A gear assembly with adjustable backlash

Abstract

The application relates to the field of gear transmission, in particular to an adjustable side gap gear assembly, wherein the adjustable side gap gear assembly comprises an assembling part, the assembling part has a connecting end and an abutting end, the connecting end is provided with a plurality of uniformly distributed first connecting holes; the thick tooth part is further provided with a plurality of uniformly distributed first waist-shaped grooves, the plurality of first waist-shaped grooves correspond to the plurality of first connecting holes one by one; the thin tooth part is further provided with a plurality of uniformly distributed second waist-shaped grooves, the plurality of second waist-shaped grooves correspond to the plurality of first waist-shaped grooves one by one; a plurality of fasteners correspond to the plurality of second waist-shaped grooves one by one, one end of the fastener is sequentially threaded through the second waist-shaped groove, the first waist-shaped groove and is threadedly connected with the corresponding first connecting hole, and the other end of the fastener is pressed on the thin tooth part. The application can effectively utilize the structure configuration to realize whether the gear is deviated after the side gap is adjusted, can realize gear side gap transmission, has reasonable layout and high practicability.

Description

Technical Field

[0001] This application relates to the field of gear transmission, and more specifically to a gear assembly with adjustable backlash. Background Technology

[0002] In existing gear transmissions, the meshing teeth have a certain clearance (backlash), as shown in Figure 9. Therefore, when the gear transmission reverses, there is a period of idle time; the larger the clearance, the longer this idle time, and vice versa. In some high-precision applications, it is necessary to ensure that the meshing teeth have no backlash to meet instantaneous transmission requirements. The gear must be able to respond immediately when reversing to meet the transmission needs of certain high-precision fields. Although there are some gear sets on the market that can adjust gear backlash, users cannot immediately detect when the adjusted gear is misaligned under pressure, leading to production disruptions and losses. Furthermore, the larger the clearance of the meshing teeth, the greater the noise generated when the gear reverses; therefore, a smaller clearance can reduce the noise generated when the gear reverses.

[0003] Therefore, there is a need for an adjustable backlash gear assembly that can detect whether the gear has shifted after adjusting the backlash, achieve backlash-free gear transmission, has a reasonable layout, and is highly practical. Summary of the Invention

[0004] The main objective of this application is to provide an adjustable backlash gear assembly, wherein the adjustable backlash gear assembly can effectively utilize its own structural configuration to measure whether the gear will deviate after adjusting the backlash and achieve the advantage of backlash-free gear transmission.

[0005] Another objective of this application is to provide an adjustable backlash gear assembly, wherein the adjustable backlash gear assembly includes an assembly, a thick tooth, and a thin tooth. The assembly has a connecting end and a abutting end. The thick tooth is sleeved on the connecting end and fixedly connected to the abutting end. The thin tooth is also sleeved on the connecting end and contacts the thick tooth. The thin tooth is configured to be adjustable at a predetermined angle to achieve the purpose of reducing gear backlash or eliminating backlash.

[0006] Another object of this application is to provide an adjustable backlash gear assembly, wherein the adjustable backlash gear assembly includes at least two detection components, both of which are disposed on the thin gear and are configured to detect whether the thin gear is reversing.

[0007] Another objective of this application is to provide an adjustable backlash gear assembly, wherein the adjustable backlash gear assembly has a simple structure, is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economic efficiency, and is easy to promote and use.

[0008] To achieve at least one of the above-mentioned objectives, this application provides an adjustable backlash gear assembly, wherein the adjustable backlash gear assembly includes: An assembly having a connecting end and a abutting end, the connecting end being connected to the abutting end, and the connecting end having a plurality of evenly distributed first connecting holes; A thick toothed component is sleeved on the connecting end and fixedly connected to the abutting end. The thick toothed component also has a plurality of evenly distributed first waist-shaped grooves, and the plurality of first waist-shaped grooves correspond one-to-one with the plurality of first connecting holes. A thin toothed component is also sleeved on the connecting end and contacts the thick toothed component. The thin toothed component also has a plurality of evenly distributed second waist-shaped grooves, and the plurality of second waist-shaped grooves correspond one-to-one with the plurality of first waist-shaped grooves. Multiple fasteners, each corresponding to one of the multiple second waist-shaped grooves, with one end of each fastener passing through the second waist-shaped groove and the first waist-shaped groove in sequence, and threadedly connected to the corresponding first connecting hole, while the other end of the fastener presses the side of the thin toothed member away from the thick toothed member. The thin toothed component is configured to rotate at a predetermined angle, so that the teeth of the thin toothed component are misaligned with the teeth of the thick toothed component.

