Bridge type stone cutting machine cross beam with high structural strength

By designing a stable connection between multiple connecting rods and support beams on the cross beam of the stone cutting machine, the problem of rocking and jumping of the beam of the traditional stone cutting machine is solved, and higher structural strength and cutting efficiency are achieved.

CN222920865UActive Publication Date: 2025-05-30QUANZHOU HAIENDE ELECTROMECHANICAL TECH DEV
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Patent Information

Application Number
CN202421369460.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-17
Publication Date
2025-05-30
Estimated Expiration
2034-06-17

AI Technical Summary

Technical Problem

Traditional stone cutting machine beams are difficult to overcome unstable problems such as shaking and jumping during high-strength and high-speed operation, resulting in poor flatness of the stone cutting surface, poor cutting quality and low cutting efficiency.

Method used

A bridge stone cutting machine cross beam with high structural strength is designed, and is connected to the two first beams through a plurality of first connecting rods, a second connecting rod and a third connecting rod to form a stable whole, and the stress is more evenly dispersed.

Benefits of technology

The structural strength and load-bearing capacity of the beam are improved, cutting stability is maintained, and the flatness and cutting efficiency of the cutting surface are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a bridge type stone cutting machine cross beam with high structural strength, which is provided with two first branch beams and a plurality of connecting rods for connecting the two first branch beams in parallel, and the connecting rods comprise a plurality of first connecting rods, a plurality of second connecting rods and a plurality of third connecting rods, the first connecting rods and the second connecting rods are arranged at equal intervals in the extending direction of the cross beam, and the third connecting rods are arranged below the first connecting rods in parallel; according to the cross beam of the bridge type stone cutting machine, the first connecting rod, the second connecting rod, the third connecting rod and the two first branch beams are connected into a stable whole, stress is more uniform and dispersed, the cross beam is high in structural strength and bearing capacity, cutting stability can be kept, the cutting face is smoother, and cutting efficiency is higher.
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Description

Technical Field

[0001] The utility model relates to the technical field of stone processing equipment, in particular to a cross beam of a bridge type stone cutting machine with high structural strength. Background Art

[0002] The existing stone cutting machine is a machine for slicing mine stones. When cutting stones, it is necessary to keep the saw blade moving smoothly to cut the stones, avoiding problems such as the saw blade deviating, shaking, and jumping, so as to achieve the purpose of a flat cutting surface and high cutting efficiency. However, when using a stone cutting machine to cut large stones in traditional stone slicing processing, since multiple very large saw blades are assembled on the saw blade cutting assembly, the extremely heavy and large saw blade cutting assembly is still very difficult to effectively overcome problems such as shaking and jumping during high-intensity and high-speed operation; the saw blade cannot move back and forth smoothly on the same horizontal plane, the flatness of the stone cutting surface is poor, the cutting quality is not good and the cutting efficiency is low, and the saw blade is easily deformed and damaged, ultimately affecting the overall cutting performance.

[0003] The existing bridge type stone cutting machines on the market include two side beams, two cross beams arranged on the two side beams, a middle frame passing through the two cross beams, and a saw blade cutting assembly arranged on one side of the middle frame. The two cross beams can move back and forth on the side beams, and the middle frame moves left and right on the two cross beams to drive the saw blade cutting assembly to move left and right to cut the stones, and the saw blade cutting assembly moves up and down on one side of the middle frame to cut the stones; among them, the two cross beams on the existing stone cutting machine are connected together by a plurality of connecting rods to ensure that the two cross beams are arranged in parallel, so that the saw blade cutting assembly moves smoothly left and right to cut the stones; the connecting rods are arranged in parallel at intervals in the extending direction of the cross beam, and the structures of the connecting rods are the same and the assembly positions are on the same horizontal plane, so that the overall structural strength and load-bearing capacity of the cross beam are reduced, the cutting stability of the saw blade cutting assembly is poor, it cannot move smoothly horizontally, the saw blade will jump up and down, and the cutting efficiency is low.

[0004] In view of this, the designer deeply conceived and actively studied and improved the trial production in response to the many deficiencies and inconveniences caused by the imperfect structural design of the above-mentioned stone cutting machine, and developed and designed this case. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cross beam of a bridge type stone cutting machine with high structural strength. The first connecting rod, the second connecting rod, the third connecting rod and the two first support beams are connected into a stable whole, the force is more evenly dispersed, the cross beam has strong structural strength and high load-bearing capacity, can maintain cutting stability, the cutting surface is flatter, and the cutting efficiency is higher.

