Auxiliary fixing device for belt assembly
By designing an auxiliary fixing device for belt assembly and utilizing pressure plates and vision sensors for detection, the problems of belt slippage and difficulty in ensuring accuracy during belt assembly were solved, achieving an efficient and safe assembly process.
Patent Information
- Application Number
- CN202520057880.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-10
AI Technical Summary
During the timing belt assembly process, the belt is prone to springing off, leading to assembly failure, and the accuracy is difficult to guarantee. The operation is difficult and poses safety hazards.
An auxiliary fixing device was designed, including a fixing component and a pressing component. The timing belt is pressed tightly against the pulley using a pressure plate, and the alignment is detected by a vision sensor. An audible and visual alarm alerts the operator, improving assembly accuracy and safety.
It improves the convenience and efficiency of assembly, reduces the difficulty of operation, avoids belt slippage and safety accidents, and ensures assembly accuracy.
Smart Images
Figure CN223776973U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to engine assembly technical field relates to a kind of auxiliary fixing devices for belt assembly. BACKGROUND
[0002] Timing belt is an important component of automobile engine valve train system, and its main function is to ensure that all parts inside the engine work together at the right time. Timing belt is assembled manually during assembly, and the timing marks on the timing belt must be aligned with the timing marks on the crankshaft timing pulley, intake VCP and exhaust camshaft timing pulley during assembly. Since the belt is flexible, if the timing marks on the belt are aligned with the intake and exhaust timing marks by hand, the belt will pop out as soon as the hand is released, resulting in assembly failure. Moreover, the alignment of the timing marks on the belt with the intake and exhaust timing marks is strictly required, and it is entirely up to the worker to operate, with the risk of being right or wrong, and the precision is difficult to guarantee. After the worker completes the alignment of the crankshaft timing pulley and the belt marks, one hand needs to be used to hold the belt to prevent it from popping out, and the other hand needs to be used to operate and align the timing marks of the intake and exhaust. This operation is difficult, the assembly efficiency is low, and when the worker aligns the intake and exhaust pulleys with both hands, the lower crankshaft timing pulley is not fixed and is easy to slide off, causing damage to the parts and injury to the worker's feet, resulting in safety accidents.
[0003] To solve the above problems, an auxiliary device is needed that can temporarily fix the timing belt during assembly to prevent the timing belt from popping out, reduce the assembly difficulty and improve the assembly precision. UTILITY MODEL CONTENTS
[0004] Therefore, the utility model provides an auxiliary fixing device for belt assembly, which can press the timing belt against the pulley by setting the pressing piece, avoid the timing belt from popping out during assembly, and improve the convenience, efficiency and production rhythm of assembly.
[0005] The utility model discloses an auxiliary fixing device for belt assembly, which comprises a fixing assembly and a pressing assembly, the fixing assembly comprises a fixing claw, the fixing claw is detachably connected to a specified position, the pressing assembly comprises a pressing piece for pressing the belt against the pulley, and the pressing piece is installed on the fixing claw in a single-degree-of-freedom swinging manner.
[0006] Further, the fixing assembly further comprises a first cantilever, the pressing assembly further comprises a pressing column, the first cantilever is installed on the fixing claw, the pressing piece is hinged to the first cantilever, the pressing column is installed on the first cantilever in a vertical sliding manner, and the pressing column is used to drive the pressing piece to swing in a single-degree-of-freedom in a vertical plane.
[0007] Further, the detection assembly further comprises a visual sensor, and the fixed claw is fixedly provided with a second cantilever, and the first cantilever is provided on the fixed claw through the second cantilever, the second cantilever extends in a direction away from the tablet in a transverse direction and is bent to form a mounting rod, and the visual sensor is mounted on the mounting rod to detect whether the belt and the belt wheel are relatively displaced.
[0008] Further, the pressing assembly further comprises a clamping column, the tablet is in an arc structure, the first cantilever comprises a vertical rod arranged in a longitudinal direction and a horizontal rod arranged on a top of the vertical rod in a transverse direction, one end of the arc of the tablet is hingedly connected to a lower portion of the vertical rod, the other end of the arc of the tablet is located below the vertical rod, a bottom of the pressing column abuts against a top surface of the other end of the arc of the tablet after passing through the horizontal rod, and the clamping column is inserted into the horizontal rod and limits the pressing column in the longitudinal direction.
