Rear shell of gearbox

Abstract

The utility model relates to a gearbox rear shell which comprises a shell body, a mounting sealing face is arranged on one side of the shell body, a plurality of assembling holes are formed in the mounting sealing face, a first annular groove is formed in the mounting sealing face, an annular mounting pipe is arranged in the first annular groove, and a plurality of second annular grooves are formed in the annular mounting pipe. An annular mounting groove is formed in the top face of the annular mounting pipe, an opening of the annular mounting groove faces the direction away from the shell, a glue storage shell is arranged in the annular mounting pipe, and the top end of the glue storage shell extends out of the first annular groove. The problem that after the gearbox is maintained, the shell is difficult to glue can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of gearbox components, in particular to a rear housing of a gearbox. Background Art

[0002] The gearbox housing generally includes a front housing and a rear housing. During the production process of the gearbox, it is first necessary to assemble components such as speed-changing gears in the gearbox onto one of the housings, and then tighten the front and rear housings with bolts. However, before the housings are locked, a sealant needs to be applied to the connecting end faces of the front and rear housings using a sealant applicator to ensure that the overall seal of the reducer housing is good and there is no oil leakage.

[0003] If the gearbox needs to be repaired during use, it is necessary to open the two housings. At this time, the original sealant will be damaged. During the process of reassembling the housings after the gearbox is repaired, the repair shop needs to apply sealant again. However, most general repair shops do not have a sealant applicator and mostly use manual sealant application, which makes it impossible to ensure the uniformity of sealant application on the housing end faces during the sealant application process, thus affecting the sealing performance between the housings. Summary of the Utility Model

[0004] The present application provides a rear housing of a gearbox, which can effectively solve the problem of high difficulty in applying sealant to the housing after the gearbox is repaired.

[0005] The rear housing of a gearbox provided by the present application adopts the following technical solution:

[0006] A rear housing of a gearbox includes a housing body. One side of the housing body is provided with an installation sealing surface. A plurality of assembly holes are opened on the installation sealing surface. A first annular groove is opened on the installation sealing surface. An annular installation pipe is arranged in the first annular groove. An annular installation groove is opened on the top surface of the annular installation pipe. The opening of the annular installation groove faces away from the housing. A glue storage shell is arranged in the annular installation pipe. The top end of the glue storage shell extends out of the first annular groove.

[0007] By adopting the above technical solution, after the gearbox is disassembled and repaired, the annular installation pipe provided with the glue storage shell is placed in the first annular groove, and then the front gearbox housing and the rear gearbox housing are assembled. During the assembly of the front gearbox housing and the rear gearbox housing, the front gearbox housing will squeeze the glue storage shell, causing the glue storage shell to break, so that the sealant in the glue storage shell flows out and forms a sealing structure between the front gearbox housing and the rear gearbox housing. By setting the rear annular installation pipe, while ensuring the sealing performance of the sealant, the contact area between the sealant and the housing is reduced, so that it is convenient for maintenance personnel to pull the sealant off the housing during the repair process of the gearbox. At the same time, the setting of the annular installation pipe can also effectively reduce the possibility of the sealant breaking during the removal of the sealant, so that the maintenance personnel can complete the removal of the sealant at one time, further reducing the difficulty of removing the sealant. After the repair of the gearbox is completed, a new annular installation pipe and the glue outlet shell can be placed back into the first annular groove, without manual caulking, thus reducing the high caulking difficulty after the repair of the gearbox.

[0008] Preferably, a plurality of ejector pins are arranged on both side walls of the annular installation groove along the height direction of the annular installation pipe. An annular clamping groove is formed on the bottom wall of the annular installation groove. The bottom of the glue storage shell is provided with an annular clamping block for clamping and cooperating with the annular clamping groove. When the annular clamping block is clamped in the annular clamping groove, a certain gap is left between the glue storage shell and the plurality of ejector pins.

[0009] By adopting the above technical solution, during the process that the front gearbox housing squeezes the glue storage shell and causes the glue storage shell to break, the lower end of the glue storage shell will also be pressed and collided with the plurality of ejector pins. The plurality of ejector pins will pierce the glue storage shell and extend into the glue storage shell, so that the sealant in the glue storage shell wraps the housing, so that the sealant and the annular installation pipe are connected to each other to form a whole. Therefore, when the old sealant needs to be removed during the repair of the gearbox, the annular installation pipe can firmly wrap the surface of the sealant, thus effectively reducing the possibility of the sealant breaking during the removal of the sealant.