[0006] In order to achieve the above object, the solution of the utility model is:

[0007] A crossbeam of a bridge-type stone cutting machine with high structural strength, the crossbeam having two first support beams and a plurality of connecting rods that connect the two first support beams in parallel. The connecting rods include a plurality of first connecting rods, a plurality of second connecting rods, and a plurality of third connecting rods. The first connecting rods and the second connecting rods are equally spaced in the extending direction of the crossbeam, and the third connecting rods are arranged in parallel below the first connecting rods.

[0008] The first connecting rods and the third connecting rods have the same structure; the longitudinal height of the first connecting rods and the third connecting rods is less than the longitudinal height of the second connecting rods, and the transverse width of the first connecting rods and the third connecting rods is greater than the transverse width of the second connecting rods.

[0009] Each of the first support beams has an inner side plate and an outer side plate arranged in parallel. A plurality of through holes for the first connecting rods, the second connecting rods, and the third connecting rods to pass through respectively are provided on the inner side plate, and a slot is provided on the outer side plate corresponding to each of the first connecting rods, the second connecting rods, and the third connecting rods; both ends of each of the first connecting rods, the second connecting rods, and the third connecting rods are respectively provided with a top portion that abuts against the inner side surface of the outer side plate and a plug portion that is inserted into the corresponding slot of the outer side plate, and welding fixation is performed at the connection between the top portion and / or the plug portion and the outer side plate.

[0010] The connecting rods are rectangular hollow tubes. Four L-shaped plug portions located at the four corners of the rectangular tube orifice are convexly provided on the rectangular tube orifices of the first connecting rods, the second connecting rods, and the third connecting rods, and four L-shaped slots for the L-shaped plug portions to be inserted and matched are provided on the outer side plates.

[0011] The top side surfaces of the first connecting rods and the second connecting rods are located on the same horizontal plane.

[0012] A partition is provided inside the first support beam above the first connecting rods and the second connecting rods, and a linear guide is provided on the partition; a second support beam is provided at the middle position between the two first support beams and is erected on the first connecting rods and the second connecting rods. A rack is provided on the second support beam, and the two linear guides and the rack are arranged parallel to each other in the extending direction of the crossbeam.

[0013] The bottom surface of the partition plate of the first support beam is provided with a plurality of first reinforcing plates that are spaced apart and supported above each connecting rod. The inner plate and the outer plate are respectively provided with a plurality of first through holes for inserting the two ends of the first reinforcing plate, and the first through holes are spaced apart above the through holes or slots and are not communicated with the through holes or slots. The first reinforcing plate has a first protruding portion inserted into the first through hole; the first support beam is provided with a bottom plate, and the top surface of the bottom plate is provided with a plurality of second reinforcing plates located below each connecting rod. The inner plate and the outer plate are respectively provided with a plurality of second through holes for inserting the two ends of the second reinforcing plate, and the second reinforcing plate has a second protruding portion inserted into the second through hole; and the first through holes and the second through holes correspond to each other up and down one by one.

[0014] A welding window for a welding torch to extend into for welding is provided on the inner plate, and the welding window is located at a position slightly below the middle between the two through holes.

[0015] Two hoisting round tubes are symmetrically arranged on the first support beam with the central axis as the axis of symmetry, and the hoisting round tubes are located at a position slightly above the middle between two of the first connecting rods and the second connecting rods; the inner plate and the outer plate are respectively provided with circular through holes for assembling and fixing the two ends of the hoisting round tubes.

[0016] After adopting the above structure, the two first support beams of the cross beam of the bridge-type stone cutting machine of the present invention are connected and fixed together by a plurality of first connecting rods, second connecting rods and third connecting rods, and the first connecting rods and the second connecting rods are equally spaced in the extending direction of the cross beam, and the third connecting rod is arranged parallel to the first connecting rod below; the positions where the first connecting rod, the second connecting rod and the third connecting rod are supported on the first support beam are different, and the first connecting rod, the second connecting rod, the third connecting rod and the two first support beams can be connected into a stable whole, the force is more evenly distributed, the structural strength of the cross beam is strong, the load-bearing capacity is high, the cutting stability can be maintained, the cutting surface is flatter, and the cutting efficiency is higher. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the cross beam of the bridge-type stone cutting machine of the present invention;

