Gear box output shaft clamping and key pressing device

Abstract

The utility model discloses a gear box output shaft clamping and key pressing device which comprises a shaft body supporting seat which comprises a supporting seat body and a shaft hole which is formed in the supporting seat body and is suitable for one end of an output shaft to be inserted. The lower jacking mechanism comprises a hollow cavity formed in the shaft body supporting seat and connected with the shaft hole in a penetrating mode, a pressing block arranged in the hollow cavity and suitable for abutting against the output shaft inserted into the shaft hole, and a driving assembly connected with the pressing block and used for driving the pressing block to move close to and away from the shaft hole relatively; the upper hydraulic mechanism comprises a receding hole, a positioning seat, a through groove and a false key positioning pressure head; the receding hole is formed in the top of the shaft body supporting seat, penetrates through the shaft hole and is suitable for part of the convex key to penetrate through; the positioning seat is fixed to the top of the shaft body supporting seat; the through groove is formed in the positioning seat and is suitable for part of the convex key to be placed in; according to the utility model, the press-fitting precision and the press-fitting efficiency can be synchronously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box processing technical field especially relates to a gear box output shaft clamping key press device. BACKGROUND

[0002] For part gear box used output shaft, it needs to assemble male key to better adapt other components to realize the transmission of torque. For the press fitting process between the male key and the output shaft, the existing technology generally adopts manual press fitting mode.

[0003] Regarding the manual press fitting mode, roughly speaking, the manual key is held by hand to align the keyway on the output shaft, and the key and the output shaft are matched by using a hammer. Specifically, the operator puts the key into the keyway and aligns the edge with the hammer, which not only slows down the installation speed, but also may cause the key to slide, uneven force to cause the key to be knocked or knocked, and the slot to be enlarged due to the skewed key, which may even cause the output shaft to be damaged due to the knocking of the output shaft.

[0004] In addition, the traditional manual key pressing operation can also cause gaps between the key and the shaft, which can further cause slipping phenomenon during torque transmission, affecting the rotation accuracy and stability of the output shaft. In addition, due to the slipping of the key, the bearing load is increased, which can cause the bearing to wear out prematurely and affect its service life. At the same time, this slipping phenomenon can also reduce the overall performance and accuracy of the gear box, and even affect the safe operation of the whole machine.

[0005] Therefore, for the press fitting process between the output shaft and the male key, it is necessary to design a device that can conveniently press the male key onto the output shaft to improve the press fitting accuracy and efficiency. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a gear box output shaft clamping key press device to solve the technical problem of simultaneously improving the press fitting accuracy and efficiency.

[0007] The gear box output shaft clamping key press device of the utility model is realized as follows:

[0008] A gear box output shaft clamping key press device comprises:

[0009] The shaft body support seat comprises a support body and a shaft hole suitable for the insertion of one end of the output shaft in the support body;

[0010] The lower top mechanism comprises a hollow cavity provided in the shaft body support seat and connected with the shaft hole, a pressing block provided in the hollow cavity and adapted to abut against the output shaft inserted in the shaft hole, and a driving assembly connected with the pressing block and used to drive the relative approaching and moving away of the pressing block relative to the shaft hole;

[0011] The upper hydraulic mechanism comprises a clearance hole provided on the top of the shaft body support seat and penetrating the shaft hole, a positioning seat fixed on the top of the shaft body support seat, a through slot provided in the positioning seat and adapted to accommodate the partial key, and a false key positioning ram adapted to be partially inserted into the through slot.

[0012] In the optional implementation of the utility model, the movement direction of the pressing block in the hollow cavity is perpendicular to the axial direction of the output shaft partially inserted in the shaft hole.

[0013] In the optional implementation of the utility model, the driving assembly comprises an extension rod partially inserted into the hollow cavity and used to connect the pressing block, and a linear motion executor connected with the part of the extension rod extending outside the hollow cavity.

[0014] In the optional implementation of the utility model, the end face of the pressing block facing the clearance hole is a circular arc surface adapted to the outer side wall of the output shaft.

