Helical tooth transmission mechanism with improved structure

Abstract

The utility model discloses a helical tooth transmission mechanism with an improved structure and belongs to the technical field of transmission mechanical equipment. Comprising a box body, the box body is provided with a box body inner cavity and is formed by splicing and connecting a left half shell and a right half shell, a left half shell mounting base is further formed in the upper portion of the left half shell, and a right half shell mounting base is formed in the upper portion of the right half shell; the input transmission part is arranged at the upper position of the inner cavity of the box body and can be in transmission connection with an external power input source, and the input transmission part is provided with an input transmission part bevel gear part; and the output transmission part is provided with an output transmission part helical tooth part and a supporting shaft part, and the output transmission part helical tooth part and the input transmission part helical tooth part are in transmission connection in a 45-degree helical tooth meshing mode. The utility model has the advantages of compact structure, simplicity and convenience in installation and disassembly, and tight and firm combination of all parts; and low-speed-ratio transmission is achieved, smoothness of power output is ensured, and the transmission device is suitable for various different severe working conditions and has remarkable popularization significance.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission mechanical equipment, and in particular relates to a helical gear transmission mechanism with improved structure. Background Art

[0002] In the existing mechanical transmission equipment, a worm gear box is usually used to realize the transmission of movement and power between two staggered axes. The worm gear box mainly includes a box body and a worm wheel and a worm gear arranged in the box body. The worm wheel and the worm gear are equivalent to the gear and the rack in the internal middle plane of the box body. The worm gear is similar to the shape of the screw. The worm gear box can be used to protect the normal meshing transmission of the worm wheel and the worm gear to prevent the external environment from causing adverse effects on the worm wheel and the worm gear. The worm gear transmission is equivalent to the spiral transmission, which is a multi-tooth meshing transmission, and it has a larger single-stage transmission ratio. Compared with the ordinary gear-shaped transmission device, it has a larger transmission performance and self-locking. However, the existing worm gear transmission mechanism still has some shortcomings during use, such as: it is impossible to achieve high-speed transmission, resulting in a slow final power output speed, which is not conducive to the application of faster response working conditions. At the same time, there is also poor running smoothness, and usually jitters and setbacks occur, resulting in poor overall stability during operation. Therefore, in order to solve the above problems, existing manufacturers have also designed a helical gear meshing transmission mechanism to realize the transmission between the two staggered shafts. Helical gear meshing is a meshing method between teeth, which is achieved through the meshing linkage of helical teeth. It is different from the worm gear transmission method, and the advantage of helical gear meshing is that it can effectively reduce the noise generated by the rotation; however, the existing helical gear transmission mechanisms generally have the disadvantage of unstable working performance, and also have the problems of complex internal structure, large space occupation and high production cost. At the same time, the assembly is often cumbersome, and there is also a situation where it cannot meet the use requirements of various scenarios.

[0003] In view of the above existing problems, it is necessary to carry out a reasonable design. To this end, the applicant has cleverly designed the following technical solutions. Utility Model Content

[0004] The purpose of the utility model is to provide a helical gear transmission mechanism with a simple and compact structure, stable and reliable transmission and structural improvement applicable to a screw transmission system, which helps to improve the convenience of assembly by optimizing the overall structure and ensure a tight and firm combination of the various components, and is conducive to achieving low-speed ratio transmission by setting a transmission component that realizes helical gear meshing and ensuring smooth operation and rapid responsiveness.

[0005] The purpose of the utility model is achieved in this way. A helical gear transmission mechanism with improved structure comprises: a box body, the box body has a box body inner cavity, and the box body is composed of a left half shell and a right half shell which are arranged opposite to each other on the left and right sides and are connected together, a left half shell mounting seat is formed at the upper part of the left half shell, and a right half shell mounting seat is formed at the upper part of the right half shell and corresponding to the right side of the left half shell mounting seat; an input transmission member, the input transmission member is arranged at the upper position of the box body inner cavity and can be connected to the external power input source, and the axial end portions of the input transmission member are rotatably connected to the left half shell mounting seat and the right half shell mounting seat respectively. The input transmission member also includes an input transmission member helical gear portion; and an output transmission member, wherein the output transmission member is arranged at the lower position of the inner cavity of the housing, and the axial direction of the output transmission member is maintained perpendicular to the axial direction of the input transmission member, and the output transmission member includes an output transmission member helical tooth portion and a support shaft portion extending outward from the front and rear end portions of the output transmission member helical tooth portion coaxially, and the output transmission member helical tooth portion and the input transmission member helical gear portion are connected to each other in a 45-degree helical gear meshing manner to achieve transmission connection, and the two support shaft portions are pivotally connected to the front and rear end portions of the housing body in a front-rear relative state, and an output transmission member center through hole that runs through its axial direction is also formed in the output transmission member.