[0018] Figure 2 is a partial exploded schematic diagram of the cross beam of the bridge-type stone cutting machine of the present invention;

[0019] Figure 3 is Figure 2 a partial enlarged view in

[0020] Figure 4 is a schematic structural diagram of the first connecting rod and the third connecting rod of the cross beam of the bridge-type stone cutting machine of the present invention;

[0021] Figure 5 is a schematic structural diagram of the second connecting rod of the cross beam of the bridge-type stone cutting machine of the present invention;

[0022] Figure 6 It is a front view schematic diagram of the outer plate of the crossbeam of the bridge-type stone cutting machine of the present utility model;

[0023] Figure 7 It is a front view schematic diagram of the inner plate of the crossbeam of the bridge-type stone cutting machine of the present utility model;

[0024] Figure 8 It is a structural schematic diagram of the crossbeam of the bridge-type stone cutting machine of the present utility model applied to a stone cutting machine.

[0025] Symbol Explanation

[0026] Crossbeam 1; First support beam 11; Connecting rod 12; First connecting rod 123; Second connecting rod 124; Third connecting rod 125; Inner plate 111; Outer plate 112; Through hole 1111; Slot 1121; Abutting top 121; Inserting part 122; L-shaped inserting part 1221; L-shaped slot 1122; Partition plate 13; Linear guide 14; Second support beam 15; Rack 16; First reinforcing plate 18; First through hole 181; Bottom plate 113; Second reinforcing plate 19; Second through hole 191; Welding window 1112; Lifting round pipe 2; Circular through hole 21. Specific Embodiment

[0027] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0028] Please refer to Figures 1 to 8 , the present utility model discloses a crossbeam of a bridge-type stone cutting machine with high structural strength. The crossbeam 1 has two first support beams 11 and a plurality of connecting rods 12 that connect the two first support beams 11 in parallel. The connecting rod 12 has a plurality of first connecting rods 123, a plurality of second connecting rods 124, and a plurality of third connecting rods 125. The first connecting rods 123 and the second connecting rods 124 are arranged at equal intervals in the extending direction of the crossbeam 1, and the third connecting rods 125 are arranged in parallel below the first connecting rods 123.

[0029] For the two first support beams 11 of the cross beam of the bridge-type stone cutting machine of the present utility model, they are connected and fixed together through a plurality of first connecting rods 123, second connecting rods 124 and third connecting rods 125. The first connecting rods 123 and second connecting rods 124 are arranged at equal intervals in the extending direction of the cross beam 1, and the third connecting rod 125 is arranged parallel to the first connecting rod 123 and below it. The positions where the first connecting rod 123, second connecting rod 124 and third connecting rod 125 are supported on the first support beam 11 are different, so that the first connecting rod 123, second connecting rod 124, third connecting rod 125 and the two first support beams 11 can be connected into a stable whole, the force is more evenly dispersed, the structural strength of the cross beam 1 is strong, the load-bearing capacity is high, the cutting stability can be maintained, the cutting surface is flatter, and the cutting efficiency is higher.

[0030] The structures of the first connecting rod 123 and the third connecting rod 125 of the present utility model are the same. The longitudinal heights of the first connecting rod 123 and the third connecting rod 125 are less than the longitudinal height of the second connecting rod 124, and the transverse widths of the first connecting rod 123 and the third connecting rod 125 are greater than the transverse width of the second connecting rod 124. The first connecting rod 123 and the second connecting rod 124 are arranged at intervals in the horizontal direction of the extension of the cross beam 1, the first connecting rod 123 and the third connecting rod 124 are arranged at intervals in the longitudinal height direction of the cross beam 1. The L-shaped plugging parts 1221 at both ends of the first connecting rod 123, second connecting rod 124 and third connecting rod 125 cooperate with the L-shaped slots 1122 on the outer side plates 112. The positions where the first connecting rod 123, second connecting rod 124 and third connecting rod 125 are supported on the first support beam 11 are different, and the longitudinal height of the second connecting rod 124 is greater than the longitudinal heights of the first connecting rod 123 and the third connecting rod 125. The second connecting rod 124 is arranged in a staggered manner with the first connecting rod 123 and the third connecting rod 125 respectively, which can improve the rigidity of the first support beam 11 and further make the structural strength of the cross beam 1 strong.

