Assembling method of combined type shaft head wrench and speed reducer

Abstract

The invention belongs to the technical field of special shaft head wrenches for speed reducers, and discloses a combined type shaft head wrench and an assembling method of a speed reducer. The combined type shaft head spanner comprises a spanner body, an adapter and a liquid level meter. A mounting hole is formed in the wrench body, and the adapter is matched with the mounting hole in shape, so that the adapter can be detachably mounted in the mounting hole; the adapter is provided with a matching hole, and the matching hole is matched with the shaft head in shape, so that the adapter can be arranged on the shaft head in a sleeving mode to pull the shaft head to rotate. The liquid level meter is rotationally connected with the wrench body. During actual operation, the combined type shaft head wrench is compared with a key groove of the speed reducer, the liquid level meter is locked after the liquid level meter is rotated and adjusted to be in a horizontal state, then the combined type shaft head wrench is arranged at the key position of the shaft head in a sleeving mode through the matching hole, and the wrench body is wrenched till the liquid level meter is in the horizontal state again. According to the combined type shaft head wrench, the speed reducer is low in assembling difficulty, high in assembling efficiency and high in assembling precision.

Description

Technical Field

[0001] This invention relates to the field of special shaft end wrench for speed reducers, and in particular to a combined shaft end wrench and a method for assembling a speed reducer. Background Technology

[0002] A speed reducer, also known as a gearbox, is a core component in a transmission system that connects a power source (such as a motor or internal combustion engine) and a working machine (such as a conveyor belt, agitator, or machine tool spindle). Typically, a speed reducer needs to be replaced after a certain number of years of use in a transmission system. However, when replacing a speed reducer, there is often a positional misalignment between the key on the drive shaft and the keyway of the new speed reducer, making it impossible to directly install the new speed reducer onto the drive shaft. Therefore, the drive shaft needs to be rotated a certain angle to allow the key and keyway to mate smoothly, thus enabling the speed reducer to be installed correctly.

[0003] However, in the existing technology, a regular adjustable wrench is usually used to rotate the drive shaft head to a rough angle. During the operation, the mating surfaces of the key will be damaged to some extent, making it difficult to install the reducer. Furthermore, the rotation angle is not precise, which further increases the difficulty of installing the reducer. Summary of the Invention

[0004] The first objective of this invention is to provide a combined shaft end wrench for turning the shaft end of a drive shaft to assemble a speed reducer, thereby reducing the assembly difficulty, increasing the assembly efficiency, and improving the assembly accuracy of the speed reducer.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A combination shaft end wrench, used to turn the shaft end of a drive shaft to assemble a reducer, the combination shaft end wrench comprising:

[0007] A wrench body, wherein a mounting hole is provided at one end along a first direction, and the mounting hole extends along a second direction, wherein the first direction is perpendicular to the second direction;

[0008] The adapter head has a shape that matches the shape of the mounting hole, allowing the adapter head to be detachably installed in the mounting hole. The adapter head has a mating hole that extends along the second direction, and the shape of the mating hole matches the shape of the shaft head, allowing the adapter head to be fitted onto the shaft head to rotate the shaft head.

[0009] A liquid level, wherein the liquid level is rotatably connected to the wrench body, and the rotation axis of the liquid level is parallel to the second direction;

[0010] In actual operation, the combined shaft wrench is compared with the keyway of the reducer. The liquid level is rotated and adjusted until it displays a horizontal state and then locked. Then, the combined shaft wrench is fitted onto the keyed position of the shaft head through the mating hole. The other end of the wrench body is turned along the first direction until the liquid level is returned to the horizontal state.

[0011] As an optional technical solution for a combined shaft wrench, the liquid level includes a liquid tube and a housing. The liquid tube is filled with liquid and fixed inside the housing. Fasteners are inserted to connect the housing and the wrench body.

[0012] As an optional technical solution for a combined shaft wrench, the wrench body has a mounting groove on one side along a third direction, the bottom of the mounting groove has an arc-shaped mounting surface, the housing can be embedded in the mounting groove and adapted to the mounting surface, the center of the mounting surface is coaxial with the rotation axis of the housing, and the third direction is perpendicular to the first direction and the second direction respectively.