[0009] Further, the pressing assembly further comprises a first elastic member, a surface of the pressing column is provided with a ratchet in the longitudinal direction, an end of the clamping column is provided with a pawl matched with the ratchet, the pressing column is slidably inserted into the first cantilever in the longitudinal direction, the clamping column is slidably inserted into the first cantilever in the transverse direction in a manner that the pawl is matched with the ratchet, the first elastic member is sleeved on the clamping column, and the pawl of the clamping column abuts against the ratchet under the action of the elastic force of the first elastic member.
[0010] Further, the fixed assembly further comprises a second elastic member, the fixed claws are provided with two fixed claws that are hingedly connected to each other, bottom portions of the fixed claws are inwardly bent to form claw hooks, and the second elastic member is fixed to the two fixed claws at two ends thereof.
[0011] Further, a surface of the claw hook is covered with a buffer layer.
[0012] Further, the detection assembly further comprises an audible and visual alarm, the audible and visual alarm is mounted on the first cantilever, and the audible and visual alarm sends audible and visual alarms according to a detection result of the visual sensor.
[0013] The utility model discloses beneficial effects:
[0014] The utility model discloses a supplementary fixing device for belt assembly, through set up tablet to press the timing belt tightly on pulley, avoid its in the assembly process and pop, and cooperate fixed jaw to realize quick detachable installation, improve the convenience, efficiency and improve production rhythm of assembly, the utility model adds visual sensor detection timing, improve the assembly accuracy, simultaneously, the application of the utility model, avoid the worker busy feet and align three timing problems simultaneously, avoid the safety problem of crankshaft timing pulley falling and bruising and bruising worker's both feet. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the front view of the utility model;
[0016] Figure 2 It is the plan view of the utility model;
[0017] Figure 3 It is Figure 1 The partial close -up of A in middle;
[0018] Figure 4 It is Figure 1 The partial close -up of B in middle. DETAILED DESCRIPTION
[0019] It needs to be explained that in the description of the present application, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0020] As shown in the figure, the utility model discloses a supplementary fixing device for belt assembly, including fixed assembly and pressing assembly, fixed assembly includes fixed jaw 1, and fixed jaw 1 is detachably clamped in the set position, and pressing assembly includes the tablet 2 for pressing the belt tightly on pulley, and the tablet 2 is installed in the fixed jaw 1 in the single degree of freedom swing that can be driven.In this embodiment, the set position is engine, and the fixed jaw 1 is directly detachable and installed on the engine, and then the timing belt is pressed tightly on the pulley by driving the tablet 2 to swing and press down, avoiding it in the assembly process and pop, and cooperating with the fixed jaw 1 to realize quick detachable installation, improve the convenience, efficiency and improve production rhythm of assembly.