[0010] Preferably, the volumes of the plurality of ejector pins gradually increase from the end close to the side wall of the adjacent annular installation pipe to the end far from the side wall of the adjacent annular installation pipe, and the distances between the plurality of ejector pins and the side wall of the corresponding annular installation pipe gradually decrease from the side close to the bottom wall of the annular installation pipe to the side far from the bottom wall of the annular installation pipe.

[0011] By adopting the above technical solution, the connection stability between the sealant and the annular installation pipe is further enhanced.

[0012] Preferably, a plurality of elastic members are arranged in the glue storage shell. When the housing is assembled, the plurality of elastic members are deformed under pressure and drive the glue storage shell to deform towards the two side walls of the annular installation groove.

[0013] By adopting the above technical solution, a number of elastic members are provided to increase the deformation amount of the glue storage shell when it is squeezed by the front housing of the gearbox, so that a number of ejector pins can penetrate deeper into the sealant, thereby enhancing the connection firmness between the annular installation pipe and the sealant.

[0014] Preferably, the elastic member is an O-shaped elastic piece. The tops of a number of the O-shaped elastic pieces are fixedly connected to the inner wall of the top end of the glue storage shell, the bottoms of a number of the O-shaped elastic pieces are fixedly connected to the inner wall of the bottom end of the glue storage shell, and the left and right sides of a number of the O-shaped elastic pieces are abutted against the inner walls of the left and right sides of the glue storage shell.

[0015] By adopting the above technical solution, when the front housing of the gearbox squeezes the glue storage shell, it will also squeeze a number of O-shaped elastic pieces, causing the a number of O-shaped elastic pieces to deform and driving the glue storage shell to deform, so that a number of ejector pins can penetrate deeper into the sealant.

[0016] Preferably, two convex portions are respectively formed by protruding the two side walls of the top end of the glue storage shell. The two convex portions are respectively located on both sides of the first annular groove, and the bottoms of the two convex portions are respectively in contact with the installation sealing surface.

[0017] By adopting the above technical solution, when the front housing of the gearbox squeezes the glue storage shell, it will also squeeze and break the two convex portions of the glue storage shell, causing the two convex portions to break and the sealant inside the two convex portions to leak out and fill the gap between the front and rear housings of the gearbox. The setting of the convex portions can more effectively ensure that the sealant can effectively fill the gap between the front and rear housings of the gearbox.

[0018] Preferably, two second annular grooves are further formed on the installation sealing surface. The two second annular grooves are respectively located on both sides of the first annular groove, and the two convex portions are respectively located above the two first annular grooves.

[0019] By adopting the above technical solution, when the front housing of the gearbox squeezes the glue storage shell, it will also squeeze and break the two convex portions of the glue storage shell, causing the two convex portions to break and the sealant inside the two convex portions to flow into the two first annular grooves, thereby forming two annular sealing rings between the two housings of the gearbox and further enhancing the sealing performance between the two housings of the gearbox.

[0020] Preferably, the distance between the two side walls of the two second annular grooves gradually increases from the side close to the bottom of the corresponding second annular groove to the side far from the bottom of the corresponding second annular groove.

[0021] By adopting the above technical solution, it is convenient to take out the sealant from the two second annular grooves.

[0022] The technical effects of the present utility model are mainly reflected in the following aspects:

[0023] 1. The utility model reduces the contact area between the sealant and the housing while ensuring the sealing performance of the sealant by setting a rear annular mounting pipe, so that the solidified sealant can be easily removed from the housing during the subsequent maintenance of the transmission; at the same time, the setting of the annular mounting pipe can also effectively reduce the possibility of the sealant breaking when removing the sealant, so that the maintenance personnel can complete the sealant removal at one time, further reducing the difficulty of sealant removal;

[0024] 2. The utility model enhances the connection stability between the sealant and the annular mounting pipe by setting a number of thimbles on the annular mounting pipe;

[0025] 3. The utility model sets a number of O-shaped elastic pieces to make a number of thimbles penetrate more deeply into the sealant, thereby improving the connection firmness between the annular mounting pipe and the sealant. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural view of the product of Embodiment 1 of the present application.

[0027] Figure 2 is Figure 1 a partial cross-sectional view of the installation sealing surface part along the A-A line in.