[0009] In one or more embodiments of this application, the connecting end further has two second connecting holes arranged vertically and two third connecting holes arranged horizontally and vertically, the thick toothed member further has a fourth connecting hole arranged vertically and two fifth connecting holes arranged horizontally and vertically, the two fourth connecting holes respectively correspond to the two second connecting holes, the two fifth connecting holes respectively correspond to the two third connecting holes, the thin toothed member has two sixth connecting holes arranged vertically and vertically and two seventh connecting holes arranged horizontally and vertically, the two sixth connecting holes correspond to the two fourth connecting holes, and the two seventh connecting holes correspond to the two fifth connecting holes.

[0010] In one or more embodiments of this application, the size of the third connecting hole is the same as the size of the fifth connecting hole, the size of the seventh connecting hole is larger than the size of the third connecting hole, the size of the fourth connecting hole is the same as the size of the sixth connecting hole, and the size of the second connecting hole is larger than the size of the fourth connecting hole.

[0011] In one or more embodiments of this application, the adjustable backlash gear assembly further includes two first inserts, each corresponding to one of the two sixth connecting holes. One end of each first insert passes through the sixth connecting hole and the fourth connecting hole in sequence and is placed in the second connecting hole. Both the sixth connecting hole and the fourth connecting hole are tightly fitted with the first insert.

[0012] In one or more embodiments of this application, the adjustable backlash gear assembly further includes two second inserts, each corresponding to one of the two third connecting holes. One end of each second insert passes through the third connecting hole and the fifth connecting hole in sequence and is placed inside the seventh connecting hole. Both the third connecting hole and the fifth connecting hole are tightly fitted with the second insert.

[0013] In one or more embodiments of this application, at least one of the second inserts has two oppositely arranged mounting slots, both of which are connected to the seventh connecting hole. The adjustable backlash gear assembly further includes at least two detection components, which are respectively placed in the two mounting slots.

[0014] In one or more embodiments of this application, the end of the second insert near the mounting groove further includes at least two insertion holes, each of which corresponds to one of the mounting grooves, and the insertion holes are connected to the mounting grooves.

[0015] In one or more embodiments of this application, each detection component includes a moving component, the moving component including a rotating rod and a squeezing tube, the rotating rod being threadedly connected to the insertion hole, one end of the rotating rod being placed in the mounting groove and the other end being placed outside, and the squeezing tube being placed in the mounting groove, with one end of the rotating rod being movably connected to the squeezing tube.

[0016] In one or more embodiments of this application, each of the detection components further includes a movable plate, which is movably placed in the mounting groove and spaced at a predetermined distance from the extrusion tube. The movable plate also has a pressure-receiving end on the side near the extrusion tube, and the pressure-receiving end has a guide surface. The top of the extrusion tube and the side near the pressure-receiving end have an extrusion surface, which is in contact with the guide surface.

[0017] In one or more embodiments of this application, each of the detection components further includes two elastic members and a detection element. One end of each of the two elastic members is fixedly connected to the inner wall forming the mounting groove, and the other end of each elastic member is fixedly connected to the side of the movable plate where the pressure end is provided, so as to ensure that the movable plate can be reset. The detection element is fixed to the side of the movable plate away from the elastic members by external screws. The detection component has a detection probe on the side away from the movable plate, and the detection probe is configured to contact the wall surface forming the seventh connection hole. Attached Figure Description

[0018] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein: Figure 1 The figure shows a schematic diagram of the engagement between an adjustable backlash gear assembly and a pinion.

[0019] Figure 2 The figure shows a schematic diagram of an adjustable backlash gear assembly.

[0020] Figure 3 The diagram shows a schematic representation of the mating parts.

[0021] Figure 4 The diagram shows a structural schematic of a thick-toothed component.

[0022] Figure 5 The diagram shows a schematic of the thin-tooth component.

[0023] Figure 6 The illustration shows a partial cross-section. Figure 1 .

[0024] Figure 7 The image shows a magnified view of a thin-toothed component after adjustment.

[0025] Figure 8 The illustration shows a partial cross-section. Figure 2 .