[0006] In a specific embodiment of the present invention, a left half shell mounting seat inner cavity is formed inside the left half shell mounting seat, and a right half shell mounting seat inner cavity is also formed inside the right half shell mounting seat, the left half shell mounting seat inner cavity is arranged corresponding to the right half shell mounting seat inner cavity, and the input transmission member bevel gear portion on the input transmission member is cooperated and arranged in the cooperation cavity formed by the left half shell mounting seat inner cavity and the right half shell mounting seat inner cavity and can reciprocate therein.

[0007] In another specific embodiment of the utility model, a right half shell mounting seat fixing ear seat is formed at both front and rear ends of the upper part of the right half shell mounting seat, and a right half shell mounting seat fixing hole is provided on the two right half shell mounting seat fixing ears, and a left half shell fixing hole penetrating the thickness direction is correspondingly provided on the left half shell body, and a box fixing screw is also provided in the two right half shell mounting seat fixing holes, and the box fixing screws pass through the corresponding right half shell mounting seat fixing holes and are screwed together with the left half shell fixing holes, thereby realizing the fixed connection between the left half shell and the right half shell.

[0008] In another specific embodiment of the present invention, a left connecting shaft of the input transmission member is protruded at the center position of the side surface of the input transmission member bevel gear part of the input transmission member opposite to the left half shell, and the left connecting shaft of the input transmission member is coaxially arranged with the input transmission member bevel gear part; and a left half shell mounting seat pivot hole that runs through the thickness direction of the left half shell is correspondingly provided on the left half shell mounting seat of the left half shell, and the left connecting shaft of the input transmission member is rotatably mounted in the pivot hole of the left half shell mounting seat; a right connecting shaft of the input transmission member is protruded at the center position of the side surface of the input transmission member bevel gear part opposite to the right half shell, and the right connecting shaft of the input transmission member is coaxially arranged with the input transmission member bevel gear part, and a right half shell mounting seat pivot hole is also provided on the right half shell mounting seat of the right half shell, and the right connecting shaft of the input transmission member is rotatably mounted in the pivot hole of the right half shell mounting seat.

[0009] In another specific embodiment of the present invention, an input transmission member drive shaft hole is also opened inwardly on the surface of one end of the right connecting shaft of the input transmission member axially away from the helical gear part of the input transmission member, and the input transmission member drive shaft hole is used to achieve a mating connection with an external power transmission shaft.

[0010] In another specific embodiment of the present invention, a plurality of right half-shell mounting seat mating columns are protrudingly formed on the side surface of the right half-shell mounting seat facing the left half-shell mounting seat, and a plurality of left half-shell mounting seat mating holes are correspondingly opened on the left half-shell mounting seat. The plurality of right half-shell mounting seat mating columns can be inserted and matched in the corresponding left half-shell mounting seat mating holes, thereby realizing the insertion and positioning of the left half-shell and the right half-shell.

[0011] In a further specific embodiment of the present invention, a left half shell lower accommodating chamber is recessed inwardly at the lower position of the left half shell facing the right half shell, and a right half shell lower accommodating chamber is correspondingly formed at the lower position of the right half shell facing the left half shell, and the output transmission member beveled tooth portion of the output transmission member is fitted and arranged in a fitting groove formed by the lower accommodating chamber of the left half shell and the lower accommodating chamber of the right half shell and can reciprocate therein.