[0013] As an optional technical solution for a combination shaft wrench, the mounting groove is only through on one side of the second direction, the fastener is a screw, one end of the screw is fixed to the inner sidewall of the mounting groove along the second direction, and the other end of the screw passes through the housing and is connected to the nut;

[0014] And / or, the housing is provided with an arc-shaped waist hole, the waist hole being a concentric and parallel arc with the mounting surface, and the fastener being able to pass through the waist hole and connect to the wrench body.

[0015] As an optional technical solution for a combination shaft wrench, the adapter includes a head body and multiple locking heads. The multiple locking heads are evenly spaced along the outer circumference of the head body. The inner sidewall of the mounting hole is provided with multiple slots, and each slot corresponds to a locking head. The locking head can be locked into the corresponding slot.

[0016] As an optional technical solution for a combination shaft wrench, the mating hole includes a shaft hole and a key hole that are connected along the first direction, wherein the key hole is adapted to the key of the shaft head; wherein:

[0017] One of the card heads is directly opposite the keyhole along the first direction;

[0018] And / or, the head body has a first channel and a second channel respectively opened on both sides along the third direction, which are connected to the two ends of the key hole along the third direction. The first clamping member and the second clamping member can pass through the first channel and the second channel respectively and abut against both sides of the key on the shaft head to clamp the key on the shaft head. The third direction is perpendicular to the first direction and the second direction respectively.

[0019] As an optional technical solution for a combined shaft wrench, the wrench body includes an actuating part and a handle part. One end of the handle part along the first direction is detachably connected to the actuating part. The mounting hole is located in the actuating part, wherein:

[0020] The lever part includes a first arc segment and a second arc segment, which are engaged and spliced ​​along a third direction. The inner walls of the first arc segment and the second arc segment form the mounting hole, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0021] And / or, the handle portion includes a first straight segment and a second straight segment, the first straight segment and the second straight segment being spliced ​​together along a third direction, the third direction being perpendicular to the first direction and the second direction, respectively.

[0022] As an optional technical solution for a combined shaft wrench, the wrench body further includes a first locking member and a second locking member; the actuating part includes a first arc segment and a second arc segment, each of the first arc segment and the second arc segment having a first connecting lug at one end along the first direction, and each of the first arc segment and the second arc segment having a second connecting lug at the other end along the first direction; when the first arc segment and the second arc segment are engaged and spliced ​​along the third direction, the first locking member can lock the two first connecting lugs, and the second locking member can lock the two second connecting lugs; the inner walls of the first arc segment and the second arc segment form the mounting hole.

[0023] As an optional technical solution for a combination shaft wrench, the first connecting lug and the second connecting lug are both located in the middle of the lever part along the third direction, and the handle part is provided with a clamping groove, in which the two second connecting lugs can be locked.

[0024] And / or, the first locking member and the second locking member are respectively a first buckle and a second buckle, the first buckle engaging two first connecting ears, and the second buckle engaging two second connecting ears.

[0025] The second objective of this invention is to provide a method for assembling a speed reducer, which can improve the assembly efficiency and accuracy of the speed reducer.

[0026] To achieve this objective, the present invention adopts the following technical solution:

[0027] The assembly method of the speed reducer involves using the aforementioned combination shaft wrench to rotate the shaft head of the drive shaft by a certain angle so that the key of the shaft head corresponds to the keyway of the replacement speed reducer.

[0028] The beneficial effects of this invention are:

[0029] The present invention provides a combined shaft wrench comprising a wrench body, an adapter, and a liquid level. The adapter has a mating hole whose shape matches the shape of the shaft, allowing the adapter to be fitted onto the shaft to rotate it. Compared to ordinary adjustable wrenches that directly clamp the shaft end or key on the shaft, this adapter has a mating hole that matches the shaft, preventing damage to the key and reducing the difficulty of installing the reducer. Furthermore, the adapter can be detachably installed in the mounting hole of the wrench body, and can be machined with different mating holes for different reducer models, thus adapting to different reducers and improving the versatility of the combined shaft wrench. The liquid level is rotatably connected to the wrench body; rotating the liquid level to a horizontal position determines the required rotation angle of the shaft. Calibration and measurement are simple and highly accurate, thereby reducing the assembly difficulty of the reducer and improving its assembly efficiency and precision.