[0026] Figure 9 and Figure 10 Schematic diagram of gear tooth backlash. Detailed Implementation

[0027] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] While ordinal numbers such as "first," "second," etc., will be used to describe various components, this does not limit which components are used. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0031] Indicative adjustable backlash gear assembly refer to Figures 1 to 10 According to a preferred embodiment of the present invention, the adjustable backlash gear assembly includes an assembly 10, a thin tooth 30 and a thick tooth 20, wherein the thick tooth 20 is connected to the thin tooth 30 and the thin tooth 30 is also disposed on the assembly 10.

[0032] It should also be noted that the assembly 10 has a connecting end 11 and a supporting end 12. The connecting end 11 is connected to the supporting end 12, and the cross-sectional dimension of the supporting end 12 is larger than that of the connecting end 11. In addition, the thick toothed member 20 is sleeved on the connecting end 11, and one side of the thick toothed member 20 cooperates with the side of the supporting end 12 near the connecting end 11.

[0033] In addition, the center of the assembly 10 has a first mounting hole 101, and the first mounting hole 101 passes through the connecting end 11 and the abutting end 12 in sequence. The wall surface forming the first mounting hole 101 has a keyway. Those skilled in the art should understand that the first mounting hole 101 is keyed to the shaft of the external drive component, and the shaft of the external drive component can drive the assembly 10 to rotate. In addition, the abutting end 12 of the thick toothed member 20 is fixedly connected, so that when the assembly 10 rotates, the thick toothed member 20 rotates accordingly.

[0034] One side of the thin toothed member 30 engages with the side of the thick toothed member 20 that is away from the abutment end 12. It should be noted that the thin toothed member 30 is configured to be rotatable by a predetermined angle or fixed in place. Specifically, when the user needs the thin toothed member 30 to remain stationary, the thin toothed member 30 can overlap with the thick toothed member 20; when the user needs the thin toothed member 30 to rotate by a predetermined angle, the thin toothed member 30 can be misaligned with the thick toothed member 20.

[0035] In addition, the number of teeth of the thick toothed member 20 and the thin toothed member 30 are the same, and the gear tooth parameters are basically the same, except that the tooth width of the thick toothed member 20 is greater than the gear tooth width of the thin toothed member 30.

[0036] It should be noted that the adjustable backlash gear assembly also includes a pinion 40, and both the thin-toothed member 30 and the thick-toothed member 20 are meshed with the pinion 40. Those skilled in the art should understand that during gear transmission, there is a gap at the gear meshing point. Therefore, when the gear transmission reverses, there will be a certain time before the gear transmission can immediately reverse, resulting in errors. Specifically, as shown below... Figure 9-10 The diagram shows teeth A, B, C, and D. Teeth D is one of the teeth in the thin gear 30, and tooth C is one of the teeth in the thick gear 20. Teeth A and B are two connected teeth of the pinion 40, and teeth C and D overlap. Teeth C and D are positioned between teeth A and B. When the assembly 10 rotates counterclockwise, teeth C and D rotate counterclockwise synchronously, thus squeezing gear A. At this time, teeth C and D have a predetermined gap from tooth B. Therefore, when the assembly 10 rotates in reverse, teeth C and D need to move a predetermined distance to contact tooth B. That is, when the assembly 10 rotates in reverse, there will be a free-travel state, causing the gear transmission to not operate immediately. The larger the gap between teeth C and D and tooth B, the longer the free-travel time; conversely, the smaller the gap between teeth C and D and tooth B, the shorter the free-travel time. In some high-precision fields, it is necessary to ensure that there is no gap between the C or D teeth and the B teeth (in other words, the C teeth must be in contact with the B teeth, and the D teeth must be in contact with the A teeth) to ensure that feedback can be received immediately when the gear transmission reverses. In addition, if the gap between the C and D teeth and the B teeth is larger, the sound generated by the contact of the C and D teeth with the B teeth during reversal will be louder. If there is no gap, there will be no gear collision sound, thus effectively reducing the noise generated during gear transmission.

[0037] It should be noted that the connecting end 11 has a plurality of evenly distributed first connecting holes 1101, and the connecting end 11 also has two second connecting holes 1102 arranged vertically and two third connecting holes 1103 arranged horizontally, wherein the plurality of first connecting holes 1101, the two second connecting holes 1102 and the two third connecting holes 1103 all penetrate the connecting end 11.

[0038] It should be noted that the size of the third connecting hole 1103 is smaller than the size of the second connecting hole 1102, and the size of the second connecting hole 1102 is smaller than the size of the first connecting hole 1101.

