All-steel double-beam large cutting machine

Abstract

The invention discloses an all-steel double-beam large cutting machine which comprises two edge beams longitudinally arranged at intervals and a cross beam longitudinally and movably erected between the two edge beams, the cross beam comprises a second beam body and two first beam bodies arranged in parallel, and the two first beam bodies are connected together through a plurality of reinforcing pipes. According to the cross beam, the two first beam bodies are connected through the reinforcing pipes to form the whole cross beam, the two first beam bodies are connected together to disperse stress, and the reinforcing pipes can improve the structural strength and the bearing capacity of the cross beam when the cross beam needs to be lengthened or widened; the saw blade is simple in structure and convenient to operate, the overall weight is reduced, the structural strength and bearing capacity of the cross beam can be prevented from being reduced due to increase of the weight and the size while the manufacturing cost is saved, a circulating heat dissipation structure is arranged in the spindle box, and the problem that in the prior art, the service life is short due to the fact that the spindle box is hot due to long-time work of the saw blade is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of stone processing machinery, and particularly relates to an all-steel double-beam large cutting machine. Background Art

[0002] At present, the demand for various stones is increasing, so stone processing equipment has attracted much attention. Bridge-type stone cutters are widely used in the field of stone processing due to their fast cutting speed. Existing bridge-type stone cutters usually include side beams, cross beams and saw blade coupling assemblies. The cross beams are mounted on the left-right symmetrical side beams. The saw blade coupling assembly is movably arranged on the cross beam through a movable seat. The movable seat moves left and right on the cross beam to adjust the cutting knife position.

[0003] For example, the Chinese invention patent with the publication number CN111633838A discloses a high-efficiency and energy-saving stone cutting machine and its working method, wherein the high-efficiency and energy-saving stone cutting machine includes a machine platform and a machine base arranged on the machine platform, a main shaft for driving the stone cutting saw blade to rotate is arranged on the machine base, a pulley is arranged on the main shaft, a clutch is arranged in the pulley body, the active part of the clutch is connected and fixed with the pulley, the driven part of the clutch is connected and fixed with the main shaft, a clamping mechanism for driving the active part and the driven part to engage and disengage is also arranged on the clutch, a motor and a pulley transmission mechanism driven by the motor are arranged on the machine base, and the pulley transmission mechanism transmits power to the pulley on the main shaft. The present invention installs a clutch in the pulley on the main shaft, and the clutch gradually develops from the clutch to the engaged state, so that the force transmitted by the motor to the main shaft and the cutting saw blade on the main shaft is also gradually increased, avoiding the large current required for the instantaneous start of the motor, which is conducive to reducing the load of the electrical equipment and greatly reducing energy consumption.

[0004] When the above-mentioned stone cutter cuts large stones, due to the assembly of multiple large saw blades on its main shaft, these very heavy and large saw blades need to run at high intensity and high speed for a long time when working, and stability problems such as shaking and jumping will occur during operation. The main shaft is set on the crossbeam through a slide, and the crossbeam bears the forces of the main shaft and saw blades. This causes the entire crossbeam to be wider and larger in size to bear these forces, thereby overcoming the instability problems such as shaking and jumping during operation. However, making the size of the entire crossbeam larger requires more materials and consumes a lot of manufacturing costs. In addition, making the size of the crossbeam too large will increase its weight and size, thereby affecting its load-bearing effect. Furthermore, the spindle box of traditional stone cutters on the market currently usually does not have a heat dissipation function. Long-term operation of the saw blades can easily cause the spindle box to heat up severely, affecting the service life of the spindle box.

[0005] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Summary of the invention

[0006] The object of the present invention is to provide a full-steel double-beam large sawing machine with low manufacturing cost, which can effectively improve the load-bearing effect of the crossbeam and the main shaft has a heat dissipation function.