[0028] Figure 3 is a schematic structural view of the installation sealing surface part of the product of Embodiment 2 of the present application.

[0029] Reference numerals: 1. Housing body; 11. Installation sealing surface; 12. Assembly hole; 13. First annular groove; 14. Second annular groove; 2. Annular mounting pipe; 21. Annular mounting groove; 22. Thimble; 23. Annular clamping groove; 3. Glue storage shell; 31. Annular clamping block; 32. Protruding part; 4. Elastic member; 41. O-shaped elastic piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following further describes the present application in detail with reference to the drawings to make the technical solutions of the present application easier to understand and master. Embodiment 1

[0031] Refer to Figure 1 and Figure 2, a rear housing of a gearbox in this embodiment includes a housing body 1. One side of the housing body 1 is provided with an installation sealing surface 11, and a number of assembly holes 12 are circumferentially and equidistantly arranged on the installation sealing surface 11. A first annular groove 13 is also opened on the installation sealing surface 11, and a ring-shaped installation pipe 2 is snap-connected in the first annular groove 13. The ring-shaped installation pipe 2 is a PVC plastic pipe. An annular installation groove 21 is opened on the top surface of the ring-shaped installation pipe 2, and the opening of the annular installation groove 21 faces away from the housing. An annular card slot 23 is also opened on the bottom wall of the annular installation groove 21, and a number of ejector pins 22 are fixedly connected to both side walls of the annular installation groove 21 along the height direction of the ring-shaped installation pipe 2. The volumes of the number of ejector pins 22 gradually increase from the end close to the side wall of the adjacent ring-shaped installation pipe 2 to the end far from the side wall of the adjacent ring-shaped installation pipe 2, and the distances between the number of ejector pins 22 and the side wall of the corresponding ring-shaped installation pipe 2 gradually decrease from the side close to the bottom wall of the ring-shaped installation pipe 2 to the side far from the bottom wall of the ring-shaped installation pipe 2.

[0032] Referring to Figure 1 and Figure 2 , a glue storage shell 3 is also installed in the annular installation groove 21. Sealant is contained in the glue storage shell 3, and the glue storage shell 3 is made of a brittle material. A number of elastic members 4 are fixedly connected in the glue storage shell 3. The number of elastic members 4 are O-shaped elastic pieces 41. The top ends of the number of O-shaped elastic pieces 41 are fixedly connected to the inner wall of the top end of the glue storage shell 3, the bottom ends of the number of O-shaped elastic pieces 41 are fixedly connected to the inner wall of the bottom end of the glue storage shell 3, and the left and right sides of the number of O-shaped elastic pieces 41 are abutted against the left and right inner walls of the glue storage shell 3. At the same time, a ring-shaped clamping block 31 for snap-fitting with the annular card slot 23 is fixedly connected to the bottom of the glue storage shell 3. The ring-shaped clamping block 31 is located below the number of O-shaped elastic pieces 41. When the ring-shaped clamping block 31 is snap-connected in the annular card slot 23, a certain gap is left between the glue storage shell 3 and the number of ejector pins 22, and the top end of the glue storage shell 3 extends out of the first annular groove 13.

[0033] During the assembly of the gearbox, the ring-shaped installation pipe 2 installed with the glue storage shell 3 is placed in the first annular groove 13, and then the front housing of the gearbox and the rear housing of the gearbox are assembled. During the assembly process of the front housing of the gearbox and the rear housing of the gearbox, the front housing of the gearbox will squeeze the glue storage shell 3 to make the glue storage shell 3 break, so that the sealant in the glue storage shell 3 flows out and forms a sealing structure between the front housing of the gearbox and the rear housing of the gearbox.

[0034] When assembling the transmission, the front housing of the transmission will also squeeze several O-ring elastic pieces 41 when squeezing the glue storage shell 3, causing the several O-ring elastic pieces 41 to deform and driving the glue storage shell 3 to deform and collide with several thimbles 22. The several thimbles 22 will pierce the housing and extend into the glue storage shell 3, so that the sealant in the glue storage shell 3 wraps the housing, thereby connecting the sealant and the annular mounting pipe 2 to make the two into a whole. Thus, when the old sealant needs to be removed during transmission maintenance, the annular mounting pipe 2 can firmly wrap the surface of the sealant, effectively reducing the possibility of the sealant breaking during sealant removal and reducing the difficulty of removing the sealant.

[0035] Embodiment 2: The following technical features are added on the basis of Embodiment 1.