[0031] Each of the first support beams 11 of the present utility model has an inner side plate 111 and an outer side plate 112 arranged in parallel. A plurality of through holes 1111 for respectively passing through a plurality of first connecting rods 123, second connecting rods 124, and third connecting rods 125 are provided on the inner side plate 111. A slot 1121 is provided on the outer side plate 112 corresponding to each of the first connecting rod 123, second connecting rod 124, and third connecting rod 125; both ends of each of the first connecting rod 123, second connecting rod 124, and third connecting rod 125 are respectively provided with an abutting portion 121 abutting against the inner side surface of the outer side plate 112 and a plugging portion 122 plugged into the slot 1121 of the corresponding outer side plate 112, and welding fixation is performed at the connection between the abutting portion 121 and / or the plugging portion 122 and the outer side plate 112; when the two first support beams 11 and the first connecting rod 123, second connecting rod 124, and third connecting rod 125 are assembled and fixed, first, both ends of the first connecting rod 123, second connecting rod 124, and third connecting rod 125 respectively pass through the through holes 1111 of the inner side plates 111 of the two first support beams 11. Secondly, the plugging portions 122 of the first connecting rod 123, second connecting rod 124, and third connecting rod 125 are plugged into the slots 1121 of the outer side plates 112 of the first support beams 11, and the abutting portions 121 abut against the inner side surfaces of the outer side plates 112 of the first support beams 11; then, welding fixation is performed at the connection between the abutting portion 121 and / or the plugging portion 122 and the outer side plate 112; the two first support beams 11 and the first connecting rod 123, second connecting rod 124, and third connecting rod 125 are fixed together by two methods of plugging and welding, making the connection structure between the first support beam 11 and the connecting rod 12 stronger and more stable, thereby making the structure of the entire cross beam 1 have high strength and high load-bearing capacity. During the high-speed and high-strength cutting process, the cutting stability can be maintained, the cutting surface is smoother, and the cutting efficiency is higher; moreover, the abutting portions 121 of the first connecting rod 123, second connecting rod 124, and third connecting rod 125 abut against the inner side surface of the outer side plate 112, the welding position of the abutting portion 121 is on the inner side surface of the outer side plate 112, and the stress position is on the inner side surface of the outer side plate 112; the plugging portions 122 of the first connecting rod 123, second connecting rod 124, and third connecting rod 125 are plugged into the slots 1121 of the outer side plate 112, the plugging and assembling position is near the outer side surface of the outer side plate 112, and the stress position is not on the inner side surface of the outer side plate 112; therefore, the plugging and assembling position and the welding position are not in the same vertical plane, the stress is dispersed, and the loosening and fracture caused by the concentrated stress at the welding joint of the first support beam 11 and the first connecting rod 123, second connecting rod 124, and third connecting rod 125 are avoided, so that the saw blade cutting assembly cannot cut the stone smoothly on the cross beam 1;Moreover, the plug-in assembly relationships between the first connecting rod 123, the second connecting rod 124, and the third connecting rod 125 and the first support beam 11 can limit the relative positional relationships among the first connecting rod 123, the second connecting rod 124, the third connecting rod 125, and the first support beam 11, featuring high assembly precision and assembly efficiency. It can avoid the displacement during the welding process, which may cause the two first support beams 11 to be unable to be arranged in parallel, and can ensure that the two first support beams 11 are arranged in parallel, enabling the saw blade cutting assembly to move horizontally and cut the stone smoothly.

[0032] In the present utility model, the first connecting rod 123, the second connecting rod 124, and the third connecting rod 125 are each provided with four L-shaped plug-in portions 1221 protruding from the rectangular pipe orifice and located at the four corners of the rectangular pipe orifice. The outer side plate 112 is provided with four L-shaped slots 1122 for the L-shaped plug-in portions 1221 to be plugged and matched. The matching structure of the four L-shaped plug-in portions 1221 and the four L-shaped slots 1122 can limit the assembly position between the connecting rod 12 and the outer side plate 112, making the plug-in assembly of the connecting rod 12 and the outer side plate 112 more stable, and the stress points of the first support beam 11 more dispersed and the stress more uniform. Moreover, the interval between two adjacent L-shaped plug-in portions 1221 is the abutting top portion 121, and the plug-in portion 122 and the abutting top portion 121 are connected end to end in sequence to form a rectangular pipe orifice with a concave-convex structure. The arrangement of multiple plug-in portions 122 and multiple abutting top portions 121 can divide the position of the assembly and cooperation with the outer side plate into multiple parts, having multiple stress points, further dispersing the stress between the connecting rod 12 and the first support beam 11, and making the connection between the first support beam 11 and the first connecting rod 123, the second connecting rod 124, and the third connecting rod 125 more firm, avoiding the loosening and disconnection between the two, which may cause the saw blade cutting assembly to be unable to cut the stone smoothly on the cross beam 1.