[0007] In order to achieve the above object, the present invention adopts such technical solution: An all-steel double-beam large sawing machine comprises two side beams arranged at intervals in the longitudinal direction, a cross beam movably mounted between the two side beams in the longitudinal direction, a middle frame assembly sleeved on the cross beam, a transverse movement mechanism for driving the middle frame assembly to move transversely, a saw blade spindle assembly fixed on the cross beam through the middle frame assembly, and a lifting mechanism arranged on the middle frame assembly for driving the saw blade spindle assembly to move up and down, wherein the cross beam comprises a second beam body and two first beam bodies arranged in parallel, the two first beam bodies are connected together by a plurality of reinforcing tubes, and the second beam body is mounted above the reinforcing tubes, and the saw blade spindle assembly comprises a spindle box assembly, a saw blade connected to the output end of the spindle box assembly, and a saw blade driving mechanism connected to the input end of the spindle box assembly; The spindle box assembly includes a spindle box body, an output shaft hole is opened on the side wall of the spindle box body at the output end thereof, a saw blade spindle is rotatably connected in the output shaft hole, an input shaft hole is opened on the side wall of the spindle box body at the input end thereof, a drive shaft is rotatably connected in the input shaft hole, the drive shaft and the saw blade spindle are transmission connected, the spindle box body includes a first box body and a second box body arranged at intervals along the length direction of the spindle box body, the first box body is located at one end close to the output shaft hole, a bearing seat for mounting the saw blade spindle is provided at a position corresponding to the output shaft hole in the first box body, heat dissipation oil channels connected to the output shaft hole are provided at positions corresponding to the bearing seats on both sides of the spindle box body, the heat dissipation oil channels are respectively arranged in the side walls on both sides of the spindle box body, the inlet of the heat dissipation oil channel is located at the bottom of the first box body, the outlet of the heat dissipation oil channel is located above the bearing seat, and the diameter of the oil inlet channel is larger than the diameter of the oil outlet channel.

[0008] Furthermore, a driving gear is fixedly provided on the drive shaft, and a driven gear meshing with the driving gear is fixedly provided on the saw blade main shaft. The drive shaft and the saw blade main shaft are connected through the driving gear and the driven gear. The driving gear and the driven gear are both located in the second housing, the diameter of the driving gear is smaller than the diameter of the driven gear, and the driving gear is located above the driven gear.

[0009] Furthermore, the first box body has a first opening on the top, the second box body has a second opening on the top, the first box body also includes a first upper cover plate for covering the first opening, the second box body also includes a second upper cover plate for covering the second opening, and the first box body has an inner side corresponding to the position of the first opening provided with a first supporting plate for supporting the first upper cover plate, and the second box body has an inner side corresponding to the position of the second opening provided with a second supporting plate for supporting the second upper cover plate.

[0010] Furthermore, an exhaust groove connected to the first opening is provided on the top of the first box body, an exhaust port is provided at the bottom of the exhaust groove, the first upper cover plate is covered behind the first opening, and the horizontal position of the top surface of the first upper cover plate is lower than the horizontal position of the top surface of the first box body.

[0011] Furthermore, the heat dissipation oil channel includes an oil inlet channel and an oil outlet channel which are interconnected. The oil inlet channel is arranged horizontally and its inlet is located at the bottom of the first housing. The oil outlet channel is arranged vertically and its outlet is located above the bearing seat. A circulating oil hole connected to the output shaft hole is opened in the middle of the oil outlet channel.

[0012] Furthermore, the transverse movement mechanism includes transverse movement rails respectively arranged on the two first beams, a transverse movement slide seat slidably arranged on the transverse movement rails, a rack arranged on the second beam, and a transverse movement drive motor arranged on the middle frame assembly, the rack and the two transverse movement rails are arranged along the length direction of the beam and are parallel to each other, the transverse movement slide seat is fixed on the middle frame assembly, and the output end of the transverse movement drive motor is provided with a driving gear meshing with the rack.

[0013] Furthermore, the two first beam bodies are respectively provided with slide rail mounting seats for mounting the transverse slide rail, and the second beam body is provided with a rack mounting seat for mounting the rack.

[0014] Furthermore, the reinforcement tube includes a first reinforcement tube and a second reinforcement tube, the first reinforcement tube is located above the second reinforcement tube, and the second beam body is located on the top of the first reinforcement tube.

[0015] Furthermore, the lifting mechanism includes guide columns respectively arranged at the four corners of the middle frame assembly and a lifting drive mechanism for driving the guide columns to lift and lower. The four corners of the middle frame assembly correspond to the outer sides of the crossbeam and are provided with guide column holes for the guide columns to pass through. The guide column holes are vertically arranged, and the guide columns respectively pass through the four guide column holes one by one. The upper ends of the four guide columns are commonly mounted on a mounting plate, and the lower ends of the four guide columns are commonly mounted on a fixed plate, and the saw blade spindle assembly is fixed at the bottom of the fixed plate.