[0030] In actual operation, compare the combined shaft wrench with the keyway of the reducer, rotate and adjust the liquid level until it displays a horizontal state, and then lock the liquid level. The angle of rotation of the liquid level is the angle that the shaft head needs to rotate when assembling the reducer. Place the combined shaft wrench in the keyed position of the shaft head through the mating hole, and turn the other end of the wrench body until the liquid level is horizontal again. The key of the shaft head can be aligned with the keyway position on the reducer, so as to achieve quick and accurate installation of the reducer. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the combined shaft wrench provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the first half provided in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the second half provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the converter head provided in an embodiment of the present invention;

[0035] Figure 5 This is an exploded view of the first clamping member provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the first locking member provided in an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the second locking member provided in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the liquid level provided in an embodiment of the present invention.

[0039] In the picture:

[0040] 100. Wrench body; 111. First arc segment; 112. First straight segment; 113. Mounting slot; 114. Fastener; 115. First clamping element; 1151. First bolt; 1152. First clamping block; 1153. First extension rod; 1154. First elastic ring; 116. First connecting post; 121. Second arc segment; 122. Second straight segment; 123. Second connecting post; 124. Second clamping element; 131. First snap; 132. Second snap; 141. First connecting ear; 142. Second connecting ear; 200. Adapter head; 210. Head body; 211. First channel; 212. Second channel; 220. Clamp head; 300. Liquid level; 310. Liquid pipe; 320. Housing; 321. Waist hole. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0045] This embodiment provides a combined shaft end wrench, which is used to turn the shaft end of the drive shaft to assemble the reducer, making the assembly of the reducer easier, more efficient, and more accurate.

[0046] Specifically, such as Figures 1 to 8 As shown, the combined shaft wrench includes a wrench body 100, an adapter 200, and a liquid level 300. The wrench body 100 has a mounting hole at one end along a first direction, which extends along a second direction, perpendicular to the first direction. The adapter 200 is shaped to fit the mounting hole, allowing it to be detachably installed within it. The adapter 200 also has a mating hole extending along the second direction, the shape of which matches the shape of the shaft, allowing the adapter 200 to be fitted onto the shaft to rotate it. The liquid level 300 is rotatably connected to the wrench body 100, and its rotation axis is parallel to the second direction.

[0047] In actual operation, the combined shaft wrench is compared with the keyway of the reducer. Specifically, the keyhole of the mating hole is aligned with the keyway of the reducer. After rotating and adjusting the liquid level 300 until it displays a horizontal state, the liquid level 300 is locked. This ensures that the liquid level 300 is in a horizontal state as indicated by its liquid level display. The angle of rotation of the liquid level 300 during adjustment is the angle that the shaft head needs to rotate during reducer assembly. Then, the combined shaft wrench is fitted into the keyed position on the shaft head through the mating hole. The other end of the wrench body 100 is turned in the first direction until the liquid level 300 is horizontal again. At this point, the key on the shaft head is aligned with the keyway on the reducer, achieving quick and accurate installation of the reducer.

[0048] Based on the above design, the adapter 200 is provided with a mating hole whose shape matches the shape of the shaft head, allowing the adapter 200 to be fitted onto the shaft head to rotate it. Compared to ordinary adjustable wrenches that directly clamp the shaft head or key on the shaft head, this adapter 200 has a mating hole that matches the shaft head, avoiding damage to the key and reducing the installation difficulty of the reducer. Secondly, the adapter 200 can be detachably installed in the mounting hole of the wrench body 100. Different adapters 200 with different mating holes can be machined according to different reducer models, thus adapting to different reducers and improving the versatility of this combined shaft head wrench. The liquid level 300 is rotatably connected to the wrench body 100. Rotating the liquid level 300 to a horizontal state determines the required rotation angle of the shaft head. Calibration and measurement are simple and highly accurate, thereby reducing the assembly difficulty of the reducer and improving its assembly efficiency and precision.

[0049] It should be noted that the first direction is the length direction of the wrench body 100, which is the direction in which the two parts, the shaft head sleeve part and the operating force part, point to each other during the wrench operation; the second direction is the thickness direction of the wrench body 100, which is also the axial direction of the drive shaft during the wrench operation; the third direction is the width direction of the wrench body 100. Therefore, the first direction, the second direction, and the third direction are perpendicular to each other.