[0015] In the optional implementation of the utility model, the false key positioning ram comprises a pressing portion used to press the key, and a stress portion connected with the pressing portion and used to bear the pressing action; wherein

[0016] The stress area of the stress portion is greater than the area of the end face of the pressing portion engaged with the key.

[0017] In the optional implementation of the utility model, the side end of the positioning seat away from the shaft body support seat is provided with a positioning slot in a recessed shape and connected with the through slot.

[0018] In the optional implementation of the utility model, a connecting portion is further provided between the stress portion and the pressing portion and partially inserted into the positioning slot; wherein

[0019] The end face of the stress portion facing the connecting portion is adapted to abut against the end face of the positioning seat away from the shaft body support seat.

[0020] In the optional implementation of the utility model, the positioning seat and the shaft body support seat are detachably matched.

[0021] In the optional implementation of the utility model, the positioning seat and the shaft body support seat are provided with a concave-convex matched limiting structure.

[0022] In optional implementation of the utility model, the gear box output shaft clamping and key pressing device further comprises a fixing frame for supporting a seat body connected with the output shaft.

[0023] By adopting the technical scheme, the gear box output shaft clamping and key pressing device has the following beneficial effects: the gear box output shaft clamping and key pressing device can press the key into the output shaft through cooperation of the lower jacking mechanism and the upper hydraulic mechanism, the overall process is high in efficiency and high in pressing precision, can be applied to processing requirements of batch products, and the pressing process can reduce abrasion of the key, the keyway and the output shaft, and avoid safety hazards of manual pressing operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole structure schematic view of the gear box output shaft clamping and key pressing device of the utility model;

[0025] Figure 2 It is a partial structure schematic view of the gear box output shaft clamping and key pressing device of the utility model;

[0026] Figure 3 It is a whole sectional structure schematic view of the gear box output shaft clamping and key pressing device of the utility model;

[0027] Figure 4 It is a structure schematic view of the upper pressing mechanism and the lower jacking mechanism of the gear box output shaft clamping and key pressing device of the utility model;

[0028] Figure 5 It is a structure schematic view of the positioning seat of the gear box output shaft clamping and key pressing device of the utility model;

[0029] Figure 6 It is a structure schematic view of the false key positioning pressing head of the gear box output shaft clamping and key pressing device of the utility model;

[0030] Figure 7 It is a structure schematic view of the pressing block of the gear box output shaft clamping and key pressing device of the utility model;

[0031] Figure 8 It is a structure schematic view of the output shaft suitable for the gear box output shaft clamping and key pressing device of the utility model.

[0032] In the drawing: output shaft 100, keyway 101, seat body 200, key 300, shaft body supporting seat 1, shaft hole 11, hollow cavity 12, let go of hole 13, fixing frame 2, pressing block 31, circular arc surface 311, extension rod 32, linear motion executor 33, positioning seat 4, through slot 41, positioning groove 42, false key positioning pressing head 5, stress part 51, pressure connection part 52, link part 53, operating handle 6, positioning pin 71, positioning hole 72. DETAILED DESCRIPTION

[0033] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawings, the utility model is further explained in detail.

[0034] Embodiment 1:

[0035] Please refer to Figures 1 to 8 As shown in the figure, the embodiment provides a gear box output shaft clamping key pressing device, comprising: the shaft body supporting seat 1, the lower jacking mechanism and the upper hydraulic mechanism used in cooperation;Wherein the lower jacking mechanism and the upper hydraulic mechanism cooperate to realize the clamping for the output shaft 100 and the key 300 pre-placed in the keyway 101 of the output shaft 100, so that the key 300 can be reliably fixed in the output shaft 100.

[0036] Next in detail, first of all, the shaft body supporting seat 1, including the supporting body and the shaft hole 11 suitable for the one end insertion of the output shaft 100 in the supporting body. The clearance fit state is formed between the shaft hole 11 and the output shaft 100 here, so that the output shaft 100 will not produce unintended rotation in the shaft hole 11 unless the output shaft 100 is artificially rotated, that is, the pre-fixing effect for the output shaft 100 is realized through the shaft hole 11.