[0016] Furthermore, the saw blade driving mechanism includes a saw blade driving motor and a pulley transmission mechanism arranged at the output end of the saw blade driving motor, and the saw blade driving motor is drivingly connected to the input end of the spindle box assembly through the pulley transmission mechanism.

[0017] By adopting the above-mentioned design scheme, the beneficial effects of the present invention are: First, the crossbeam of the present invention is composed of two first beam bodies connected by a reinforcing tube to form a crossbeam as a whole. The two first beam bodies are connected together to disperse the force. When the crossbeam needs to be lengthened or widened, multiple reinforcing tubes can improve the structural strength and load-bearing capacity of the crossbeam and reduce its overall weight. While saving manufacturing costs, it can also avoid the crossbeam's structural strength and load-bearing capacity being reduced due to increased weight and size.

[0018] Secondly, a heat dissipation oil channel is provided in the bearing seat of the spindle housing of the present invention, so that the lubricating oil with too high oil temperature in the bearing seat can exchange heat with the air through the heat dissipation oil channel, and transfer the heat to the air above the oil. The oil exchanges heat with the air and then flows back, so that the temperature of the lubricating oil in the spindle housing can be maintained in a relatively stable state. Such a continuous cycle of heat exchange can keep the temperature of the lubricating oil in the spindle housing at a relatively low and stable state, so that the spindle housing of the present invention can achieve a better heat dissipation effect, thereby reducing the overall temperature of the spindle housing and extending its service life. The spindle housing of the present invention solves the problem of the spindle housing becoming hot due to long-term operation of the saw blade in the traditional technology through the cyclic heat dissipation structure.

[0019] Furthermore, the diameter of the driving gear is smaller than that of the driven gear, and the driving gear is located above the driven gear. This arrangement can facilitate the improvement of the heat dissipation effect in the spindle box during the stone cutting process and further extend its service life.

[0020] Furthermore, the two sets of transverse slides are driven to slide on the transverse slide rails through the transmission of the driving gear and rack of the transverse drive motor, which not only makes the two sets of transverse slides move synchronously, but also ensures that the middle frame assembly moves more steadily and smoothly, thereby driving the saw blade coupling assembly to move horizontally and steadily to cut the stone, making the cutting surface smoother and the cutting efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the all-steel double-beam large cutting machine of the present invention.

[0022] Figure 2 This is a partial structural schematic diagram of the all-steel double-beam large sawing machine of the present invention from another perspective.

[0023] Figure 3It is a schematic diagram of the exploded structure of part of the cross beam in the all-steel double-beam large cutting machine of the present invention.

[0024] Figure 4 It is a schematic diagram of the exploded structure of the main shaft box assembly in the all-steel double-beam large cutting machine of the present invention.

[0025] Figure 5 It is a schematic structural diagram of a cross-section of a main shaft box assembly in an all-steel double-beam large-scale cutting machine of the present invention.