[0021] The fixed assembly further comprises a first cantilever 5, and the pressing assembly further comprises a pressing column 3. The first cantilever 5 is installed on the fixed claw 1, and the pressing plate 2 is hingedly connected to the first cantilever 5. The pressing column 3 is installed on the first cantilever 5 in a manner that can slide in the vertical direction, and is used to drive the pressing plate 2 to swing in a single degree of freedom in the vertical plane. The fixed assembly further comprises a second cantilever 8, which is fixedly installed on the fixed claw 1. The first cantilever 5 is installed on the fixed claw 1 through the second cantilever 8. The pressing assembly further comprises a clamping column 4. The pressing plate 2 has an arc structure. The first cantilever 5 comprises a vertical rod 502 arranged in the longitudinal direction and a horizontal rod 501 arranged on the top of the vertical rod 502 in the transverse direction. One end of the arc of the pressing plate 2 is hingedly connected to the lower part of the vertical rod 502, and the other end of the arc of the pressing plate 2 is below the vertical rod 502. The bottom of the pressing column 3 passes through the horizontal rod 501 and abuts against the top surface of the other end of the arc of the pressing plate 2. The clamping column 4 is inserted into the horizontal rod 501 and limits the pressing column 3 in the longitudinal direction. The pressing assembly further comprises a first elastic member 12. The surface of the pressing column 3 is provided with a ratchet tooth 301 in the longitudinal direction. The end of the clamping column 4 is provided with a pawl 401 that is engaged with the ratchet tooth 301. The pressing column 3 is inserted into the first cantilever 5 in the longitudinal direction. The clamping column 4 is inserted into the first cantilever 5 in the transverse direction in a manner that the pawl 401 is engaged with the ratchet tooth 301. The first elastic member 12 is sleeved on the clamping column 4. The pawl 401 of the clamping column 4 abuts against the ratchet tooth 301 under the elastic force of the first elastic member 12. As shown in the drawings, the first cantilever 5 has an inverted "L" shape structure formed by the horizontal rod 501 and the vertical rod 502. The bottom surface of the vertical rod 502 is fixed to the top surface of the second cantilever 8. The pressing plate 2 has an arc structure. One end of the arc is hingedly connected to the lower part of the vertical rod 502, and the other end of the arc is below the end of the horizontal rod 501. A longitudinal through hole is formed in the horizontal rod 501 near the end. The pressing column 3 is inserted into the through hole from top to bottom. The surface of the pressing column 3 is provided with a ratchet tooth 301 in the shape of a right triangle. The horizontal rod 501 is further provided with a transverse slot that communicates with the longitudinal through hole. The end of the clamping column 4 is provided with a pawl 401 that is engaged with the ratchet tooth 301. The clamping column 4 is inserted into the transverse slot in a manner that the pawl 401 faces the pressing column 3. A helical spring is arranged in the transverse slot as the first elastic member 12. During installation, the first elastic member 12 is in a pre-pressed state. Under the elastic force of the first elastic member 12, the pawl 401 is engaged with the ratchet tooth 301, thereby limiting the pressing column 3 in the longitudinal direction. The arrangement of the ratchet tooth 301 enables the pressing column 3 to be driven to move downward in one direction and cannot move upward directly. Therefore, during use, the pressing column 3 is pressed downward, and the pressing column 3 drives the pressing plate 2 to swing downward, thereby pressing the timing belt against the pulley and achieving temporary fixation of the pulley. When the fixation needs to be released, the clamping column 4 is manually actuated to make the pawl 401 disengage from the ratchet tooth 301, and the clamping column 4 releases the limitation on the pressing column 3.How the ratchet 301 achieves the limit of one-way motion is the common knowledge in the art, which is not described here.
[0022] In this embodiment, the visual sensor 11 and the audible and light alarm 9 are also included, the second cantilever 8 extends in the transverse direction away from the tablet 2 and is bent to form a mounting rod 10, the visual sensor 11 is mounted on the mounting rod 10 for detecting whether the relative displacement occurs between the belt and the pulley. The audible and light alarm 9 is mounted on the first cantilever 5, and the audible and light alarm 9 sends out the audible and light alarm according to the detection result of the visual sensor 11. As shown in the figure, the second cantilever 8 is also in the overall "L" type structure after bending, and the end of the mounting rod 10 is mounted with the visual sensor 11. When the timing belt is installed, the visual sensor 11 will scan to detect whether the intake and exhaust timing is aligned with the mark on the belt. If it is aligned, the audible and light alarm 9 will light green, if it is not aligned, the audible and light alarm 9 will alarm, flash red and emit a buzzing sound. And in the subsequent assembly process, if the position offset occurs, the visual sensor 11 will also send a signal to make the audible and light alarm 9 alarm. In this embodiment, the specific selection of the visual sensor 11 and the audible and light alarm 9 can be changed according to the actual situation, and the working principle of the two and how to realize the detection and alarm through the program are both the common technical means in the art, which are not described here.