[0012] In a more specific embodiment of the present invention, a semicircular left half shell lower pivot hole is provided at both front and rear ends of the left half shell, and a semicircular right half shell lower pivot hole is provided at both front and rear ends of the right half shell, respectively. The support shafts at the front and rear ends of the output transmission member are respectively inserted into the matching holes formed by the corresponding left half shell lower pivot hole and the right half shell lower pivot hole and can reciprocate therein; and both support shafts of the output transmission member are sleeved A support shaft bushing is installed, and the support shaft bushing is snap-fitted into the matching hole formed by the corresponding left half shell lower pivot hole and the right half shell lower pivot hole, and the support shaft bushing abuts against the inner cavity wall of the left half shell lower accommodating cavity and the right half shell lower accommodating cavity, thereby realizing the pivotal connection between the output transmission member and the left half shell and the right half shell; and a support shaft washer is also sleeved on the shaft body of the support shaft and at the position corresponding to the position between the support shaft bushing and the helical tooth portion of the output transmission member.

[0013] In a further specific embodiment of the present invention, a left half-shell clamping positioning strip is protruded downwardly from the bottom of the left half-shell, and a left half-shell clamping groove is also provided on the left half-shell clamping positioning strip, and a right half-shell clamping positioning strip is also protruded downwardly from the bottom of the right half-shell and at a position corresponding to the left half-shell clamping positioning strip, and a right half-shell plug-in block extending toward the left half-shell is also formed on the right half-shell clamping positioning strip, and the shape of the right half-shell plug-in block is consistent with the shape of the left half-shell clamping groove The left and right half shells are adapted to each other, and the right half shell plug-in block can be plugged into the left half shell positioning groove, so as to realize the positioning connection between the left and right half shells; a box locking sleeve is also provided on the outer peripheral edge of the left and right half shell positioning strips, and a box locking sleeve locking groove is formed inside the box locking sleeve, and the matching body formed by the left and right half shell positioning strips can be snapped into the box locking sleeve locking groove, so that the box locking sleeve can lock and connect the left and right half shells together.

[0014] In yet another specific embodiment of the present invention, a protective cover body is provided at the lower position of the front and rear end surfaces of the box body, and the two protective cover bodies are snap-fitted with the left half shell and the right half shell; a plurality of left half shell end engaging blocks are convexly formed on the front and rear end surfaces of the left half shell, and a plurality of right half shell end engaging blocks are also convexly formed on the front and rear end surfaces of the right half shell, and a plurality of protective cover body engaging grooves are correspondingly opened on the protective cover body, and the left half shell end engaging blocks and the right half shell end engaging blocks can be engaged with the corresponding protective cover body engaging grooves, thereby realizing the positioning connection between the protective cover body and the left half shell and the right half shell.

[0015] After the utility model adopts the above structure, it has the following beneficial effects: firstly, the box body is composed of a left half shell and a right half shell which are arranged opposite to each other and are connected to each other, and the input transmission member and the output transmission member can be arranged in the inner cavity of the box body in an upper and lower relative state, the overall volume of the box body is small, the left half shell, the right half shell and the input transmission member and the output transmission member are easy to install and easy to disassemble, and at the same time, the components are tightly and firmly combined, the working implementation effect is good, and the sealing effect is good; secondly, the helical tooth part of the output transmission member and the helical gear part of the input transmission member are connected together by helical gear meshing, and the helical gear meshing has high motion accuracy and stability, and can effectively realize low-speed ratio transmission, and can realize faster response speed and high power and torque output, which is suitable for a variety of different harsh working conditions, ensuring that the final power output is smoother, and has significant promotion significance; thirdly, by arranging protective covers at the front and rear ends of the box body, the protective covers can effectively play a buffering and protective role during the movement of the box body, and further ensure the stability and safety during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure decomposition of the utility model;

[0019] Figure 4 It is a schematic diagram of the structural decomposition of the utility model at another angle.