[0026] In the figure: 1- horizontal beam; 10- side beam; 11-first beam body; 12-second beam body; 13-reinforcement tube; 14-slide rail mounting seat; 15- rack mounting seat; 131- first reinforcement tube; 132-second reinforcement tube; 2-middle frame assembly; 20-longitudinal movement mechanism; 3-lateral movement mechanism; 31-transverse slide rail; 32-transverse slide seat; 33- rack; 34- transverse drive motor; 35-driving gear; 4-saw blade shaft assembly; 40-saw blade; 41-spindle box assembly; 42-saw blade driving mechanism; 411-spindle housing; 412- oil filling hole; 413- observation window; 414-saw blade spindle; 415-drive shaft; 416-first box; 417-second box; 418-bearing seat; 419-heat dissipation oil channel; 421-saw blade driving motor; 422-driving wheel; 423-driven wheel; 4141-driven gear; 4151-driving gear; 4161-first supporting step; 4162-first upper cover plate; 4163-exhaust slot; 4171-second supporting step; 4172-second upper cover plate; 4191- oil inlet channel; 4192- oil outlet channel; 4193-circulating oil hole; 5-lifting mechanism; 51-guide column; 52-lifting drive mechanism; 53-mounting plate; 54-fixing plate. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 5 As shown, the all-steel double-beam large sawing machine includes two side beams 10 arranged at intervals in the longitudinal direction, a cross beam 1 which is longitudinally movably mounted between the two side beams 10, a middle frame assembly 2 mounted on the cross beam 1, a transverse movement mechanism 3 for driving the middle frame assembly 2 to move transversely, a saw blade coupling assembly 4 fixed on the cross beam 1 through the middle frame assembly 2, and a lifting mechanism 5 arranged on the middle frame assembly 2 for driving the saw blade coupling assembly 4 to move up and down. Specifically, the cross beam 1 includes a second beam body 12 and two first beam bodies 11 arranged in parallel. The second beam body 12 is located between the two first beam bodies 11. The two first beam bodies 11 are connected by a A plurality of reinforcing tubes 13 are connected together, and the second beam body 12 is erected above the reinforcing tubes 13. The two first beam bodies 11 are connected through a plurality of reinforcing tubes 13 to form a crossbeam as a whole. Preferably, the spacing between the reinforcing tubes 13 is small and the distribution is relatively dense. It should be noted that in this embodiment, a longitudinal movement mechanism 20 is provided between the bottom of the crossbeam 1 and the two side beams 10. The crossbeam 1 moves longitudinally between the two side beams 10 through the longitudinal movement mechanism 20. The longitudinal movement mechanism 20 in the present invention adopts the structure of a conventional longitudinal movement mechanism existing in the field. As long as the above-mentioned effect can be achieved, the specific structure will not be described in detail here.

[0029] The middle frame assembly 2 of the present invention is a square structure, and a mounting groove for mounting the cross beam 1 is provided through the middle of the middle frame assembly 2. The middle frame assembly 2 is sleeved on the two first beam bodies 11 through the mounting groove. The transverse movement mechanism 3 of the present invention includes transverse movement rails 31 respectively arranged on the two first beam bodies 11, a transverse movement slide 32 slidably arranged on the transverse movement rail 31, a rack 33 arranged on the second beam body 12, and a transverse movement drive motor 34 arranged on the middle frame assembly 2. The rack 33 and the two transverse movement rails 31 are arranged along the length direction of the cross beam 1 and are parallel to each other. The two transverse movement rails 31 are both arranged at the top of the first beam body 11, the rack 33 is arranged at the top of the second beam body 12, and the transverse movement slide 32 is fixed in the mounting groove of the middle frame assembly 2 corresponding to the two first beam bodies 11, respectively. At a position above a beam body 11, a transverse driving motor 34 is fixed on the middle frame assembly 2, and the output end of the transverse driving motor 34 is provided with a driving gear 35 meshing with the rack 33. When in use, the transverse driving motor 34 controls the rotation of the driving gear 35, so that the middle frame assembly 2 drives the two sets of transverse slides 32 to slide on the transverse slide rail 31 under the meshing action of the driving gear 35 and the rack 33, thereby realizing transverse movement on the beam 1; it should be noted that the transverse driving motor 34 in the present invention is preferably a conventional differential transmission mechanism currently available in the field, and the differential transmission mechanism absorbs the resistance difference caused by the operation of the two transverse slide rails 31 during the translation, so as to ensure the smooth, accurate and reliable movement of the middle frame assembly 2 and the saw blade coupling assembly 4.

[0030] The crossbeam 1 of the present invention is composed of two first beam bodies 11 connected by a plurality of reinforcing tubes 13 to form a crossbeam as a whole. The spacing between the respective reinforcing tubes 13 is small, the distribution is relatively close, and the structure is more stable. When the crossbeam 1 needs to be lengthened or widened, the plurality of reinforcing tubes 13 can improve the structural strength and load-bearing capacity of the crossbeam 1 and reduce its overall weight, thereby saving manufacturing costs and preventing the crossbeam 1 from reducing its structural strength and load-bearing capacity due to increased weight and size. The two first beam bodies 11 are connected together to disperse the forces, and the forces on the first beam body 11 close to the saw blade coupling assembly 4 can be dispersed to the first beam body 11 far away from the saw blade coupling assembly 4, so that the forces on the two first beam bodies 11 are more balanced, thereby further improving the overall structural strength and load-bearing capacity of the crossbeam 1. The frame assembly 2 is an integrally cast structure, and the middle frame assembly 2 has a stronger structural strength and a more balanced force. The middle frame assembly 2 moves smoothly on the crossbeam 1, driving the saw blade coupling assembly 4 to move smoothly to cut stone, and the cutting stability is better; moreover, through the transmission of the driving gear 35 and the rack 33 of the transverse drive motor 34, the two groups of transverse slides 32 are driven to slide on the transverse slide rail 31, which not only makes the two groups of transverse slides 32 move synchronously, but also can ensure that the middle frame assembly 2 moves more steadily and smoothly, thereby driving the saw blade coupling assembly 4 to move horizontally and smoothly to cut stone, the cutting surface is smoother, and the cutting efficiency is higher. Furthermore, 26-32 saw blades can be installed on the coupling assembly 4 of the present invention, and the crossbeam 1 of the present invention can bear the weight of the saw blade coupling assembly 4, and has a strong load-bearing capacity.

