A high-strength motor gear for a casting sand core handling truss robot

Abstract

The invention discloses a high-strength motor gear for a casting sand core handling truss robot, comprising a box body, wherein a driving gear and a driven gear meshing with each other are arranged in the box body, wherein the driving gear is provided with a first gear tooth and a second gear tooth, wherein the second gear tooth is located on both sides of the first gear tooth, the second gear tooth is arranged obliquely, and the angle between the second gear tooth and the first gear tooth is 18°, wherein the driven gear is provided with a third gear tooth and a fourth gear tooth, wherein the first gear tooth meshes with the third gear tooth, and the second gear tooth meshes with the fourth gear tooth, wherein an oil outlet hole is arranged on the first gear tooth, an oil injection pipe connected with the oil outlet hole is arranged in the first gear tooth, the oil injection pipe penetrates the driving gear and is connected with an oil injection pump, and a rubber layer is arranged on the surface of the fourth gear tooth. The invention can improve the deficiencies of the prior art and increase the service life of the gear.

Description

Technical Field

[0001] The invention relates to a truss robot accessory, in particular to a high-strength motor gear for a casting sand core transporting truss robot arm. Background Art

[0002] When moving foundry sand cores, truss robots are usually used for operation. Due to the heavy weight of foundry sand cores, the motor gears of the truss robots are under heavy load during operation, which can easily lead to problems such as gear tooth breakage (deformation) or tooth surface wear (bonding), shortening the life of the gears. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-strength motor gear for a casting sand core handling truss robot arm, which can solve the deficiencies of the prior art and increase the service life of the gear.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0005] A high-strength motor gear for a casting sand core handling truss robot comprises a box body, wherein a driving gear and a driven gear meshing with each other are arranged in the box body, wherein the driving gear is provided with a first gear tooth and a second gear tooth, wherein the second gear tooth is located on both sides of the first gear tooth, the second gear tooth is arranged obliquely, and the angle between the second gear tooth and the first gear tooth is 18°, wherein a third gear tooth and a fourth gear tooth are arranged on the driven gear, wherein the first gear tooth meshes with the third gear tooth, and the second gear tooth meshes with the fourth gear tooth; an oil outlet hole is arranged on the first gear tooth, an oil injection pipe connected with the oil outlet hole is arranged in the first gear tooth, the oil injection pipe penetrates the driving gear and is connected with an oil injection pump, and a rubber layer is arranged on the surface of the fourth gear tooth.

[0006] Preferably, a first reinforcing rib is provided at the connection between the first gear tooth and the driving gear, the first reinforcing rib is parallel to the axial direction of the driving gear, a plurality of second reinforcing ribs parallel to each other are provided on the surface of the first gear tooth, the second reinforcing rib is connected to the first reinforcing rib, a plurality of through holes are provided in the second reinforcing rib, and an angle between the second reinforcing rib and the first reinforcing rib is 50°.

[0007] Preferably, the driving gear and the second gear teeth are respectively provided with strip-shaped through grooves, and the bolts pass through the strip-shaped through grooves and are locked with nuts to fix the second gear teeth on the driving gear.

[0008] Preferably, two blind holes are symmetrically arranged on the third gear tooth, the blind holes are inclined toward the center line of the third gear tooth, the angle between the axis of the blind hole and the surface of the third gear tooth is 30°, and a rubber column is connected to the blind hole through a spring body, and the rubber column is interference fit with the blind hole.

[0009] Preferably, a lubricating oil return pipe is provided at the bottom of the box body, the lubricating oil return pipe is connected to the oil storage tank, and the liquid inlet end of the oil injection pump is connected to the oil storage tank through a filter.

[0010] Preferably, a cooling water coil is provided at the bottom of the oil storage tank.