[0039] In addition, the thick toothed member 20 has a stepped hole 201 on the side near the connecting end 11. The stepped hole 201 penetrates the thick toothed member 20, wherein the connecting end 11 passes through the stepped hole 201, and the stepped surface of the stepped hole 201 contacts the side of the abutting end 12 near the connecting end 11.

[0040] It should be noted that the thick toothed member 20 also has a plurality of evenly distributed first waist-shaped grooves 202, all of which penetrate the thick toothed member 20 and are located on the periphery of the stepped hole 201. Furthermore, each of the first waist-shaped grooves 202 corresponds one-to-one with a plurality of first connecting holes 1101. In addition, the thick toothed member 20 also has a fourth connecting hole 203 arranged vertically and two fifth connecting holes 204 arranged horizontally. Both the two fourth connecting holes 203 and the two fifth connecting holes 204 penetrate the thick toothed member 20. The two fourth connecting holes 203 correspond to the two second connecting holes 1102, and the two fifth connecting holes 204 correspond to the two third connecting holes 1103. Moreover, the fourth connecting holes and the fifth connecting holes have the same size.

[0041] It should be noted that the thickness of the thin gear 30 is less than the thickness of the thick gear 20, and the thin gear 30 has a second mounting hole 301 at its center. The connecting end 11 is placed inside the second mounting hole 301, and the end of the connecting end 11 facing away from the abutment end 12 is flush with the side of the thin gear 30 facing away from the thick gear 20. Simultaneously, the thin gear 30 and the thick gear 20 are in contact. It is worth mentioning that when the thin gear 30 and the thick gear 20 are in contact, their width is the same as that of the pinion 40.

[0042] In addition, the thin toothed member 30 also has a plurality of evenly distributed second waist-shaped grooves 302, the plurality of second waist-shaped grooves 302 corresponding one-to-one with the plurality of first waist-shaped grooves 202, and the thin toothed member 30 has two vertically arranged sixth connecting holes 303 and two horizontally arranged seventh connecting holes 304, the two sixth connecting holes 303 corresponding to the two fourth connecting holes 203, and the two seventh connecting holes 304 corresponding to the two fifth connecting holes 204.

[0043] It should be noted that the size of the third connecting hole 1103 is the same as the size of the fifth connecting hole 204, and the size of the seventh connecting hole 304 is larger than the size of the third connecting hole 1103. Furthermore, the size of the fourth connecting hole 203 is the same as the size of the sixth connecting hole 303, and the size of the second connecting hole 1102 is larger than the size of the fourth connecting hole 203.

[0044] It is worth mentioning that the adjustable backlash gear assembly also includes two first inserts (not shown in the figure). Each of the two first inserts corresponds one-to-one with one of the two sixth connecting holes 303. One end of each first insert passes through the sixth connecting hole 303 and the fourth connecting hole 203 sequentially and is placed within the second connecting hole 1102. Both the sixth connecting hole 303 and the fourth connecting hole 203 are tightly fitted with the first inserts, i.e., an interference fit. Furthermore, it should be noted that the two first inserts define the positions of the thin tooth 30 and the thick tooth 20, thereby ensuring that the teeth of the thick tooth 20 coincide with the teeth of the thin tooth 30 to form a single large gear.

[0045] In addition, the adjustable backlash gear assembly also includes two second inserts 50, each corresponding to one of the two third connecting holes 1103. One end of each second insert 50 passes through the third connecting hole 1103 and the fifth connecting hole 204 in sequence and is placed within the seventh connecting hole 304. Both the third connecting hole 1103 and the fifth connecting hole 204 are tightly fitted with the second insert 50, i.e., an interference fit, thereby ensuring that the thick-toothed member 20 rotates synchronously when the assembly 10 rotates.

[0046] It should also be noted that when the user uses the two first inserts and the two second inserts 50, the thin tooth 30, the thick tooth 20 and the assembly 10 together form the large gear, which meshes with the small gear 40. When the user needs to eliminate the gear misalignment, there is no need to assemble or remove the two second inserts 50. At the same time, the size of the second insert 50 is smaller than the size of the seventh connecting hole 304, so that the thin tooth 30 can rotate at a predetermined angle, thereby causing the teeth of the thin tooth 30 to be misaligned with the teeth of the thick tooth 20.