[0020] In the figure: 1. box body, 11. box body cavity, 12. left half shell, 121. left half shell mounting seat, 1211. left half shell mounting seat cavity, 1212. left half shell mounting seat pivot hole, 1213. left half shell mounting seat plug hole, 122. left half shell fixing hole, 123. left half shell lower accommodating cavity, 124. left half shell lower pivot hole, 125. left half shell clamping positioning strip, 1251. left half shell clamping groove, 126. left half shell end fitting block, 13. right half shell, 131. right half shell mounting seat, 1311. right half shell mounting seat cavity, 1312. right half shell mounting seat fixing ear seat, 1313. right half shell mounting seat fixing hole, 1314. box body fixing screw, 1315. right half shell mounting seat pivot hole, 1316. Right half shell mounting seat plug-in column, 132. Right half shell lower accommodating cavity, 133. Right half shell lower pivot hole, 134. Right half shell clamping positioning strip, 1341. Right half shell plug-in block, 135. Right half shell end engaging block, 14. Box body locking sleeve, 141. Box body locking sleeve engaging groove, 15. Protective cover body, 151. Protective cover body engaging groove; 2. Input transmission member, 21. Input transmission member helical gear portion, 22. Input transmission member left connecting shaft, 23. Input transmission member right connecting shaft, 24. Input transmission member drive shaft hole; 3. Output transmission member, 31. Output transmission member helical gear portion, 32. Support shaft portion, 321. Support shaft portion bushing, 322. Support shaft portion gasket, 33. Output transmission member center through hole. DETAILED DESCRIPTION

[0021] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0022] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1 The positions shown are for reference only and thus cannot be understood as a special limitation on the technical solution provided by the present utility model.

[0023] See also Figures 1 to 4 , shows a structurally improved helical gear transmission mechanism, comprising: a box body 1, the box body 1 having a box body inner cavity 11, and the box body 1 is composed of a left half shell 12 and a right half shell 13 which are arranged opposite to each other on the left and right sides and are connected together, a left half shell mounting seat 121 is formed at the upper part of the left half shell 12, and a right half shell mounting seat 131 is formed at the upper part of the right half shell 13 and at the right side of the left half shell mounting seat 121.

[0024] The aforementioned improved helical gear transmission mechanism also includes an input transmission member 2, such as Figure 2 and Figure 3As shown in the figure, the input transmission member 2 is arranged at the upper position of the aforementioned casing inner cavity 11, the aforementioned input transmission member 2 is arranged at the upper position of the aforementioned casing inner cavity 11 and can realize transmission connection with an external power input source, and the axial end portions of the input transmission member 2 are respectively rotatably connected to the aforementioned left half shell mounting seat 121 and the right half shell mounting seat 131, and the input transmission member 2 also has an input transmission member helical gear portion 21; it also includes an output transmission member 3, the aforementioned output transmission member 3 is arranged at the lower position of the aforementioned casing inner cavity 11, and the axial direction of the output transmission member 3 is maintained in a vertical state with the axial direction of the input transmission member 2, and the output transmission member 3 has an output transmission member helical tooth portion 31 and a support shaft portion 32 extending outwardly from the front and rear end portions of the output transmission member helical tooth portion 31 coaxially, the front The output transmission member helical gear portion 31 and the aforementioned input transmission member helical gear portion 21 are connected in a 45-degree helical gear meshing manner. The helical gear meshing has the advantages of good meshing performance, large overlap and compact structure, thereby ensuring that the transmission between the input transmission member 2 and the output transmission member 3 is smoother, and has the advantages of low noise and smooth power transmission. At the same time, the helical gear transmission has higher precision than the straight gear transmission. The two aforementioned support shaft portions 32 are pivotally connected to the front and rear end portions of the box body 1 in a front and rear relative state, and an output transmission member center through hole 33 that runs through its axial direction is also formed in the aforementioned output transmission member 3. The output transmission member center through hole 33 can be set as a threaded hole and meshed with the transmission screw passing therethrough, thereby driving the movement of the transmission screw through the rotation of the output transmission member 3.

[0025] Please continue to see Figures 2 to 4 A left half shell mounting seat inner cavity 1211 is formed inside the aforementioned left half shell mounting seat 121, and a right half shell mounting seat inner cavity 1311 is also formed inside the aforementioned right half shell mounting seat 131. The aforementioned left half shell mounting seat inner cavity 1211 is arranged corresponding to the aforementioned right half shell mounting seat inner cavity 1311, and the input transmission member bevel gear part 21 on the aforementioned input transmission member 2 is cooperated and arranged in the matching cavity formed by the left half shell mounting seat inner cavity 1211 and the aforementioned right half shell mounting seat inner cavity 1311 and can reciprocate therein.