[0031] Furthermore, the two first beam bodies 11 are respectively provided with a slide rail mounting seat 14 for installing the transverse slide rail 31, and the second beam body 12 is provided with a rack mounting seat 15 for installing the rack 33. This arrangement makes the structure of the horizontal movement cooperation between the middle frame assembly 2 and the beam 1 more stable, and improves the overall cutting performance; the reinforcement tube 13 of the present invention is a square pipe fitting, which can strengthen the structural strength and load-bearing capacity of the beam 1. Preferably, the reinforcement tube 13 of the present invention includes a first reinforcement tube 131 and a second reinforcement tube 132, the first reinforcement tube 131 is located above the second reinforcement tube 132, the size of the first reinforcement tube 131 is smaller than the size of the second reinforcement tube 132, the first reinforcement tube 131 can be used to support the second beam body 12, and accordingly, the second beam body 12 is located on the top of the first reinforcement tube 131; dividing the reinforcement tubes 13 into reinforcement tubes 13 of different sizes can save costs during manufacturing.

[0032] The saw blade coupling assembly 4 of the present invention includes a spindle box component 41, a saw blade 40 connected to the output end of the spindle box component 41, and a saw blade driving mechanism 42 connected to the input end of the spindle box component 41. Specifically, the spindle box component 41 includes a spindle box body 411, and the side wall of the spindle box body 411 is provided with an oil filling hole 412 connected to the inside thereof and an observation window 413 for observing the liquid level height inside thereof; the spindle box body 411 is provided with an output shaft hole on the side wall at the output end thereof, and a saw blade spindle 414 is rotatably connected in the output shaft hole; the saw blade spindle 414 is rotatably arranged on the spindle box body 411 and extends out from the output shaft hole; the saw blade 40 is arranged on one end of the saw blade spindle 414 away from the spindle box body 411; the spindle box body 411 is provided with an input shaft hole on the side wall at the input end thereof, and a drive shaft 415 is rotatably connected in the input shaft hole; the ... The driven shaft 415 is rotatably set on the spindle housing 411 and extends out from the input shaft hole. The end of the driving shaft 415 away from the spindle housing 411 is transmission-connected to the saw blade driving mechanism 42, and the driving shaft 415 located in the spindle housing 411 and the saw blade spindle 414 are transmission-connected; the saw blade driving mechanism 42 of the present invention includes a saw blade driving motor 421 and a pulley transmission mechanism arranged at the output end of the saw blade driving motor 421. Specifically, the pulley transmission mechanism includes a driving wheel 422 arranged at the output end of the saw blade driving motor 421 and a driven wheel 423 arranged on the end of the driving shaft 415 away from the spindle housing 411, and a belt (not shown in the figure) for connecting the driving wheel 422 and the driven wheel 423. The saw blade driving motor 421 is transmission-connected to the end of the driving shaft 415 away from the spindle housing 411 through the pulley transmission mechanism.