[0011] The beneficial effects brought by the above technical solution are: the present invention improves the uniformity of force on the gear surface by changing the meshing structure of the gear and using two sets of meshing structures. The oil injection pipe not only improves the anti-deformation strength of the driving gear, but also lubricates the tooth surface with lubricating oil to reduce the wear of the tooth surface. By setting the second reinforcing ribs and the first reinforcing ribs connected to each other, the stiffness of the tooth surface can be effectively improved, and the lubricating oil is guided by the through hole to improve the uniformity of the distribution of the lubricating oil on the tooth surface. The second gear teeth and the driving gear adopt a split design, and the installation angle and tooth shape of the second gear teeth can be changed according to the actual working conditions, so as to better adapt to the needs of different working conditions. At the same time, the gear teeth can be quickly replaced after the second gear teeth are worn, which is convenient for maintenance. The rubber column and the rubber layer are in contact with each other, which are used to correct the operation of the driving wheel and the driven wheel, and improve the smoothness of the gear operation. The present invention adopts a large flow lubricating oil injection method, which can not only use the lubricating oil to clean the impurities attached to the tooth surface, but also use the cooling function of the lubricating oil circulation process to effectively cool the tooth surface, thereby reducing the probability of wear / bonding on the tooth surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of a specific implementation mode of the present invention.

[0013] Figure 2 It is a structural diagram of the first gear tooth in a specific embodiment of the present invention.

[0014] Figure 3 It is a structural diagram of the second gear teeth in a specific embodiment of the present invention.

[0015] Figure 4 It is a structural diagram of the third gear tooth in a specific implementation manner of the present invention.

[0016] Figure 5 It is a structural diagram of the fourth gear tooth in a specific implementation manner of the present invention.

[0017] In the figure: 1, housing; 2, driving gear; 3, driven gear; 4, first gear teeth; 5, second gear teeth; 6, third gear teeth; 7, fourth gear teeth; 8, oil outlet hole; 9, oil filling pipe; 10, oil filling pump; 11, rubber layer; 12, first reinforcing rib; 13, second reinforcing rib; 14, through hole; 15, bolt; 16, nut; 17, blind hole; 18, spring body; 19, rubber column; 20, lubricating oil return pipe; 21, oil storage tank; 22, filter; 23, cooling water coil; 24, flaring; 25, arc guide groove; 26, notch; 27, strip through groove. DETAILED DESCRIPTION

[0018] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, and bonding in the prior art, which will not be described in detail here.

[0019] Reference Figure 1-5 A specific embodiment of the present invention includes a housing 1, in which a driving gear 2 and a driven gear 3 meshing with each other are arranged, the driving gear 2 is provided with a first gear tooth 4 and a second gear tooth 5, the second gear tooth 5 is located on both sides of the first gear tooth 4, the second gear tooth 5 is tilted, and the angle between the second gear tooth 5 and the first gear tooth 4 is 18°, the driven gear 3 is provided with a third gear tooth 6 and a fourth gear tooth 7, the first gear tooth 4 and the third gear tooth 6 mesh with each other, and the second gear tooth 5 and the fourth gear tooth 7 mesh with each other; an oil outlet hole 8 is arranged on the first gear tooth 4, an oil injection pipe 9 connected to the oil outlet hole 8 is arranged in the first gear tooth 4, the oil injection pipe 9 passes through the driving gear 2 and is connected to the oil injection pump 10, and a rubber layer 11 is arranged on the surface of the fourth gear tooth 7. A first reinforcing rib 12 is provided at the connection between the first gear tooth 4 and the driving gear 2. The first reinforcing rib 12 is parallel to the axial direction of the driving gear 2. A plurality of second reinforcing ribs 13 are provided on the surface of the first gear tooth 4, which are parallel to each other. The second reinforcing rib 13 is connected to the first reinforcing rib 12. A plurality of through holes 14 are provided in the second reinforcing rib 13. The angle between the second reinforcing rib 13 and the first reinforcing rib 12 is 50°. Strip-shaped through grooves 27 are provided on the driving gear 2 and the second gear tooth 5, respectively. The bolt 15 passes through the strip-shaped through groove 27 and is locked with the nut 16 to fix the second gear tooth 5 on the driving gear 2. Two blind holes 17 are symmetrically provided on the third gear tooth 6. The blind holes 17 are inclined toward the center line of the third gear tooth 6. The angle between the axis of the blind hole 17 and the surface of the third gear tooth 6 is 30°. A rubber column 19 is connected to the blind hole 17 through a spring body 18. The rubber column 19 is interference fit with the blind hole 17. A lubricating oil return pipe 20 is provided at the bottom of the box body 1, and the lubricating oil return pipe 20 is connected to the oil storage tank 21. The liquid inlet end of the oil injection pump 10 is connected to the oil storage tank 21 through a filter 22. A cooling water coil 23 is provided at the bottom of the oil storage tank 21.