[0047] It should be noted that the adjustable backlash gear assembly also includes multiple fasteners 60, each corresponding to one of the multiple second waist-shaped grooves 302. One end of each fastener 60 passes through the second waist-shaped groove 302 and the first waist-shaped groove 202 in sequence, and is threadedly connected to the corresponding first connecting hole 1101. Simultaneously, the other end of the fastener 60 presses against the side of the thin tooth 30 away from the thick tooth 20, preventing the thin tooth 30 from deflecting after the user adjusts the angle. Furthermore, a corresponding waist-shaped washer 70 is provided on the side of each fastener 60 near the thin tooth 30, with each washer engaging with two of the fasteners 60 to ensure the tightening effect of the fasteners 60.

[0048] It should be noted that, in order to ensure that the user can know whether the thin gear 30, after being adjusted in angle, has reversed during long-term operation, at least one of the second inserts 50 has two oppositely arranged mounting grooves 501, and both mounting grooves 501 are connected to the seventh connecting hole 304.

[0049] Furthermore, the adjustable backlash gear assembly also includes at least two detection components 80, which are respectively placed in two mounting slots 501. The end of the second insert near the mounting slot 501 also has at least two insertion holes 502, which correspond one-to-one with the at least two mounting slots 501 and are connected to the mounting slots 501.

[0050] Furthermore, each detection component 80 includes a moving component, which includes a rotating rod 81 and a squeezing tube 82. The rotating rod 81 is threadedly connected to the insertion hole 502, with one end of the rotating rod 81 placed inside the mounting groove 501 and the other end placed outside. The squeezing tube 82 is placed inside the mounting groove 501, and one end of the rotating rod 81 is movably connected to the squeezing tube 82. Specifically, the inner diameter of the squeezing tube 82 is larger than the size of the rotating rod 81, and the connection between the squeezing tube 82 and the rotating rod 81 is through the outer wall of the squeezing tube 82 to ensure that the rotating rod 81 does not detach from the squeezing tube 82. Additionally, the inner wall of the squeezing tube 82 has an annular blocking portion that contacts the bottom of the rotating rod 81. Therefore, when the rotating rod 81 moves downward, the end of the rotating rod 81 squeezes the annular blocking portion, pushing the squeezing tube 82 downward.

[0051] Furthermore, each of the detection components 80 also includes a movable plate 83, which is movably placed in the mounting groove 501 and spaced at a predetermined distance from the extrusion tube 82. The movable plate 83 has a pressure-receiving end 831 on the side near the extrusion tube 82, and the pressure-receiving end 831 has a guide surface. The top of the extrusion tube 82 and the side near the pressure-receiving end 831 have an extrusion surface, which contacts the guide surface. Thus, when the extrusion tube 82 moves downward, the guide surface is subjected to the force of the extrusion surface, causing the movable plate 83 to move away from the extrusion tube 82.

[0052] It should be noted that each detection component 80 further includes two elastic members 84 and a detection element 85. One end of each elastic member 84 is fixedly connected to the inner wall forming the mounting groove 501, and the other end is fixedly connected to the side of the moving plate 83 where the pressure end 831 is located, to ensure that the moving plate 83 can be reset. The detection element 85 is fixed to the side of the moving plate 83 opposite to the elastic members 84 by external screws, and the detection component 80 has a detection probe 851 on the side opposite to the moving plate 83. In addition, the detection component 80 has a built-in wireless transmission module 90, and the wireless transmission module 90 is configured to send the detection signal to an external terminal.

[0053] Specifically, when the user adjusts the angle of the thin gear 30, regardless of whether the thin gear 30 rotates counterclockwise or clockwise, the user only needs to select the detection component 80 that is close to the wall forming the seventh connecting hole 304. Then, the user rotates the corresponding rotating rod 81, and at the same time, the extrusion tube 82 moves downward a predetermined distance, so that the moving plate 83 moves a predetermined distance away from the extrusion tube 82. At this time, the two elastic elements 84 are stretched, and the detection probe 851 contacts the wall forming the seventh connecting hole 304. If the thin gear 30 reverses, the contact probe no longer contacts the wall forming the seventh connecting hole 304. At this time, the wireless transmission module 90 sends a signal to an external terminal, and the user knows that the gear transmission is no longer backlash-free and needs maintenance. In addition, the detection element 85 can be a pressure sensor.

[0054] In summary, the adjustable backlash gear assembly based on the embodiments of this application is explained, which provides advantages such as detecting whether the gear has shifted after adjusting the backlash, achieving backlash-free gear transmission, reasonable layout, and high practicality.

[0055] It is worth mentioning that, in the embodiments of this application, the adjustable backlash gear assembly has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the adjustable backlash gear assembly provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0056] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from these principles.