[0050] Optionally, the liquid level 300 includes a liquid tube 310 and a housing 320. The liquid tube 310 is filled with liquid and fixed inside the housing 320. Fasteners 114 pass through and connect the housing 320 and the wrench body 100. The liquid in the liquid tube 310 is always horizontal. When the liquid tube 310 and the liquid are at the same level, the liquid level 300 is in a horizontal state. The liquid tube 310 is installed on the wrench body 100 through the housing 320, which facilitates the installation and rotation adjustment of the liquid tube 310.

[0051] Furthermore, the wrench body 100 has a mounting groove 113 on one side along a third direction. The bottom of the mounting groove 113 has an arc-shaped mounting surface. The housing 320 can be embedded in the mounting groove 113 and is adapted to the mounting surface. The center of the mounting surface is coaxial with the rotation axis of the housing 320, and the third direction is perpendicular to the first and second directions respectively. The liquid level 300 is embedded in the mounting groove 113 to avoid occupying too much space, making the structure of the combined shaft wrench compact. The housing 320 is adapted to the mounting surface, and the center of the mounting surface is coaxial with the rotation axis of the housing 320. The mounting surface can limit the rotation angle of the housing 320, preventing the housing 320 from shifting positionally with the wrench body 100 during rotation and thus improving the accuracy of angle adjustment.

[0052] Optionally, the mounting groove 113 is only through on one side in the second direction. One end of the screw is fixed to the inner sidewall of the mounting groove 113 along the second direction, and the other end of the screw passes through the housing 320 and is connected to the nut. Compared with the mounting groove 113 not being through on both sides in the second direction, this one-side through-hole design facilitates the installation of the housing 320. Compared with the mounting groove 113 being through on both sides in the second direction, this structure allows the housing 320 to be connected to the sidewall of the wrench body 100 at the mounting groove 113 position along the second direction, which is convenient and has high connection strength.

[0053] Optionally, the housing 320 is provided with an arc-shaped waist hole 321. The waist hole 321 is a concentric and parallel arc with the mounting surface. The fastener 114 can pass through the waist hole 321 and connect to the wrench body 100. By changing the position of the fastener 114 in the waist hole 321, the housing 320 can be rotated. The mounting surface and the waist hole 321 together limit the rotation angle of the housing 320.

[0054] In this embodiment, the mounting groove 113 is only through one side in the second direction. One end of the screw is fixed to the inner sidewall of the mounting groove 113 along the second direction, and the other end passes through the waist hole 321 and is connected to the nut.

[0055] Optionally, the adapter 200 includes a head body 210 and multiple locking heads 220. The multiple locking heads 220 are evenly spaced along the outer periphery of the head body 210. The inner sidewall of the mounting hole is provided with multiple slots, and the slots correspond one-to-one with the locking heads 220. The locking heads 220 can be locked into the corresponding slots to realize the locking connection between the adapter 200 and the wrench body 100. The installation is convenient and the locking connection has high strength.

[0056] Furthermore, the inner wall of the mounting hole is clearance-fitted with the outer wall of the head body 210, and the chuck 220 is clearance-fitted with the chuck slot, facilitating the assembly of the adapter head 200. Therefore, to enhance the connection strength between the adapter head 200 and the wrench body 100, a pre-tightening hole is provided on the chuck head 220, and a fifth bolt passes through the wrench body 100 and the pre-tightening hole to fix the wrench body 100 and the adapter head 200.

[0057] For example, the number of card headers 220 (card slots) can be two, three, or four, etc.

[0058] In this embodiment, there are three card slots 220.

[0059] Optionally, the mating hole includes a shaft hole and a key hole that are connected along a first direction. The key hole is adapted to the key of the shaft head. The main body of the shaft head passes through the shaft hole, and the key of the shaft head can be engaged in the key hole.

[0060] In this embodiment, one of the aforementioned card heads 220 is directly opposite the keyhole along the first direction, that is, one card head 220 is set exactly opposite the keyhole, which increases the structural strength of the conversion head 200 at the location of the keyhole.

[0061] To facilitate the insertion of a mating hole into the shaft end of the drive shaft, and to ensure a clearance fit between the mating hole and the shaft end, before operating the wrench body 100, the adapter 200 needs to be fitted onto the shaft end or the key on the shaft end. The adapter 200 has a first channel 211 and a second channel 212 on both sides along the third direction, which are connected to the two ends of the key hole along the third direction. The first clamping member 115 and the second clamping member can respectively pass through the first channel 211 and the second channel 212 to abut against both sides of the key on the shaft end to clamp the key on the shaft end. The third direction is perpendicular to the first direction and the second direction, respectively.