[0037] Based on the above situation, it needs to be explained that for the output shaft 100, only one end is pre-fixed by the shaft body supporting seat 1, and the stability of the position state in the pressing process cannot be ensured, for this, the gear box output shaft clamping key pressing device adopted by the embodiment further comprises a fixing frame 2 for supporting the seat body 200 connected with the output shaft 100, so that the output shaft 100 is fixed by the two different support points of the shaft body supporting seat 1 and the seat body 200 cooperating with the fixing frame 2.

[0038] Next to be explained is the lower jacking mechanism, which comprises a hollow cavity 12 provided in the shaft body supporting seat 1 and connected with the shaft hole 11, a pressing block 31 provided in the hollow cavity 12 and suitable for abutting with the output shaft 100 inserted in the shaft hole 11, and a driving assembly connected with the pressing block 31 for driving it to move relatively close and relatively far away from the shaft hole 11. That is, the pressing block 31 will only move to the output shaft 100 inserted into the shaft hole 11 to make the pressing block 31 produce the abutting effect on the output shaft 100 from the lower side of the output shaft 100 when it is needed to cooperate with the upper hydraulic mechanism to press the key 300 into the output shaft 100, and after the pressing operation is completed, the pressing block 31 will move away from the output shaft 100, so that the operation of the output shaft 100 in and out of the shaft hole 11 is not interfered by the pressing block 31.

[0039] In more detail, the movement direction of the pressing block 31 is perpendicular to the axial direction of the output shaft 100 partially inserted into the shaft hole 11, so that the lifting movement of the pressing block 31 in the hollow cavity 12 relative to the axial direction of the output shaft 100 realizes the effect of relative approaching and moving away of the pressing block 31 relative to the output shaft 100.

[0040] Based on this situation, in combination with an example of an optional case shown in the drawings, the driving assembly includes an extension rod 32 for connecting the pressing block 31 partially extending into the hollow cavity 12, and a linear motion actuator 33 connected to the part of the extension rod 32 extending outside the hollow cavity 12. The linear motion actuator 33 here can be selected, for example but not limited to, a cylinder, and for the convenience of adjusting the movement state of the cylinder to accurately control the movement of the pressing block 31 relative to the output shaft 100, an operating handle 6 can be provided to control the movement state of the cylinder.

[0041] In addition, it should be noted that in order to enable the pressing block 31 to better produce the abutting effect on the output shaft 100 from below, the end surface of the pressing block 31 towards the accommodation hole 13 is designed as a circular arc surface 311 matching the outer side wall of the output shaft 100, so that sufficient matching area can be generated between the pressing block 31 and the output shaft 100, thereby ensuring reliable and stable abutting effect.

[0042] Next, the hydraulic mechanism is described, which includes an accommodation hole 13 provided on the top of the shaft body support seat 1 and penetrating the shaft hole 11, adapted for the partial key 300 to pass through, a positioning seat 4 fixed on the top of the shaft body support seat 1, a through slot 41 provided in the positioning seat 4 and adapted for the partial key 300 to be inserted, and a false key positioning press head 5 adapted for being partially inserted into the through slot 41. The positioning seat 4 and the shaft body support seat 1 are detachably connected by, for example but not limited to, screws.

[0043] For this purpose, it should be noted that the accommodation hole 13 not only connects the through slot 41 in the positioning seat 4 and the shaft hole 11, but also extends along the axial direction of the shaft hole 11 at least to the insertion end of the shaft hole 11 towards the output shaft 100, so that when the output shaft 100 is withdrawn from the shaft body support seat 1 after the key 300 is pressed and fitted on the output shaft 100, the key 300 already pressed and fitted on the output shaft 100 can exit the shaft body support seat 1 through the above-mentioned accommodation hole 13.