[0033] like Figures 4 to 5As shown, the spindle housing 411 of the present invention includes a first housing 416 and a second housing 417 which are arranged at intervals along the length direction of the spindle housing 411. Specifically, the first housing 416 and the second housing 417 are separated by a partition, and a through hole is provided on the upper part of the partition. Correspondingly, a mounting hole for the saw blade spindle 411 to pass through is provided on the lower part of the partition. The saw blade spindle 411 passes through the mounting hole and extends into the second housing 417 and is connected to the driving shaft 415 in transmission. The provision of the through hole can play a role in gas flow circulation between the first housing 416 and the second housing 417; the first housing 416 is provided at one end close to the output shaft hole, and a bearing seat 418 for mounting the saw blade spindle 414 is provided at a position corresponding to the output shaft hole in the first housing 416. The spindle housing 411 Heat dissipation oil channels 419 connected to the output shaft hole are provided at the positions corresponding to the bearing seats 418 on both sides. The heat dissipation oil channels 419 are respectively arranged in the side walls on both sides of the spindle housing 411, and the entrance of the heat dissipation oil channel 419 is located at the bottom of the first housing 416, and the outlet of the heat dissipation oil channel 419 is located above the bearing seat 418. Specifically, the heat dissipation oil channel 419 includes an oil inlet channel 4191 and an oil outlet channel 4192 which are connected end to end. The oil inlet channel 4191 is arranged horizontally and its entrance is located at the bottom of the first housing 416, and the oil outlet channel 4192 is arranged vertically and its outlet is located above the bearing seat 418. A circulating oil hole 4193 connected to the output shaft hole is opened in the middle of the oil outlet channel 4192, and the diameter of the oil inlet channel 4191 is larger than the diameter of the oil outlet channel 4192.

[0034] Furthermore, the first box body 416 has a first opening on the top, and the second box body 417 has a second opening on the top. The first box body 416 also includes a first upper cover plate 4162 for covering the first opening, and the second box body 417 also includes a second upper cover plate 4172 for covering the second opening. A first supporting step 4161 for supporting the first upper cover plate 4162 is formed on the inner side of the first box body 416 at a position corresponding to the first opening, and a second supporting step 4171 for supporting the second upper cover plate 4172 is formed on the inner side of the second box body 417 at a position corresponding to the second opening. Preferably, an exhaust groove 4163 connected to the first opening is also provided on the top of the first box body 416, and a through exhaust port is provided at the bottom of the exhaust groove 4163, and the exhaust port is connected to the outside of the spindle box body 411. The first upper cover plate 4162 is covered behind the first opening, and the horizontal position of the top surface of the first upper cover plate 4162 is lower than the horizontal position of the top surface of the first box body 416.

[0035] Before normal operation, a certain amount of lubricating oil needs to be injected into the first box body 416 to cover the saw blade spindle 414, and the oil inlet channel 4191 is always located below the liquid level of the lubricating oil in the first box body 416. When the saw blade spindle 414 rotates at a high speed and causes the oil temperature in the first box body 416 to be too high, the density of the lubricating oil with high temperature will decrease and thus increase, so that the lubricating oil with too high oil temperature in the output shaft hole will be squeezed into the oil outlet channel 4192 from the circulating oil hole 4193, and the lubricating oil with too high oil temperature in the first box body 416 will also be squeezed into the oil outlet channel 4192 from the oil inlet channel 4191, and flow out from the outlet of the oil outlet channel 4192 to perform heat exchange with the air above the bearing seat 418, and transfer the heat to the air above the oil. After the oil and air perform heat exchange The heat in the air above the oil is then heat-exchanged with the external air through the exhaust groove 4163, and can also exchange heat with the air in the second box 417 through the through holes on the partition, so that the temperature in the second box 417 is reduced. Such a continuous cycle of heat exchange can keep the temperature of the lubricating oil in the spindle box 411 at a relatively low and stable state, so that the spindle box 411 of the present invention can achieve a better heat dissipation effect, thereby reducing the overall temperature of the spindle box 411 and extending its service life. The spindle box 411 of the present invention solves the problem of the saw blade 40 working for a long time in the traditional technology causing the spindle box 411 to heat up through the circulating heat dissipation structure.

[0036] In addition, due to thermal expansion and contraction and oil and gas circulation, water vapor will be generated in the first box body 416 and condensed on the first upper cover plate 4162. The exhaust groove 4163 is provided to also play a role in removing water vapor. Since the horizontal position of the top surface of the first upper cover plate 4162 is lower than the horizontal position of the top surface of the first box body 416, the water vapor on the top surface of the first upper cover plate 4162 will first flow out from the exhaust port.