[0033] In the present utility model, the top side surfaces of the first connecting rod 123 and the second connecting rod 124 are located on the same horizontal plane; the top surfaces of the respective connecting rods 12 and the assembly positions with the first support beam 11 are located on the same horizontal plane, making the connection structure more firm, the stress more uniform, and improving the structural strength of the cross beam 1. Moreover, the top surfaces of the respective connecting rods 12 being flush can facilitate the erection of the second support beam 15 and ensure that the second support beam 15 is horizontally arranged. And the first connecting rod 123 and the third connecting rod 125 are located on the same vertical line, such that the first connecting rod 123, the second connecting rod 124, and the third connecting rod 125 are located at the three vertices of a right triangle, having triangular stability and enhancing the structural strength of the cross beam 1.

[0034] Inside the first support beam 11 of the present utility model, there is a partition 13 located above the first connecting rod 123 and the second connecting rod 124. A wire rail 14 is provided on the partition 13. At the middle position between the two first support beams 11, there is a second support beam 15 mounted on the first connecting rod 123 and the second connecting rod 124. A rack 16 is provided on the second support beam 15. The two wire rails 14 and the rack 16 are arranged parallel to each other in the extending direction of the cross beam 1. And the two wire rails 14 are provided on the partition 13, and there is a spacing between the wire rail 14 and the connecting rod 12. The rack 16 is provided on the bottom side edge of the second support beam 15, and the rack almost abuts against the top surface of the connecting rod 12, that is, the longitudinal height of the two wire rails 14 is higher than the longitudinal height of the rack 16, so that the two wire rails 14 and the rack 15 are located on three parallel sides of the triangular prism, forming a triangular stability structure, and the saw blade cutting assembly moves more stably to cut the stone.

[0035] On the bottom surface of the partition 13 of the first support beam 1 of the present utility model, a plurality of first reinforcing plates 18 supporting above the first connecting rod 123 and the second connecting rod 124 are arranged at intervals. The inner side plate 111 and the outer side plate 112 are respectively provided with a plurality of first through holes 181 for the two ends of the first reinforcing plate 18 to be inserted. And the first through holes 181 are arranged at intervals above the through hole 1111 or the slot 1121 and are not communicated with the through hole 1111 or the slot 1121. The first reinforcing plate 18 has a first protruding portion inserted into the first through hole 181. The first reinforcing plate 181 supports above the connecting rod 12, and the partition 13 supports above the first reinforcing plate 18, which can strengthen the structural strength and load-bearing capacity of the partition 13, so that the saw blade cutting assembly moves parallel and stably on the wire rail 14 to cut the stone. The first support beam 11 is provided with a bottom plate 113. On the top surface of the bottom plate 113, a plurality of second reinforcing plates 19 located below each connecting rod 12 are arranged at intervals. The inner side plate 111 and the outer side plate 112 are respectively provided with a plurality of second through holes 191 for the two ends of the second reinforcing plate 19 to be inserted. The second reinforcing plate 19 has a second protruding portion inserted into the second through hole 191. And the first reinforcing plate 18 and the second reinforcing plate 19 correspond to each other up and down. The first reinforcing plate 18 and the second reinforcing plate 19 can strengthen the rigidity of the first support beam 11 and further strengthen the structural strength of the cross beam 1.

[0036] On the inner side plate 111 of the present utility model, there is a welding window 1112 for a welding torch to extend in for welding. The welding window 1112 is located at the middle and lower position between the two through holes 1111. During welding, the welding torch extends in from the welding window 1112 to weld the connection between the connecting rod 12 and the outer side plate 112, and the welding is more convenient and fast.