[0062] Specifically, the first clamping member 115 includes a first bolt 1151 and a first clamping block 1152. The first clamping block 1152 is movably disposed within the first channel 211, and the first bolt 1151 passes through the wrench body 100 and is connected to the first clamping block 1152. The second clamping member 124 includes a second bolt and a second clamping block. The second clamping block is movably disposed within the second channel 212, and the second bolt passes through the wrench body 100 and is connected to the second clamping block. Tightening the first bolt 1151 and the second bolt can move the first clamping block 1152 away from or closer to each other to loosen or clamp the key on the shaft head, respectively.

[0063] Furthermore, the wrench body 100 has a first connecting post 116 and a second connecting post 123 on both sides along a third direction. Both the first connecting post 116 and the second connecting post 123 have threaded holes. The first clamping member 115 also includes a first extension rod 1153, with its two ends connected to a first clamping block 1152 and a first bolt 1151, respectively. The second clamping member 124 also includes a second extension rod, with its two ends connected to a second clamping block and a second bolt, respectively. When the first clamping block 1152 and the second clamping block clamp the key on the shaft head, the caps of the first bolt 1151 and the second bolt can abut against the top of the first connecting post 116 and the top of the second connecting post 123, respectively, ensuring that the first bolt 1151 and the second bolt rotate into place and preventing damage to the key on the shaft head. The first extension rod 1153 and the second extension rod can also reduce the length of the first bolt 1151 and the second bolt, avoiding the need for excessively long threaded holes.

[0064] In this embodiment, the first clamping member 115 further includes a first elastic ring 1154, which is sleeved on the first extension rod 1153 and its two ends abut against the first bolt 1151 and the first clamping block 1152 respectively; the second clamping member 124 further includes a second elastic ring, which is sleeved on the second extension rod and its two ends abut against the second bolt and the second clamping block respectively.

[0065] In this embodiment, there are two first channels 211 and two second channels 212. The two first channels 211 (second channels 212) are spaced apart along the second direction. There are also two first clamping members 115 and two second clamping members 124.

[0066] Optionally, the wrench body 100 includes an actuating part and a handle part, one end of the handle part being detachably connected to the actuating part along a first direction, and a mounting hole being located on the actuating part. Typically, a longer handle part is provided to make it easier to operate, but a longer handle part presents a problem of storage difficulty. This combined shaft wrench features a detachable connection between the actuating part and the handle part, making it convenient to disassemble and store them after use.

[0067] It should be noted that in addition to the inconvenience of storage, the long handle also has the problem of being too heavy. In order to reduce the weight of the handle, a perforated hole is provided in the handle, and the perforated hole extends along the first direction.

[0068] In this embodiment, the mounting groove 113 is located between the lever part and the hollow hole; and when the third direction is parallel to the vertical direction, the mounting groove 113 is located on the upper end face of the wrench body 100.

[0069] Optionally, the lever part includes a first arc segment 111 and a second arc segment 121, which are interlocked along a third direction. The inner walls of the first arc segment 111 and the second arc segment 121 form a mounting hole. Compared to a single circular lever part, this combined shaft wrench sets the lever part in two separate forms, the first arc segment 111 and the second arc segment 121, which is convenient for disassembling the lever part into the first arc segment 111 and the second arc segment 121 for storage after use.

[0070] Furthermore, the wrench body 100 also includes a first locking member and a second locking member; one end of the first arc segment 111 and the second arc segment 121 along the first direction is provided with a first connecting ear 141, and the other end of the first arc segment 111 and the second arc segment 121 along the first direction is provided with a second connecting ear 142. When the first arc segment 111 and the second arc segment 121 are fastened together along the third direction, the first locking member can lock the two first connecting ears 141, and the second locking member can lock the two second connecting ears 142. The inner walls of the first arc segment 111 and the second arc segment 121 form a mounting hole. The first connecting ear 141 and the second connecting ear 142 can increase the contact area of ​​the first arc segment 111 and the second arc segment 121, and also avoid damaging the main body of the first arc segment 111 and the second arc segment 121. The first connecting ear 141 and the second connecting ear 142 are connected by the first locking member and the second locking member respectively, thereby improving the connection strength of the first arc segment 111 and the second arc segment 121.