[0037] Preferably, a driving gear 4151 is fixedly provided on the drive shaft 415, and a driven gear 4141 meshingly connected with the driving gear 4151 is fixedly provided on the saw blade main shaft 414. The drive shaft 415 and the saw blade main shaft 414 are connected through the driving gear 4151 and the driven gear 4141, and the driving gear 4151 and the driven gear 4141 are both located in the second box body 417; preferably, in the present invention, the diameter of the driving gear 4151 is smaller than the diameter of the driven gear 4141, and the driving gear 4151 is located above the driven gear 4141; such an arrangement can facilitate the improvement of the heat dissipation effect in the second box body 417 during the stone cutting process. Specifically, before normal operation, a certain amount of lubricating oil needs to be injected into the first box body 416 and the second box body 417. When the lubricating oil is injected into the second box body 417 , so that the liquid level of the oil in the second box body 417 is not higher than the height of the driven gear 4141. Since the saw blade drive motor 421 drives the driving gear 4151 to rotate at a high speed, it is easy to generate more heat, and the driven gear 4141 located below is larger than the driving gear 4151, so that it has a certain differential ratio with the driving gear 4151, so it rotates relatively slowly and generates relatively less heat. The driving gear 4151 is arranged above the driven gear 4141, and the height of the oil is not higher than the height of the driven gear 4141. This can effectively prevent the heat generated by the high-speed rotation of the driving gear 4151 from being absorbed by the oil too quickly, causing the oil temperature in the spindle box body 411 to rise too quickly, thereby slowing down the overall temperature rise rate of the spindle box body 411 and further extending its service life.

[0038] like Figure 1 to Figure 2As shown, the lifting mechanism 5 of the present invention includes guide columns 51 respectively arranged at the four corners of the middle frame assembly 2 and a lifting drive mechanism 52 for driving the guide columns 51 to rise and fall. Specifically, the four corners of the middle frame assembly 2 are provided with guide column holes for the guide columns 51 to pass through on the outer sides of the corresponding crossbeams 1. Each guide column hole is vertically arranged. The guide columns 51 pass through the four guide column holes one by one. The guide column holes guide the guide columns 51. The upper ends of the four guide columns 51 are commonly installed on a mounting plate 53, and the lower ends of the four guide columns 51 are commonly installed on a fixed plate 54. The spindle box assembly 41 and the saw blade 40 are fixed on the fixed plate 54 and are located at the bottom of the fixed plate 54. The lifting drive mechanism 52 and the saw blade driving motor 421 are both fixed on the mounting plate 53. Specifically, in the present embodiment, the lifting drive mechanism 52 includes two lifting cylinders fixed on the mounting plate 53. The lifting cylinders are arranged vertically, one end of the lifting cylinders is fixed on the mounting plate 53, and the other end of the lifting cylinders is fixed on the middle frame assembly 2. The mounting plate 53 is driven up and down by the lifting cylinders, and the spindle box assembly 41 and the saw blade 40 at the bottom of the fixed plate 54 are driven up and down by the four guide columns 51, so that the saw blade 40 can cut the stone longitudinally. It should be noted that the lifting mechanism 5 in the present embodiment can also adopt other conventional lifting structures in the field, as long as the above-mentioned effects can be achieved.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An all-steel double-beam large sawing machine, comprising two side beams arranged at intervals in the longitudinal direction, a cross beam mounted between the two side beams and movably mounted in the longitudinal direction, a middle frame assembly mounted on the cross beam, a transverse movement mechanism for driving the middle frame assembly to move transversely, a saw blade spindle assembly fixed on the cross beam through the middle frame assembly, and a lifting mechanism arranged on the middle frame assembly for driving the saw blade spindle assembly to move up and down, characterized in that: The crossbeam includes a second beam body and two first beam bodies arranged in parallel, the two first beam bodies are connected together by a plurality of reinforcing tubes, and the second beam body is erected above the reinforcing tubes, and the saw blade spindle assembly includes a spindle box assembly, a saw blade connected to the output end of the spindle box assembly, and a saw blade driving mechanism connected to the input end of the spindle box assembly; The spindle box assembly includes a spindle box body, an output shaft hole is opened on the side wall of the spindle box body at the output end thereof, a saw blade spindle is rotatably connected in the output shaft hole, an input shaft hole is opened on the side wall of the spindle box body at the input end thereof, a drive shaft is rotatably connected in the input shaft hole, the drive shaft and the saw blade spindle are transmission connected, the spindle box body includes a first box body and a second box body arranged at intervals along the length direction of the spindle box body, the first box body is located at one end close to the output shaft hole, a bearing seat for mounting the saw blade spindle is provided at a position corresponding to the output shaft hole in the first box body, heat dissipation oil channels connected to the output shaft hole are provided at positions corresponding to the bearing seats on both sides of the spindle box body, the heat dissipation oil channels are respectively arranged in the side walls on both sides of the spindle box body, the inlet of the heat dissipation oil channel is located at the bottom of the first box body, the outlet of the heat dissipation oil channel is located above the bearing seat, and the diameter of the oil inlet channel is larger than the diameter of the oil outlet channel.