[0026] Furthermore, a right half shell mounting seat fixing ear seat 1312 is formed at both front and rear ends of the upper part of the aforementioned right half shell mounting seat 131, and a right half shell mounting seat fixing hole 1313 is provided on the two aforementioned right half shell mounting seat fixing ear seats 1312, and a left half shell fixing hole 122 is correspondingly provided on the aforementioned left half shell 12 body that runs through its thickness direction, and a box fixing screw 1314 is also provided in the two right half shell mounting seat fixing holes 1313. The aforementioned box fixing screws 1314 pass through their respective corresponding right half shell mounting seat fixing holes 1313 and are screwed together with the aforementioned left half shell fixing holes 122, thereby realizing the fixed connection between the left half shell 12 and the right half shell 13.

[0027] In this embodiment, a left connecting shaft 22 of an input transmission member is convexly formed at the center position of the surface of the input transmission member bevel gear portion 21 of the aforementioned input transmission member 2 on one side opposite to the aforementioned left half shell 12. The left connecting shaft 22 of the input transmission member is coaxially arranged with the aforementioned input transmission member bevel gear portion 21; and a left half shell mounting seat pivot hole 1212 penetrating through the thickness direction of the left half shell mounting seat 121 is correspondingly provided on the left half shell mounting seat 121 of the aforementioned left half shell 12, and the aforementioned left connecting shaft 22 of the input transmission member is rotatably mounted on the left half shell mounting seat The right half shell 13 has a right connecting shaft 23 which is coaxial with the helical gear portion 21 of the input transmission member. A right half shell mounting seat pivot hole 1315 is also provided on the right half shell mounting seat 131 of the right half shell 13. The right connecting shaft 23 of the input transmission member is rotatably mounted in the right half shell mounting seat pivot hole 1315.

[0028] Furthermore, an input transmission member drive shaft hole 24 is provided inwardly on the surface of one end of the input transmission member right connecting shaft 23 axially away from the input transmission member bevel gear portion 21 , and the input transmission member drive shaft hole 24 is used to achieve a mating connection with an external power transmission shaft.

[0029] Please continue to see Figure 2 and Figure 3 as well as Figure 4 A plurality of right half shell mounting seat mating posts 1316 are protrudingly formed on the surface of the right half shell mounting seat 131 facing the left half shell mounting seat 121, and a plurality of left half shell mounting seat mating holes 1213 are correspondingly provided on the left half shell mounting seat 121. The plurality of right half shell mounting seat mating posts 1316 can be inserted in the corresponding left shell mounting seat mating holes 1213, thereby realizing the insertion and positioning of the left half shell 12 and the right half shell 13.

[0030] Furthermore, a left half shell lower accommodating chamber 123 is formed inwardly at the lower position of the left half shell 12 facing the right half shell 13, and a right half shell lower accommodating chamber 132 is correspondingly formed at the lower position of the right half shell 13 facing the left half shell 12. The output transmission member bevel tooth portion 31 of the output transmission member 3 is fitted and arranged in a fitting groove formed by the left half shell lower accommodating chamber 123 and the right half shell lower accommodating chamber 132 and can reciprocate therein.

[0031] In the present embodiment, a semicircular left half shell lower pivot hole 124 is provided at both front and rear ends of the aforementioned left half shell 12, and a semicircular right half shell lower pivot hole 133 is correspondingly provided at both front and rear ends of the lower part of the aforementioned right half shell 13. The support shaft portions 32 at the front and rear ends of the aforementioned output transmission member 3 are respectively inserted between the corresponding matching holes formed by the left half shell lower pivot hole 124 and the right half shell lower pivot hole 133 and can reciprocate therein; and a support shaft portion bushing 321 is mounted on each of the two support shaft portions 32 of the aforementioned output transmission member 3, and the aforementioned support shaft portion bushing 321 is snap-fitted and installed It is installed in the matching hole formed by the corresponding left half shell lower pivot hole 124 and the right half shell lower pivot hole 133, and the aforementioned support shaft bushing 321 abuts against the inner cavity walls of the aforementioned left half shell lower accommodating cavity 123 and the right half shell lower accommodating cavity 132, thereby realizing the pivotal connection between the output transmission member 3 and the left half shell 12 and the right half shell 13; and a support shaft washer 322 is also sleeved on the shaft body of the aforementioned support shaft 32 and at a position corresponding to the aforementioned support shaft bushing 321 and the output transmission member bevel tooth portion 31. The setting of the aforementioned support shaft washer 322 can ensure the smooth rotation of the aforementioned output transmission member 3.