Claims

1. A gear assembly with adjustable backlash, characterized in that, The adjustable backlash gear assembly includes: An assembly having a connecting end and a abutting end, the connecting end being connected to the abutting end, and the connecting end having a plurality of evenly distributed first connecting holes; A thick toothed component is sleeved on the connecting end and fixedly connected to the abutting end. The thick toothed component also has a plurality of evenly distributed first waist-shaped grooves, and the plurality of first waist-shaped grooves correspond one-to-one with the plurality of first connecting holes. A thin toothed component is also sleeved on the connecting end and contacts the thick toothed component. The thin toothed component also has a plurality of evenly distributed second waist-shaped grooves, and the plurality of second waist-shaped grooves correspond one-to-one with the plurality of first waist-shaped grooves. Multiple fasteners are provided, each corresponding to one of the multiple second waist-shaped grooves. One end of each fastener passes through the second waist-shaped groove and the first waist-shaped groove in sequence, and is threadedly connected to the corresponding first connecting hole. Meanwhile, the other end of the fastener presses against the side of the thin toothed member away from the thick toothed member. The connecting end also has two vertically arranged second connecting holes and two horizontally arranged third connecting holes. The thick toothed member also has vertically arranged fourth connecting holes and two horizontally arranged fifth connecting holes. The two fourth connecting holes correspond to the two second connecting holes, and the two fifth connecting holes correspond to the two third connecting holes. The thin toothed member has two vertically arranged sixth connecting holes and two horizontally arranged seventh connecting holes. The two sixth connecting holes correspond to the two fourth connecting holes, and the two seventh connecting holes correspond to the two fifth connecting holes. Two second inserts are provided, each corresponding to one of the two third connecting holes. One end of each second insert passes through the third connecting hole and the fifth connecting hole in sequence and is placed inside the seventh connecting hole. Both the third connecting hole and the fifth connecting hole are tightly fitted with the second inserts. At least one second insert has two oppositely arranged mounting grooves, both of which are connected to the seventh connecting hole. At least two detection components are respectively placed in two mounting slots, and each detection component includes a moving component, the moving component including a rotating rod and a squeezing tube, wherein the end of the second insert near the mounting slot also has at least two insertion holes, the at least two insertion holes correspond one-to-one with the at least two mounting slots, and the insertion holes are connected to the mounting slots, the rotating rod is threadedly connected to the insertion holes, one end of the rotating rod is placed in the mounting slot, the other end is placed outside, and the squeezing tube is placed in the mounting slot, and one end of the rotating rod is movably connected to the squeezing tube; The thin toothed component is configured to rotate at a predetermined angle, so that the teeth of the thin toothed component are misaligned with the teeth of the thick toothed component.

2. The adjustable backlash gear assembly according to claim 1, wherein the size of the third connecting hole is the same as the size of the fifth connecting hole, the size of the seventh connecting hole is larger than the size of the third connecting hole, the size of the fourth connecting hole is the same as the size of the sixth connecting hole, and the size of the second connecting hole is larger than the size of the fourth connecting hole.

3. The adjustable backlash gear assembly according to claim 2, wherein the adjustable backlash gear assembly further includes two first inserts, the two first inserts corresponding one-to-one with the two sixth connecting holes, wherein one end of the first insert passes through the sixth connecting hole and the fourth connecting hole in sequence and is placed in the second connecting hole, and the sixth connecting hole and the fourth connecting hole are both tightly fitted with the first insert.

4. The adjustable backlash gear assembly according to claim 3, wherein each of the detection assemblies further includes a movable plate, the movable plate being movably placed in the mounting groove, and the movable plate being spaced a predetermined distance from the extrusion tube, and the movable plate having a pressure-receiving end on the side near the extrusion tube, the pressure-receiving end having a guide surface, and the top of the extrusion tube having an extrusion surface on the side near the pressure-receiving end, the extrusion surface contacting the guide surface.

5. The adjustable backlash gear assembly according to claim 4, wherein each of the detection assemblies further comprises two elastic members and a detection element, one end of each of the two elastic members is fixedly connected to the inner wall forming the mounting groove, and the other end of each is fixedly connected to the side of the movable plate where the pressure end is provided, so as to ensure that the movable plate can be reset, and the detection element is fixed to the side of the movable plate away from the elastic members by external screws, and the side of the detection assembly away from the movable plate has a detection probe, and the detection probe is configured to contact the wall surface forming the seventh connecting hole.

Images