[0044] The positioning seat 4 is designed to realize the alignment of the key 300 and the false key positioning press head 5, so that the key 300 and the false key positioning press head 5 can realize the relative position pre-positioning inside the positioning seat 4, and on the other hand, it can limit the overall movement trajectory of the false key positioning press head 5, and ensure that the false key positioning press head 5 can accurately realize the pressing of the key 300. For this purpose, the alignment accuracy between the through groove 41 on the positioning seat 4 and the key groove 101 in the output shaft 100 for pressing the key 300 directly affects the pressing accuracy and efficiency, so the accurate control of the installation angle of the positioning seat 4 relative to the shaft body support seat 1 is very important, therefore, the positioning seat 4 and the shaft body support seat 1 of the present example are provided with a concave-convex limiting structure. In combination with the drawings, an example is given, which can be a positioning pin 71 protruding from the shaft body support seat 1, and a positioning hole 72 provided in the positioning seat 4 and suitable for the insertion of the positioning pin 71.

[0045] On the basis of the above structure, further, the false key positioning press head 5 adopted by the present embodiment includes a pressing portion 52 for pressing the key 300, and a force receiving portion 51 connected with the pressing portion 52 for bearing the pressing action; wherein the force receiving area of the force receiving portion 51 is greater than the area of the end surface of the pressing portion 52 engaged with the key 300. Here, the area of the force receiving portion 51 is designed to be greater than that of the pressing portion 52, mainly by increasing the area of the force receiving portion 51 to reduce the risk of deformation of the false key positioning press head 5 when subjected to the action of the hydraulic machine.

[0046] In addition, it is also considered to improve the reliable pressing action of the false key positioning press head 5 on the key 300, so that the pressure of the hydraulic machine acting on the false key positioning press head 5 can be transmitted to the key 300 as much as possible, and the pressing efficiency of the key 300 and the output shaft 100 is improved. The present embodiment makes the following design for the matching mode between the positioning seat 4 and the false key positioning press head 5:

[0047] First, the side end of the positioning seat 4 away from the shaft body support seat 1 is provided with a positioning groove 42 in a recessed shape and connected with the through groove 41.

[0048] Secondly, the abutment part 53 is arranged between the stress part 51 and the press-fit part 52 and is partially inserted into the positioning groove 42; the end surface of the stress part 51 is adapted to abut against the end surface of the positioning seat 4 which is away from the shaft body support seat 1. The design mainly aims to prevent the problem of the protruding key 300 being deformed by excessive pressure of the hydraulic machine on the false key positioning press head 5, that is, when the pressure of the hydraulic machine on the false key positioning press head 5 is too large, the end surface of the positioning seat 4 which is away from the shaft body support seat 1 abuts against the stress part 51, so that the stress part 51 cannot enter the positioning groove 42, thus the excessive pressure of the hydraulic machine can only cause the deformation of the stress part 51 of the false key positioning press head 5, or at most the deformation of the false key positioning press head 5 and the positioning seat 4, thereby ensuring the reliable press-fitting between the protruding key 300 and the output shaft 100 to the maximum extent.

[0049] The specific use process of the gear box output shaft clamping and key pressing device of the embodiment is as follows:

[0050] Step S1: the pressing block 31 is away from the shaft hole 11 under the action of the linear motion actuator 33, one end of the output shaft 100 is inserted into the shaft hole 11 of the shaft body support seat 1, at this time the pressing block 31 does not contact the output shaft 100 inserted into the shaft hole 11, and the seat body 200 of the output shaft 100 is arranged on the fixed frame 2. Then the output shaft 100 is rotated so that the key groove 101 for mounting the protruding key 300 on the output shaft 100 can be aligned with the through groove 41 of the positioning seat 4, and thus the initial positioning of the output shaft 100 is completed.

[0051] Step S2: the protruding key 300 to be press-fitted is arranged in the through groove 41 of the positioning seat 4.

[0052] Step S3: the false key positioning press head 5 is manually arranged in the through groove 41 of the positioning seat 4, at this time the press-fit part 52 of the false key positioning press head 5 produces preliminary pushing on the protruding key 300, so that the protruding key 300 partially enters the key groove 101 of the output shaft 100.

