven pulley 440; a pulley 220 is installed on the output shaft of the drive motor 200, and a belt (not shown in the figure) is wound around the pulley 220 and the driven pulley 440.

[0042] After adopting the above structure, when the belt is stretched but can still be used after being tightened, the detachable connection structure between the drive motor 200 and the frame 100 is released, that is, the first bolt assembly is loosened, and then the adjusting bolt 121 is rotated to adjust the position of the drive motor 200 until the belt is tightened. Finally, the drive motor 200 is fixed using the detachable connection structure, that is, the first bolt assembly is tightened, thereby ensuring the transmission efficiency and making full use of the belt. The operation process is simple and convenient.

[0043] In order to prevent the adjustment bolt 121 from rotating due to vibration during operation of the large saw, the ratchet assembly 300 includes a ratchet 310 and a pawl 320 that cooperates with the ratchet 310. In this embodiment, there are two ratchet assemblies 300, and the two ratchet assemblies 300 are connected to the two adjustment bolts 121 in a one-to-one correspondence. Taking one of the ratchet assemblies 300 as an example, the ratchet 310 is coaxially arranged with the corresponding adjustment bolt 121 and fixed to the tail end of the corresponding adjustment bolt 121. Specifically, the ratchet 310 is fixed to the top end of the adjustment bolt 121. The pawl 320 is rotatably connected to the drive motor 200. Specifically, a pawl column (not shown in the figure) is fixed to the housing of the drive motor 200. The axis of the pawl column is arranged parallel to the axis of the adjustment bolt 121. The pawl column is located between the two adjustment bolts 121, and the pawl 320 is rotatably connected to the pawl column. A torsion spring is provided between the pawl 320 and the drive motor 200 for causing the pawl 320 to abut against the ratchet 310. In this embodiment, the torsion spring is sleeved on the pawl post, with one end of the torsion spring fixed to the pawl post and the other end fixed to the pawl 320. The pawl 320 and the ratchet 310 are on the same plane, and the pawl 320 abuts against the ratchet 310. It should be noted that the torsion spring for causing the pawl 320 to abut against the ratchet 310 is an existing conventional structure and will not be described in detail.

[0044] A release lever 321 is also fixed to the pawl 320. The release lever 321 is arranged perpendicular to the pawl column. When the pawl 320 needs to be separated from the ratchet wheel 310, the release lever 321 is rotated around the pawl column. The provision of the release lever 321 on the pawl 320 facilitates the separation of the pawl 320 from the ratchet wheel 310, allowing the adjustment bolt 121 to rotate, thereby facilitating belt replacement.

[0045] A tapered bushing 210 is disposed between the output shaft of the drive motor 200 and the pulley 220. The tapered bushing 210 is sleeved onto the output shaft of the drive motor 200. The pulley 220 has a tapered hole at its center that matches the tapered bushing 210. The pulley 220 is sleeved onto the tapered bushing 210; in other words, the tapered bushing 210 is inserted into the tapered hole. A locking nut 230 is screwed onto the smaller end of the tapered bushing 210. The locking nut 230 abuts against the side of the pulley corresponding to the smaller end of the tapered hole. The pulley 220 is locked to the tapered bushing 210 by rotating the locking nut 230.

[0046] The output shaft of the driving motor 200 has a flat keyway, and a matching groove is formed at a position of the tapered bushing 210 opposite to the flat keyway. The same flat key 250 is disposed in the flat keyway and the matching groove.

[0047] The driving motor 200 drives its output shaft to rotate, and drives the tapered bushing 210 and the pulley 220 to rotate synchronously through the flat key 250 .

[0048] The tapered bushing 210 is provided so that when the pulley 220 is replaced, the flat key 250 does not need to be removed, which helps to avoid the flat key slot of the output shaft of the drive motor 200 being worn during the process of removing the flat key 250 .

[0049] The present invention has been described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the existing technology, and all of these modifications fall within the scope of protection of the present invention.

Claims

1. A travel drive structure for a large shearing machine, the large shearing machine comprising a crossbeam and a rack mounted on the crossbeam and arranged horizontally, characterized in that: The travel drive structure includes a ratchet assembly, a drive motor, and a frame horizontally slidably connected to the crossbeam, the frame is provided with an elongated hole, and the frame is simultaneously screwed with an adjusting bolt; the elongated hole is horizontally arranged, and the adjusting bolt is arranged parallel to the elongated hole; the elongated hole is provided with a detachable connecting assembly, and the detachable connecting assembly is slidably connected to the elongated hole in the length direction of the elongated hole; the drive motor is detachably connected to the frame via the detachable connecting assembly; the adjusting bolt abuts against the housing of the drive motor; A gearbox is mounted on the frame; a driven wheel is mounted on the input shaft of the gearbox, and a travel gear meshing with the rack is mounted on the output shaft of the gearbox; the axes of the output shaft of the drive motor and the driven wheel are respectively arranged perpendicular to the axis of the adjusting bolt, and the output shaft of the drive motor is arranged parallel to the axis of the driven wheel; a pulley is mounted on the output shaft of the drive motor, and a belt is wound around the pulley and the driven wheel; The ratchet assembly includes a ratchet and a pawl that cooperates with the ratchet. The ratchet is coaxially arranged with the adjusting bolt and fixed to the tail end of the adjusting bolt. The pawl is rotatably connected to the housing of the drive motor. A torsion spring is provided between the pawl and the drive motor to make the pawl abut against the ratchet. The pawl abuts against the ratchet.

2. The travel drive structure for a large-scale cutting machine according to claim 1, characterized in that: A deflecting rod is also fixed on the pawl.

3. The travel drive structure for a large-scale cutting machine according to claim 1, characterized in that: A tapered bushing is further provided between the output shaft of the drive motor and the pulley, the tapered bushing being sleeved on the output shaft of the drive motor, and a tapered hole matching the tapered bushing is provided at the center of the pulley; the pulley is sleeved on the tapered bushing, and a locking nut is spirally connected to the end with a smaller diameter of the tapered bushing, and the locking nut abuts against a side of the pulley corresponding to the end with a smaller diameter of the tapered hole; The output shaft of the driving motor has a flat keyway, and a matching groove is provided at a position of the tapered bushing opposite to the flat keyway. The same flat key is provided in the flat keyway and the matching groove.

4. The travel drive structure for a large-scale cutting machine according to claim 1, characterized in that: The detachable connection assembly is a first bolt assembly, which includes a first nut and a first bolt that match each other, and the first bolt includes a threaded rod and a nut fixed to one end of the threaded rod; A first locking hole is formed on the driving motor, and an end of the threaded rod away from the nut passes through the long hole and the first locking hole in sequence and is screwed to the first nut; The outer diameter of the nut is greater than the width of the elongated hole; The outer diameter of the first nut is larger than the diameter of the first locking hole.

5. The travel drive structure for a large-scale cutting machine according to claim 4, characterized in that: The first bolt is a hexagonal head bolt, and the first nut is a hexagonal nut. The opposite side dimension of the nut is greater than the width of the elongated hole; The opposite side dimension of the first nut is larger than the diameter of the first locking hole.

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