[0032] Please refer to Figure 2 and Figure 3A left half shell clamping positioning strip 125 is formed on the bottom of the left half shell 12, and a left half shell clamping groove 1251 is formed on the left half shell clamping positioning strip 125. A right half shell clamping positioning strip 134 is formed on the bottom of the right half shell 13 and correspondingly at the position corresponding to the left half shell clamping positioning strip 125, and a right half shell plug-in block 1341 extending toward the left half shell 12 is formed on the right half shell clamping positioning strip 134. The shape of the right half shell plug-in block 1341 matches the shape of the left half shell clamping groove 1251, and the right half shell plug-in block 1341 is formed on the right half shell clamping positioning strip 134. Block 1341 can be inserted into the aforementioned left half shell positioning groove 1251, so as to realize the positioning connection between the left half shell 12 and the right half shell 13; a box locking sleeve 14 is also provided on the outer peripheral edge of the aforementioned left half shell positioning strip 125 and the right half shell positioning strip 134, and a box locking sleeve locking groove 141 is formed inside the box locking sleeve 14. The mating body formed by the aforementioned left half shell positioning strip 125 and the right half shell positioning strip 134 can be snapped into the box locking sleeve locking groove 141, so that the box locking sleeve 14 can lock and connect the left half shell 12 and the right half shell 13 together.

[0033] In this embodiment, a protective cover body 15 is also provided at the lower position of the front and rear end surfaces of the aforementioned box body 1. The two aforementioned protective cover bodies 15 are snap-fitted with the aforementioned left half shell 12 and the right half shell 13, and the protective cover body 15 is preferably made of soft cushioning material; a plurality of left half shell end engaging blocks 126 are convexly formed on the front and rear end surfaces of the aforementioned left half shell 12, and a plurality of right half shell end engaging blocks 135 are also convexly formed on the front and rear end surfaces of the aforementioned right half shell 13, and a plurality of protective cover body engaging grooves 151 are correspondingly opened on the aforementioned protective cover body 15, and the aforementioned left half shell end engaging blocks 126 and the right half shell end engaging blocks 135 can be engaged with the corresponding protective cover body engaging grooves 151, thereby realizing the positioning connection between the protective cover body 15 and the left half shell 12 and the right half shell 13.

[0034] Please continue to see Figure 1 and Figure 2 And focus on combining Figure 3 and Figure 4, the applicant briefly describes the working principle of the utility model: the worm gear transmission box in the present technical scheme is particularly suitable for the screw transmission structure, the transmission screw can be inserted into the aforementioned output transmission member center through hole 33 and be threadedly connected with the output transmission member 3, and a driving shaft that can be matched with the input transmission member drive shaft hole 24 on the input transmission member 2 is provided in the driving mechanism, and the driving mechanism is connected with an external driving motor, and the driving structure can drive the input transmission member 2 to rotate as a whole, and because the output transmission member helical tooth portion 31 and the input transmission member helical gear portion 21 are helical meshing, the input transmission member 2 can effectively drive the output transmission member 3 to transmit and make the helical gear transmission mechanism move back and forth on the transmission screw, and finally realize the movement of the corresponding module connected to the helical gear transmission mechanism; and the present technical scheme effectively improves the connection stability and overall strength of the helical gear transmission mechanism by optimizing the structure, and can realize low-speed ratio transmission and deceleration function, fast response, and has the advantages of stable operation and low noise, which has significant promotion significance.