[0053] Step S4: the pressing block 31 moves towards the side of the shaft hole 11 under the action of the linear motion actuator 33, so that the pressing block 31 gradually abuts against the output shaft 100 built in the shaft hole 11, that is, the pressing block 31 forms reliable support for the output shaft 100 from below.

[0054] Step S5: the hydraulic machine is aligned with the false key positioning press head 5, the stress part 51 of the false key positioning press head 5 is pressed by the hydraulic machine to produce pressure, so that the protruding key 300 and the output shaft 100 are firmly press-fitted into a combined part by the false key positioning press head 5.

[0055] Step S6: remove the false key positioning press head 5, and then control the linear motion executor 33 to drive the press block 31 to move away from the output shaft 100, so that the press block 31 returns to the initial position. Finally, the assembly in step S5 is removed from the shaft body support seat 1.

[0056] In summary, for the gear box output shaft clamping key device adopted in the embodiment, the false key positioning press head 5 is precisely pressed by using the positioning plate through the hydraulic machine pressure, the pressing precision is high, the pressing speed is fast, the work efficiency is improved, the labor cost is saved, the safety hidden danger is reduced, and the device is suitable for batch production. Meanwhile, the wear degree and safety hidden danger caused by the installation error and uncertainty of the male key 300 and the key groove 101 are also reduced.

[0057] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above is only a specific embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0058] In the description of the utility model, it should be understood that the terms indicating the position or location relationship are based on the position or location relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model.

[0059] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0060] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the drawings shown or the orientation or position relation commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0061] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0062] In the utility model, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

Claims

1. A gear box output shaft clamping keying device, characterized by, The application relates to a gear box output shaft clamping and pressing key device. The device comprises a shaft body supporting seat, a lower top mechanism and an upper hydraulic mechanism. The shaft body supporting seat comprises a supporting body and a shaft hole suitable for inserting one end of an output shaft. The lower top mechanism comprises a hollow cavity connected with the shaft hole, a pressing block suitable for abutting against the output shaft inserted in the shaft hole, and a driving assembly suitable for driving the pressing block to move relatively close to and away from the shaft hole.

2. The gearbox output shaft clamping key device of claim 1, wherein, The upper hydraulic mechanism comprises a clearance hole suitable for the partial key to pass through, a positioning seat fixed on the top of the shaft body supporting seat, a through slot suitable for the partial key to be inserted into, and a false key positioning pressing head suitable for being partially inserted into the through slot.

3. A gearbox output shaft clamping key device according to claim 1 or 2, characterised in that, The movement direction of the pressing block is perpendicular to the axial direction of the output shaft partially inserted in the shaft hole.

4. A gearbox output shaft clamping key device according to claim 1 or 2, characterised in that, The driving assembly comprises an extension rod for connecting the pressing block and a linear motion executor connected with the extension rod.

5. The gearbox output shaft clamping key device of claim 1, wherein, The end surface of the pressing block towards the clearance hole is a circular arc surface suitable for the outer wall of the output shaft. The false key positioning pressing head comprises a pressing part for pressing the key and a stress part connected with the pressing part.

6. A gearbox output shaft clamping key device according to claim 5, characterised in that, The stress area of the stress part is larger than the area of the end surface of the pressing part connected with the key.

7. A gearbox output shaft clamping key device according to claim 6, characterised in that, The side end of the positioning seat away from the shaft body supporting seat is provided with a positioning slot in a concave shape and connected with the through slot. The stress part and the pressing part are further provided with a connecting part partially inserted into the positioning slot.

8. The gearbox output shaft clamping key device of claim 1, wherein, The end surface of the stress part towards the connecting part is suitable for abutting against the end surface of the positioning seat away from the shaft body supporting seat.

9. A gearbox output shaft clamping key device according to claim 1 or 8, characterised in that, The positioning seat and the shaft body supporting seat are detachably matched.

10. The gearbox output shaft clamping key device of claim 1, wherein, The positioning seat and the shaft body supporting seat are provided with concave-convex matched limiting structures. The gear box output shaft clamping and pressing key device further comprises a fixing frame for supporting the supporting body connected with the output shaft.

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