[0023] In this embodiment, the fixing assembly also includes a second elastic member 7, the fixing claw 1 is provided with two mutually hinged, the bottom of the fixing claw 1 is inwardly bent to form a claw hook 6, and the two ends of the second elastic member 7 are respectively fixed to the two fixing claws 1. The claw hooks 6 of the two fixing claws 1 are close to each other under the elastic force of the second elastic member 7. In this embodiment, the surface of the claw hook 6 is covered with a buffer layer 13. As shown in the figure, the two fixing claws 1 in this embodiment are hinged to form a scissors-like structure, the upper part of the fixing claw 1 is the operating end, and the bottom of the fixing claw 1 is the two bent claw hooks 6. The second elastic member 7 is arranged between the hinge point of the two fixing claws 1 and the claw hook 6. The second elastic member 7 is a spiral spring, which pulls the two claw hooks 6 close to each other. In use, the two claw hooks 6 are separated by manual operation, and then the fixing claw 1 is arranged on the engine (such as the engine cylinder head), and then the hand is released. The two claw hooks 6 are close to each other under the elastic force of the second elastic member 7, and finally clamped and connected on the engine, realizing the installation of the device at the set position, and the installation method is simple and easy to operate. In this embodiment, the inner wall surface (the inner side refers to the side facing the set position) of the claw hook is covered with a flexible buffer layer 13, which avoids damaging the engine when the fixing claw 1 is clamped and fixed.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An auxiliary fixing device for belt assembly, characterized in that: The device includes a fixing component and a pressing component. The fixing component includes a fixing claw that is detachably snapped into a set position. The pressing component includes a pressure plate for pressing the belt against the pulley. The pressure plate is mounted on the fixing claw in a drivable, single-degree-of-freedom oscillating manner.
2. The auxiliary fixing device for belt assembly according to claim 1, characterized in that: The fixing component further includes a first cantilever, and the pressing component further includes a pressure column. The first cantilever is mounted on the fixing claw, the pressure plate is hinged to the first cantilever, and the pressure column is mounted on the first cantilever in a vertically slidable manner that can be limited. The pressure column is used to drive the pressure plate to swing with a single degree of freedom in the vertical plane.
3. The auxiliary fixing device for belt assembly according to claim 2, characterized in that: It also includes a detection component, which includes a vision sensor. The fixing component further includes a second cantilever, which is fixedly mounted on the fixing claw. The first cantilever is mounted on the fixing claw via the second cantilever. The second cantilever extends laterally away from the pressure plate and is bent to form a mounting rod. The vision sensor is mounted on the mounting rod to detect whether there is relative displacement between the belt and the pulley.
4. The auxiliary fixing device for belt assembly according to claim 3, characterized in that: The pressing assembly further includes a locking post. The pressing plate has an arc-shaped structure. The first cantilever includes a longitudinally arranged vertical rod and a transversely arranged horizontal rod at the top of the vertical rod. One arc-shaped end of the pressing plate is hinged to the lower part of the vertical rod, and the other arc-shaped end of the pressing plate is located below the vertical rod. The bottom of the pressing post passes through the transverse rod and abuts against the top surface of the other arc-shaped end of the pressing plate. The locking post is inserted into the transverse rod and limits the pressing post in the longitudinal direction.
5. The auxiliary fixing device for belt assembly according to claim 4, characterized in that: The pressing assembly further includes a first elastic element. The surface of the pressing post is provided with ratchet teeth along the longitudinal direction. The end of the locking post is provided with a pawl that engages with the ratchet teeth. The pressing post is slidably inserted into the first cantilever along the longitudinal direction. The locking post is slidably inserted into the first cantilever along the transverse direction by means of the pawl engaging with the ratchet teeth. The first elastic element is sleeved on the locking post. The pawl of the locking post abuts against the ratchet teeth under the action of the elastic force of the first elastic element.
6. The auxiliary fixing device for belt assembly according to claim 1, characterized in that: The fixing component further includes a second elastic element. The fixing claw has two hinged parts. The bottom of the fixing claw is bent inward to form a claw hook. The two ends of the second elastic element are respectively fixed to the two fixing claws. The claw hooks of the two fixing claws move closer to each other under the action of the elastic force of the second elastic element.
7. The auxiliary fixing device for belt assembly according to claim 6, characterized in that: The surface of the claw hook is covered with a buffer layer.
8. The auxiliary fixing device for belt assembly according to claim 3, characterized in that: The detection component also includes an audible and visual alarm, which is installed on the first cantilever and emits an audible and visual alarm based on the detection results of the visual sensor.