[0035] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

[0036] In summary, the technical solution provided by the utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A helical gear transmission mechanism with improved structure, characterized in that: include: A housing (1), the housing (1) having a housing inner cavity (11), and the housing (1) is composed of a left half shell (12) and a right half shell (13) which are arranged opposite to each other on the left and right sides and are connected together, a left half shell mounting seat (121) is formed at the upper part of the left half shell (12), and a right half shell mounting seat (131) is formed at the upper part of the right half shell (13) and at the right side of the left half shell mounting seat (121); an input transmission member (2), the input transmission member (2) is arranged at the upper part of the housing inner cavity (11) and can be connected to an external power input source in a transmission manner, and the axial ends of the input transmission member (2) are respectively rotatably connected to the left half shell mounting seat (121) and the right half shell mounting seat (131), and the input transmission member (2) also has an input transmission member (2). an input transmission member helical gear portion (21); an output transmission member (3), the output transmission member (3) being arranged at a lower position of the inner cavity (11) of the housing, and the axial direction of the output transmission member (3) being maintained in a perpendicular state to the axial direction of the input transmission member (2), and the output transmission member (3) having an output transmission member helical tooth portion (31) and a support shaft portion (32) extending outwardly from front and rear end portions of the output transmission member helical tooth portion (31) in a coaxial manner, the output transmission member helical tooth portion (31) and the input transmission member helical gear portion (21) being connected to each other in a 45-degree helical tooth meshing manner, the two support shaft portions (32) being pivotally connected to the front and rear end portions of the housing (1) body in a front-rear relative state, and an output transmission member central through hole (33) penetrating the axial direction thereof is also formed in the output transmission member (3).

2. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A left half shell mounting seat inner cavity (1211) is formed inside the left half shell mounting seat (121), and a right half shell mounting seat inner cavity (1311) is also formed inside the right half shell mounting seat (131). The left half shell mounting seat inner cavity (1211) and the right half shell mounting seat inner cavity (1311) are arranged correspondingly, and the input transmission member bevel gear portion (21) on the input transmission member (2) is arranged in a matching cavity formed by the left half shell mounting seat inner cavity (1211) and the right half shell mounting seat inner cavity (1311) and can reciprocate therein.

3. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A right half shell mounting seat fixing ear seat (1312) is formed at both front and rear ends of the upper part of the right half shell mounting seat (131), and a right half shell mounting seat fixing hole (1313) is provided on the two right half shell mounting seat fixing ear seats (1312), and a left half shell fixing hole (122) is correspondingly provided on the left half shell (12) body that runs through the thickness direction thereof, and a box fixing screw (1314) is also provided in the two right half shell mounting seat fixing holes (1313), and the box fixing screw (1314) passes through the corresponding right half shell mounting seat fixing hole (1313) and then is screwed together with the left half shell fixing hole (122) to achieve fixed connection between the left half shell (12) and the right half shell (13).

4. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A left connecting shaft (22) of the input transmission member is convexly formed at the center position of the side surface of the input transmission member bevel gear portion (21) of the input transmission member (2) opposite to the left half shell (12), and the left connecting shaft (22) of the input transmission member is coaxially arranged with the input transmission member bevel gear portion (21); and a left half shell mounting seat pivot hole (1212) penetrating the thickness direction thereof is correspondingly provided on the left half shell mounting seat (121) of the left half shell (12), and the left connecting shaft (22) of the input transmission member is rotatably mounted in the left half shell mounting seat pivot hole. (1212); a right connecting shaft (23) of the input transmission member is convexly formed at the center position of the side surface of the input transmission member bevel gear portion (21) opposite to the right half shell (13), and the right connecting shaft (23) of the input transmission member is coaxially arranged with the input transmission member bevel gear portion (21), and a right half shell mounting seat pivot hole (1315) is also provided on the right half shell mounting seat (131) of the right half shell (13), and the right connecting shaft (23) of the input transmission member is rotatably mounted in the pivot hole (1315) of the right half shell mounting seat.

5. The helical gear transmission mechanism with improved structure according to claim 4, characterized in that: An input transmission member drive shaft hole (24) is also provided inwardly on the surface of one end of the input transmission member right connecting shaft (23) axially away from the input transmission member helical gear portion (21), and the input transmission member drive shaft hole (24) is used for mating connection with an external power transmission shaft.

6. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A plurality of right half-shell mounting seat mating columns (1316) are protrudingly formed on the surface of one side of the right half-shell mounting seat (131) facing the left half-shell mounting seat (121), and a plurality of left half-shell mounting seat mating holes (1213) are correspondingly provided on the left half-shell mounting seat (121). The plurality of right half-shell mounting seat mating columns (1316) can be inserted in the corresponding left half-shell mounting seat mating holes (1213), thereby realizing the insertion and positioning of the left half-shell (12) and the right half-shell (13).

7. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A left half shell lower accommodating chamber (123) is formed inwardly at the lower position of the left half shell (12) on the side facing the right half shell (13), and a right half shell lower accommodating chamber (132) is correspondingly formed at the lower position of the right half shell (13) on the side facing the left half shell (12). The output transmission member helical tooth portion (31) of the output transmission member (3) is arranged in a matching groove formed by the combination of the left half shell lower accommodating chamber (123) and the right half shell lower accommodating chamber (132) and can reciprocate therein.

8. The helical gear transmission mechanism with improved structure according to claim 7, characterized in that: A semicircular left half shell lower pivot hole (124) is provided at both front and rear ends of the left half shell (12), and a semicircular right half shell lower pivot hole (133) is provided at both front and rear ends of the right half shell (13), and the support shafts (32) at the front and rear ends of the output transmission member (3) are respectively inserted between the corresponding matching holes formed by the left half shell lower pivot hole (124) and the right half shell lower pivot hole (133) and can reciprocate therein; and a support shaft bushing (321) is mounted on each of the two support shafts (32) of the output transmission member (3), and the support shafts (32) are respectively inserted into the corresponding matching holes formed by the left half shell lower pivot hole (124) and the right half shell lower pivot hole (133). The support shaft bushing (321) is snap-fitted and installed in the matching hole formed by the corresponding left half shell lower pivot hole (124) and the right half shell lower pivot hole (133), and the support shaft bushing (321) abuts against the inner cavity wall of the left half shell lower accommodating cavity (123) and the right half shell lower accommodating cavity (132), thereby realizing the pivotal connection between the output transmission member (3) and the left half shell (12) and the right half shell (13); and a support shaft washer (322) is also sleeved on the shaft body of the support shaft (32) and at a position corresponding to the support shaft bushing (321) and the output transmission member helical tooth portion (31).

9. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A left half shell clamping positioning strip (125) is formed protruding downward at the bottom of the left half shell (12), and a left half shell clamping groove (1251) is also provided on the left half shell clamping positioning strip (125), and a right half shell clamping positioning strip (134) is also formed protruding downward at the bottom of the right half shell (13) and at a position corresponding to the left half shell clamping positioning strip (125), and a right half shell plug-in block (1341) extending toward the left half shell (12) is also formed on the right half shell clamping positioning strip (134), the shape of the right half shell plug-in block (1341) is adapted to the shape of the left half shell clamping groove (1251), and the right half shell plug-in block (1341) is provided on the right half shell clamping positioning strip (134). The left half shell (125) and the right half shell (13) are connected to each other by the locking groove (1251) of the left half shell. The left half shell (12) and the right half shell (13) are connected to each other by the locking groove (141) of the left half shell (125). The left half shell (125) and the right half shell (134) are connected to each other by the locking groove (141) of the locking groove (141). The left half shell (125) and the right half shell (134) are connected to each other by the locking groove (141) of the locking groove (141).

10. The helical gear transmission mechanism with improved structure according to claim 1, characterized in that: A protective cover body (15) is also provided at the lower position of the front and rear end surfaces of the box body (1), and the two protective cover bodies (15) are snap-fitted with the left half shell (12) and the right half shell (13); a plurality of left half shell end engaging blocks (126) are convexly formed on the front and rear end surfaces of the left half shell (12), and a plurality of right half shell end engaging blocks (135) are convexly formed on the front and rear end surfaces of the right half shell (13); and a plurality of protective cover body engaging grooves (151) are correspondingly provided on the protective cover body (15), and the left half shell end engaging blocks (126) and the right half shell end engaging blocks (135) can be engaged in the corresponding protective cover body engaging grooves (151), thereby realizing the positioning connection between the protective cover body (15) and the left half shell (12) and the right half shell (13).

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