[0036] Referring to Figure 3 , two second annular grooves 14 are also formed on the installation sealing surface 11. The two second annular grooves 14 are respectively located on both sides of the first annular groove 13. The distance between the side walls on both sides of the two second annular grooves 14 gradually increases from the side close to the bottom of the corresponding second annular groove 14 to the side far from the bottom of the corresponding second annular groove 14. Two convex portions 32 are respectively formed on the side walls at both ends of the top of the glue storage shell 3. The two convex portions 32 are respectively located on both sides of the first annular groove 13 and above the two first annular grooves 13. The bottoms of the two convex portions 32 are both in contact with the installation sealing surface 11. When the front housing of the transmission squeezes the glue storage shell 3, it will also squeeze and break the two convex portions 32 of the glue storage shell 3, causing the two convex portions 32 to break so that the sealant in the two convex portions 32 flows into the two first annular grooves 13, thereby forming two annular sealing rings between the two housings of the transmission and further improving the sealing performance between the two housings of the transmission.

[0037] Of course, the above are only typical examples of the present application. In addition, the present application can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A rear housing of a transmission, comprising a housing body (1), one side of the housing body (1) is provided with a mounting sealing surface (11), and a plurality of assembly holes (12) are formed in the mounting sealing surface (11), and the characteristics are as follows: A first annular groove (13) is formed on the installation sealing surface (11). An annular installation pipe (2) is arranged in the first annular groove (13). An annular installation groove (21) is formed on the top surface of the annular installation pipe (2). The opening of the annular installation groove (21) faces away from the housing. A glue storage shell (3) is arranged in the annular installation pipe (2), and the top end of the glue storage shell (3) extends out of the first annular groove (13).

2. The rear housing of a gearbox according to claim 1, characterized in that: A plurality of ejector pins (22) are arranged on both side walls of the annular installation groove (21) along the height direction of the annular installation pipe (2). An annular clamping groove (23) is formed on the bottom wall of the annular installation groove (21). The bottom of the glue storage shell (3) is provided with an annular clamping block (31) for clamping and cooperating with the annular clamping groove (23). When the annular clamping block (31) is clamped in the annular clamping groove (23), a certain gap is left between the glue storage shell (3) and the plurality of ejector pins (22).

3. The rear housing of a gearbox according to claim 2, characterized in that: The volumes of the plurality of ejector pins (22) gradually increase from the end close to the side wall of the adjacent annular installation pipe (2) to the end far from the side wall of the adjacent annular installation pipe (2). The distances between the plurality of ejector pins (22) and the side wall of the corresponding annular installation pipe (2) gradually decrease from the side close to the bottom wall of the annular installation pipe (2) to the side far from the bottom wall of the annular installation pipe (2).

4. The rear housing of a gearbox according to claim 3, characterized in that: A plurality of elastic members (4) are arranged in the glue storage shell (3). When the housing is assembled, the plurality of elastic members (4) are compressed and deformed to drive the glue storage shell (3) to deform towards the two side walls of the annular installation groove (21).

5. The rear housing of a gearbox according to claim 4, characterized in that: The elastic member (4) is an O-shaped elastic sheet (41). The top ends of the plurality of O-shaped elastic sheets (41) are fixedly connected to the inner wall of the top end of the glue storage shell (3). The bottom ends of the plurality of O-shaped elastic sheets (41) are fixedly connected to the inner wall of the bottom end of the glue storage shell (3). The left and right sides of the plurality of O-shaped elastic sheets (41) are abutted against the left and right inner walls of the glue storage shell (3).

6. The rear housing of a gearbox according to claim 1, characterized in that: Two protruding portions (32) are respectively formed by protruding the two side walls at the top end of the glue storage shell (3). The two protruding portions (32) are respectively located on both sides of the first annular groove (13). The bottoms of the two protruding portions (32) are respectively in contact with the installation sealing surface (11).

7. A rear housing of a gearbox according to claim 6, characterized in that: Two second annular grooves (14) are further formed on the installation sealing surface (11). The two second annular grooves (14) are respectively located on both sides of the first annular groove (13). The two protruding portions are respectively located above the two first annular grooves (13).

8. The rear housing of a gearbox according to claim 7, wherein: The distances between the two side walls of the two second annular grooves (14) gradually increase from the side close to the bottom of the corresponding second annular groove (14) to the side far from the bottom of the corresponding second annular groove (14).

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