[0037] On the first support beam 11 of the present utility model, two hoisting round tubes 2 are symmetrically arranged with the central axis as the axis of symmetry, and the hoisting round tubes 2 are located at the upper position between two of the first connecting rods 123 and the second connecting rods 124; circular perforations 21 for assembling and fixing the two ends of the hoisting round tubes 2 are respectively arranged on the inner side plate 111 and the outer side plate 112; when hoisting the cross beam, pass the hoisting rope through the two hoisting round tubes 2 on the two first support beams 11, and then bind the rope to the robotic arm of the hoisting equipment, and the cross beam 1 can be hoisted smoothly, which is convenient for hoisting and moving.

[0038] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the relevant technical field shall be regarded as not departing from the patent scope of the present utility model.

Claims

1. A bridge-type stone cutter crossbeam with high structural strength, characterized in that: The crossbeam has two first support beams and a plurality of connecting rods connecting the two first support beams in parallel. The connecting rods have a plurality of first connecting rods, a plurality of second connecting rods and a plurality of third connecting rods. The first connecting rods and the second connecting rods are arranged at equal intervals in the extension direction of the crossbeam, and the third connecting rods are arranged parallel to and below the first connecting rods.

2. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 1, characterized in that: The first connecting rod and the third connecting rod have the same structure; the longitudinal heights of the first connecting rod and the third connecting rod are smaller than the longitudinal height of the second connecting rod, and the transverse widths of the first connecting rod and the third connecting rod are larger than the transverse width of the second connecting rod.

3. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 1, characterized in that: Each of the first support beams has an inner plate and an outer plate arranged in parallel, the inner plate is provided with a plurality of through holes for a plurality of first connecting rods, a second connecting rod and a third connecting rod to pass through respectively, and the outer plate is provided with a slot corresponding to each of the first connecting rods, the second connecting rod and the third connecting rod; both ends of each of the first connecting rods, the second connecting rods and the third connecting rod are respectively provided with a butt top portion that butts against the inner side surface of the outer plate and a plug-in portion that is inserted into the slot of the corresponding outer plate, and the connection between the butt top portion and / or the plug-in portion and the outer plate is welded and fixed.

4. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 3, characterized in that: The connecting rod is a rectangular hollow tube. The first connecting rod, the second connecting rod and the third connecting rod are provided with four L-shaped plug-in parts protruding from the rectangular tube mouth and located on the four corners of the rectangular tube mouth. The outer plate is provided with four L-shaped slots for the L-shaped plug-in parts to be plugged in and matched.

5. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 4, characterized in that: The top side surfaces of the first connecting rod and the second connecting rod are located on the same horizontal plane.

6. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 5, characterized in that: A partition is provided in the first support beam, which is located above the first connecting rod and the second connecting rod, and a linear rail is provided on the partition; a second support beam is provided in the middle of the two first support beams and is mounted on the first connecting rod and the second connecting rod, and a rack is provided on the second support beam, and the two linear rails and the rack are arranged parallel to each other in the extension direction of the crossbeam.

7. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 6, characterized in that: The bottom surface of the partition of the first support beam is provided with a plurality of first reinforcing plates supported above each connecting rod, the inner plate and the outer plate are respectively provided with a plurality of first through holes for the two ends of the first reinforcing plate to be inserted, and the first through holes are arranged at intervals above the through holes or the slots and are not connected with the through holes or the slots, and the first reinforcing plate has a first protrusion inserted into the first through holes; the first support beam is provided with a bottom plate, and the top surface of the bottom plate is provided with second reinforcing plates located below each connecting rod, the inner plate and the outer plate are respectively provided with a plurality of second through holes for the two ends of the second reinforcing plate to be inserted, and the second reinforcing plate has a second protrusion inserted into the second through holes; and the first through holes and the second through holes correspond one to one in upper and lower directions.

8. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 4, characterized in that: The inner plate is provided with a welding window for the welding gun to extend into for welding, and the welding window is located at a lower middle position between the two through holes.

9. A bridge-type stone cutter crossbeam with high structural strength as claimed in claim 4, characterized in that: Two lifting circular tubes are symmetrically arranged on the first support beam with the central axis as the axis, and the lifting circular tubes are located at the upper position between the two first connecting rods and the second connecting rods; the inner plate and the outer plate are respectively provided with circular through holes for assembling and fixing the two ends of the lifting circular tubes.