2. The all-steel double-beam large-scale cutting machine according to claim 1 is characterized in that: A driving gear is fixedly provided on the driving shaft, and a driven gear meshing with the driving gear is fixedly provided on the saw blade main shaft. The driving shaft and the saw blade main shaft are transmission-connected via the driving gear and the driven gear. Both the driving gear and the driven gear are located in the second housing. The diameter of the driving gear is smaller than that of the driven gear, and the driving gear is located above the driven gear.

3. The all-steel double-beam large-scale cutting machine according to claim 1 is characterized in that: The first box body has a first opening on the top, and the second box body has a second opening on the top. The first box body also includes a first upper cover plate for covering the first opening, and the second box body also includes a second upper cover plate for covering the second opening. A first supporting plate for supporting the first upper cover plate is provided at a position corresponding to the first opening on the inner side of the first box body, and a second supporting plate for supporting the second upper cover plate is provided at a position corresponding to the second opening on the inner side of the second box body.

4. The all-steel double-beam large-scale cutting machine according to claim 3 is characterized in that: The top of the first box body is also provided with an exhaust groove connected to the first opening, and the bottom of the exhaust groove is provided with an exhaust port. The first upper cover plate is arranged behind the first opening, and the horizontal position of the top surface of the first upper cover plate is lower than the horizontal position of the top surface of the first box body.

5. The all-steel double-beam large-scale cutting machine according to claim 1 is characterized in that: The heat dissipation oil channel includes an oil inlet channel and an oil outlet channel which are interconnected. The oil inlet channel is arranged horizontally and its inlet is located at the bottom of the first housing. The oil outlet channel is arranged vertically and its outlet is located above the bearing seat. A circulating oil hole connected to the output shaft hole is opened in the middle of the oil outlet channel.

6. The all-steel double-beam large-scale cutting machine according to claim 1 is characterized in that: The transverse movement mechanism includes transverse movement rails respectively arranged on the two first beams, a transverse movement slide seat slidably arranged on the transverse movement rails, a rack arranged on the second beam, and a transverse movement drive motor arranged on the middle frame assembly. The rack and the two transverse movement rails are arranged along the length direction of the beam and are parallel to each other. The transverse movement slide seat is fixed on the middle frame assembly, and the output end of the transverse movement drive motor is provided with a driving gear meshing with the rack.

7. The all-steel double-beam large-scale cutting machine according to claim 1 is characterized in that: The two first beam bodies are respectively provided with slide rail mounting seats for mounting the transverse slide rail, and the second beam body is provided with a rack mounting seat for mounting the rack.

8. The all-steel double-beam large-scale cutting machine according to claim 1 is characterized in that: The reinforcement tube includes a first reinforcement tube and a second reinforcement tube, the first reinforcement tube is located above the second reinforcement tube, and the second beam body is located on the top of the first reinforcement tube.

9. The all-steel double-beam large-scale cutting machine according to claim 1, characterized in that: The lifting mechanism includes guide columns respectively arranged at the four corners of the middle frame assembly and a lifting drive mechanism for driving the guide columns to lift and lower. The four corners of the middle frame assembly correspond to the outer sides of the crossbeam and are provided with guide column holes for the guide columns to pass through. The guide column holes are arranged vertically, and the guide columns respectively pass through the four guide column holes one by one. The upper ends of the four guide columns are commonly mounted on a mounting plate, and the lower ends of the four guide columns are commonly mounted on a fixed plate. The saw blade spindle assembly is fixedly mounted on the bottom of the fixed plate.

10. The all-steel double-beam large-scale cutting machine according to claim 1, characterized in that: The saw blade driving mechanism comprises a saw blade driving motor and a pulley transmission mechanism arranged at the output end of the saw blade driving motor. The saw blade driving motor is drivingly connected to the input end of the spindle box assembly through the pulley transmission mechanism.

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