[0071] Furthermore, the first locking element and the second locking element are respectively the first buckle 131 and the second buckle 132. The first buckle 131 engages with the two first connecting ears 141, and the second buckle 132 engages with the two second connecting ears 142. The engagement connection is simple.

[0072] Of course, in other embodiments, the connection between the first arc segment 111 and the second arc segment 121 can be achieved by using bolts to connect the two first connecting ears 141 (second connecting ears 142).

[0073] To further increase the strength of the first buckle 131 connecting to the first connecting ear 141 and the strength of the second buckle 132 connecting to the second connecting ear 142, in this embodiment, the first buckle 131 and the first connecting ear 141 are also fastened by a third bolt, and the second buckle 132 is also fastened by a fourth bolt.

[0074] Optionally, the first arc segment 111 and the second arc segment 121 are of equal length, that is, they are semicircles respectively. In this way, the first connecting ear 141 and the second connecting ear 142 are both located in the middle of the lever part along the third direction, and the handle part is provided with a clamping groove, so that the two second connecting ears 142 can be locked in the clamping groove, further increasing the connection strength of the two connecting ears.

[0075] In this embodiment, the handle portion is located in the middle of the second connecting ear 142 along the second direction, and the two second buckles 132 are located on both sides of the handle portion in the second direction; the slot opposite to the key hole along the first direction is formed by splicing the half-groove of the first arc segment 111 and the half-groove of the second arc segment 121.

[0076] It should be noted that the first clamping member 115 and the second clamping member 124 are located on the first arc segment 111 and the second arc segment 121, respectively.

[0077] Similarly, the handle includes a first straight section 112 and a second straight section 122, which are spliced ​​together along a third direction.

[0078] The first straight segment 112 and the second straight segment 122 are two identical semi-straight segments. Therefore, the hollow hole is formed by the strip groove of the first straight segment 112 and the strip groove of the second straight segment 122. The clamping groove is formed by the first groove on the first straight segment 112 and the second groove on the second straight segment 122.

[0079] In other words, the entire wrench body 100 is formed by the interlocking and splicing of the first half and the second half.

[0080] This embodiment also provides a method for assembling a speed reducer, which can improve the assembly efficiency and accuracy of the speed reducer.

[0081] Specifically, the assembly method for this reducer involves using the aforementioned combination shaft wrench to rotate the drive shaft end at a certain angle so that the key on the shaft end aligns with the keyway of the replaced reducer. The actual operation steps are as follows:

[0082] First, compare the keyhole of the mating hole of the combined shaft wrench with the keyway of the new reducer to be replaced; loosen the nut and move the housing 320 along the arc length of the mounting surface (changing the position of the screw in the waist hole 321) to rotate and adjust the liquid level 300 until it displays the same level as the liquid in the liquid pipe 310. Then tighten the locking nut. At this time, the angle of rotation of the liquid level 300 during adjustment is the angle that the shaft head needs to rotate when assembling the reducer.

[0083] Then, by fitting the combination shaft wrench into the keyed position on the shaft head through the mating hole, the handle is turned until the liquid level 300 is level again. At this time, the key on the shaft head can be aligned with the keyway on the reducer. The reducer is then assembled so that the key on the shaft head is locked in the keyway of the reducer, achieving quick and accurate installation of the reducer.

[0084] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A combination spindle wrench for turning a spindle nose of a drive shaft to assemble a speed reducer, characterized by, The combined shaft head wrench comprises: a wrench body (100) provided with a mounting hole at one end in a first direction, the mounting hole being through in a second direction, the first direction being perpendicular to the second direction; a conversion head (200) in a shape matching that of the mounting hole, the conversion head (200) being detachably mounted in the mounting hole, the conversion head (200) being provided with a matching hole through in the second direction, the matching hole being in a shape matching that of the shaft head, the conversion head (200) being sleeved on the shaft head to turn the shaft head; a liquid level meter (300) rotationally connected with the wrench body (100), the rotation axis of the liquid level meter (300) being parallel to the second direction; in actual operation, the combined shaft head wrench is compared with the keyway of the speed reducer, the liquid level meter (300) is locked after being turned to a level display, the combined shaft head wrench is sleeved on the key position of the shaft head through the matching hole, and the wrench body (100) is turned to the other end in the first direction until the liquid level meter (300) is in the level state again.