[0020] In addition, a flare 24 is provided at the edge of the oil outlet 8, an arc-shaped guide groove 25 is provided on the surface of the flare 24, and a notch 26 is provided on the outer edge of the arc-shaped guide groove 25. When the lubricating oil is sprayed out from the oil outlet 8, a more uniform oil film is formed in the arc-shaped guide groove 25, and the notch 26 can improve the uniformity of the outward flow of the lubricating oil.

[0021] The relationship between the pressure angle α between the first gear teeth 4 and the third gear teeth 6 and the meshing angle β between the first gear teeth 4 and the third gear teeth 6 is: α=k*β, k is a proportional constant, and the value range is 0.12-0.35, preferably 0.15.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-strength motor gear for a casting sand core handling truss robot, comprising a housing (1), wherein a driving gear (2) and a driven gear (3) meshing with each other are arranged in the housing (1), characterized in that: The driving gear (2) is provided with a first gear tooth (4) and a second gear tooth (5), the second gear tooth (5) is located on both sides of the first gear tooth (4), the second gear tooth (5) is inclined, and the angle between the second gear tooth (5) and the first gear tooth (4) is 18°; the driven gear (3) is provided with a third gear tooth (6) and a fourth gear tooth (7), the first gear tooth (4) and the third gear tooth (6) are meshed with each other, and the second gear tooth (5) and the fourth gear tooth (7) are meshed with each other; the first gear tooth (4) is provided with an oil outlet hole (8), and an oil injection pipe (9) connected to the oil outlet hole (8) is provided in the first gear tooth (4), and the oil injection pipe (9) passes through the driving gear (2) The fourth gear tooth (7) is connected to the oil injection pump (10) at the back, and a rubber layer (11) is provided on the surface of the fourth gear tooth (7); two blind holes (17) are symmetrically provided on the third gear tooth (6), and the blind holes (17) are inclined toward the center line of the third gear tooth (6), and the angle between the axis of the blind hole (17) and the surface of the third gear tooth (6) is 30 degrees. A rubber column (19) is connected in the blind hole (17) through a spring body (18), and the rubber column (19) and the blind hole (17) are interference fit; a flared opening (24) is provided at the edge of the oil outlet hole (8), and an arc-shaped guide groove (25) is provided on the surface of the flared opening (24), and a notch (26) is provided on the outer edge of the arc-shaped guide groove (25).

2. The high-strength motor gear for a casting sand core handling truss robot according to claim 1, characterized in that: A first reinforcing rib (12) is provided at the connection between the first gear tooth (4) and the driving gear (2), the first reinforcing rib (12) is parallel to the axial direction of the driving gear (2), a plurality of mutually parallel second reinforcing ribs (13) are provided on the surface of the first gear tooth (4), the second reinforcing rib (13) is connected to the first reinforcing rib (12), a plurality of through holes (14) are provided in the second reinforcing rib (13), and the included angle between the second reinforcing rib (13) and the first reinforcing rib (12) is 50°.

3. The high-strength motor gear for a casting sand core handling truss robot according to claim 2, characterized in that: The driving gear (2) and the second gear teeth (5) are respectively provided with strip-shaped through grooves (27); the bolts (15) pass through the strip-shaped through grooves (27) and are locked with the nuts (16) to fix the second gear teeth (5) on the driving gear (2).

4. The high-strength motor gear for a casting sand core handling truss robot according to claim 1, characterized in that: The bottom of the box body (1) is provided with a lubricating oil return pipe (20), the lubricating oil return pipe (20) is connected to the oil storage tank (21), and the liquid inlet end of the oil injection pump (10) is connected to the oil storage tank (21) through a filter (22).

5. The high-strength motor gear for a casting sand core handling truss robot according to claim 4, characterized in that: A cooling water coil (23) is arranged at the bottom of the oil storage tank (21).

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