2. The combination spindle head wrench of claim 1 wherein, The liquid level meter (300) comprises a liquid tube (310) containing liquid and a housing (320), the liquid tube (310) being fixed in the housing (320), and a fastener (114) being provided to connect the housing (320) and the wrench body (100).

3. The combination spindle head wrench of claim 2 wherein, The wrench body (100) is provided with a mounting groove (113) at one side in a third direction, the bottom of the mounting groove (113) being provided with a circular arc-shaped mounting surface, the housing (320) being embedded in the mounting groove (113) and matching the mounting surface, the center of the mounting surface being coaxial with the rotation axis of the housing (320), and the third direction being perpendicular to the first direction and the second direction.

4. The combination shaft head wrench of claim 3, wherein, The mounting groove (113) is only through at one side in the second direction, the fastener (114) is a screw rod, one end of the screw rod being fixed to the inner side wall of the mounting groove (113) in the second direction, and the other end of the screw rod being connected with a nut through the housing (320); and / or, the housing (320) is provided with a circular arc-shaped waist hole (321), the waist hole (321) and the mounting surface being concentric and parallel circular arcs, and the fastener (114) being capable of connecting with the wrench body (100) through the waist hole (321).

5. The combination shaft head wrench of claim 1, wherein, The conversion head (200) comprises a head body (210) and a plurality of clamping heads (220), the clamping heads (220) being uniformly arranged along the outer periphery of the head body (210), the inner side wall of the mounting hole being provided with a plurality of clamping grooves, the clamping grooves corresponding to the clamping heads (220) one by one, and the clamping heads (220) being capable of being clamped in the corresponding clamping grooves.

6. The combination shaft head wrench of claim 5, wherein, The matching hole comprises a shaft hole and a key hole communicated along the first direction, and the key hole is matched with the key of the shaft head; wherein: One of the clamping heads (220) is directly opposite to the key hole along the first direction; And / or, the head body (210) is provided with a first channel (211) and a second channel (212) on both sides of the head body (210) along a third direction, the first channel (211) and the second channel (212) are communicated with both ends of the key hole along the third direction, and the first clamping member (115) and the second clamping member (124) can abut against both sides of the key on the shaft head through the first channel (211) and the second channel (212) respectively to clamp the key on the shaft head, and the third direction is perpendicular to the first direction and the second direction respectively.

7. The combination spindle head wrench of any one of claims 1-6, wherein, The wrench body (100) comprises a wrenching part and a handle part, one end of the handle part is detachably connected with the wrenching part along the first direction, and the mounting hole is located in the wrenching part, wherein: The wrenching part comprises a first circular arc segment (111) and a second circular arc segment (121), the first circular arc segment (111) and the second circular arc segment (121) are spliced along a third direction, and the inner walls of the first circular arc segment (111) and the second circular arc segment (121) surround to form the mounting hole, and the third direction is perpendicular to the first direction and the second direction respectively; And / or, the handle part comprises a first straight segment (112) and a second straight segment (122), the first straight segment (112) and the second straight segment (122) are connected along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively.

8. The combination shaft head wrench of claim 7, wherein, The wrench body (100) further comprises a first locking member and a second locking member; the wrenching part comprises a first circular arc segment (111) and a second circular arc segment (121), one end of the first circular arc segment (111) and the second circular arc segment (121) along the first direction is provided with a first connecting lug (141), the other end of the first circular arc segment (111) and the second circular arc segment (121) along the first direction is provided with a second connecting lug (142), when the first circular arc segment (111) and the second circular arc segment (121) are spliced along the third direction, the first locking member can lock the two first connecting lugs (141), the second locking member can lock the two second connecting lugs (142), and the inner walls of the first circular arc segment (111) and the second circular arc segment (121) surround to form the mounting hole.

9. The combination shaft head wrench of claim 8, wherein, The first connecting lug (141) and the second connecting lug (142) are located in the middle of the wrenching part along the third direction, the handle part is provided with a clamping groove, and the two second connecting lugs (142) can be clamped in the clamping groove; And / or, the first locking member and the second locking member are a first buckle (131) and a second buckle (132) respectively, the first buckle (131) clamps the two first connecting lugs (141), and the second buckle (132) clamps the two second connecting lugs (142).

10. A method of assembling a speed reducer, characterized by, The combination axle head wrench of any one of claims 1-9 is used to rotate the axle head of the drive shaft by an angle such that the key of the axle head corresponds to the keyway of the replacement reduction gear.

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