Cam lever transmission mechanism and use method thereof

Abstract

The invention belongs to the technical field of mechanical transmission, and relates to a cam lever transmission mechanism and a using method thereof. The device comprises two toothed bars and two logarithmic cams, the two toothed bars are used for inputting power signals, and the two logarithmic cams are matched with a lever to achieve multiplication conversion of the power signals, specifically, the output end of each toothed bar is connected with the input end of the corresponding logarithmic cam through a transmission component; the two logarithmic cams are used for transmitting motion signals of the toothed bar to the logarithmic cams to achieve rotation of the logarithmic cams, the logarithmic cams can drive the levers making contact with the logarithmic cams so that linear motion of the toothed bar can be converted into rotation of the logarithmic cams, and finally the two logarithmic cams transmit power signals to the levers to achieve superposition of the power signals. And mechanical transmission of multiplication and division operation is realized. A sliding groove is formed in the lever, the logarithmic face of the logarithmic cam makes contact with the sliding groove, and the transmission stability between the logarithmic cam and the lever is guaranteed. According to the invention, mechanical transmission of multiplication and division operation can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical transmission, and relates to a cam lever transmission mechanism and a use method thereof. Background Art

[0002] Multiplication and addition are extremely common and crucial in modern engineering and technology. They are not only the basis of mathematical operations, but also the core of many complex system designs and functional implementations. In the fields of electronic engineering and information technology, these basic mathematical operations are usually interconnected through highly precise electronic components, and electrical signals are cleverly used for high-speed and accurate calculations. Electronic systems can efficiently perform multiplication and addition calculations, thanks to their complex internal circuit design and advanced algorithm support, which enables data processing capabilities to reach unprecedented heights.

[0003] However, in the traditional field of mechanical hydraulics, the situation is quite different. Due to the physical characteristics and implementation capabilities of the mechanical adjustment mechanism itself, the realization of its operation function is far more complex and limited than that of the electronic system. In the mechanical hydraulic system, at most only a three-dimensional structure with two inputs and one output can be realized, and the transmission of multiplication and division operations cannot be realized.

[0004] In summary, the existing mechanical transmission methods cannot realize the transmission of multiplication and division operations. Summary of the invention

[0005] The purpose of the present invention is to provide a cam lever transmission mechanism and a method of using the same, so as to solve the technical problem that the existing mechanical transmission method cannot realize the transmission of multiplication and division operations. The present invention can realize the mechanical transmission of multiplication and division operations.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention discloses a cam lever transmission mechanism, comprising two gear rods and two logarithmic cams, wherein the output end of each gear rod is connected to the input end of the logarithmic cam via a transmission component, a lever is arranged between the two logarithmic cams, a sliding groove is provided on the lever, a logarithmic surface of the logarithmic cam is in contact with the sliding groove, and an output interface is arranged on the lever.

[0007] Furthermore, the transmission component includes two transmission shafts arranged in parallel, gears and logarithmic cams are sleeved on the transmission shafts, and meshing teeth are provided on the gear rods, and the meshing teeth are meshed with the gears.

[0008] Furthermore, the two transmission shafts have the same structure.

[0009] Furthermore, the lever is connected to a reset mechanism, and the reset mechanism is used to ensure that the sliding groove of the lever always keeps in contact with the logarithmic surface of the logarithmic cam.

[0010] Furthermore, the sliding grooves are located at both ends of the lever, and the output interface is located between the two sliding grooves.

[0011] Furthermore, the output interface is located in the middle of the two sliding grooves.

[0012] Furthermore, the two gear rods have the same structure and are arranged in parallel, and an input interface is provided on the gear rod, and the input interface is used to connect to the output end of the power source.

[0013] Furthermore, the two logarithmic cams have the same surface shape and are arranged in the same direction.

[0014] Furthermore, the surface shapes of the two logarithmic cams are different.

[0015] Based on the above structure, the present invention also discloses a method for using a cam lever transmission mechanism, comprising the following steps: The linear displacement signal is input through two gear rods respectively; The two gear rods drive the two logarithmic cams to rotate through the transmission components respectively; Both logarithmic cams drive levers via logarithmic surfaces and sliding grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention includes two gear rods and two logarithmic cams. The two gear rods are used for inputting power signals. The two logarithmic cams cooperate with levers to realize the conversion of multiplication operations of power signals. Specifically, the output end of each gear rod is connected to the input end of the logarithmic cam through a transmission component, which is used to transmit the motion signal of the gear rod to the logarithmic cam to realize the rotation of the logarithmic cam. The logarithmic cam can drive the lever in contact with it, thereby converting the linear motion of the gear rod into the rotation of the logarithmic cam. Finally, the two logarithmic cams transmit the power signal to the lever to realize the superposition of the power signal and realize the mechanical transmission of multiplication and division operations. A sliding groove is provided on the lever, and the logarithmic surface of the logarithmic cam is in contact with the sliding groove to ensure the stability of the transmission between the logarithmic cam and the lever. In addition, by changing the parameters of the logarithmic cam, the logarithmic cam can amplify or change the direction of the transmitted motion signal, thereby realizing precise control of the power or motion at the output end.

[0017] 2. The lever of the present invention is connected to a reset mechanism, and the reset mechanism is used to ensure that the sliding groove of the lever always keeps in contact with the logarithmic surface of the logarithmic cam, thereby ensuring the stability of the connection and transmission between the lever and the logarithmic cam.

[0018] 3. The present invention can achieve different output results by changing the arrangement of the two logarithmic cams.

[0019] 4. The sliding grooves of the present invention are located at both ends of the lever, and the output interface is located between the two sliding grooves. The sliding grooves are used to receive power signals and output them through the output interface 7 after being coupled by the lever, which is beneficial to ensure the stability of power signal transmission.

[0020] 5. The method of the present invention inputs linear displacement signals through two gear rods respectively; the two gear rods respectively drive two logarithmic cams to rotate through transmission components, converting the linear motion of the gear rods into the rotation of the logarithmic cams, and finally the two logarithmic cams transmit the power signal to the lever; the two logarithmic cams both drive the lever through the logarithmic surface and the sliding groove to ensure the stability of the transmission between the logarithmic cam and the lever, realize the superposition of power signals, and realize the mechanical transmission of multiplication and division operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the mechanical structure principle for implementing multiplication calculation in an embodiment of the present invention; Figure 2 It is a diagram showing the assembly relationship between the logarithmic cam and the transmission shaft of the present invention; Figure 3 It is a schematic structural diagram of the gear rod of the present invention; Figure 4 It is a structural schematic diagram of the lever of the present invention; Figure 5 It is a schematic diagram of the structure of the reset mechanism of an embodiment of the present invention; Figure 6 It is a schematic diagram of the overall structure of the present invention; Figure 7 The figure is a flow chart of the method of the present invention.

[0022] Among them: 1. logarithmic cam; 2. gear rod; 3. lever; 4. transmission shaft; 5. gear; 6. sliding groove; 7. output interface; 8. input interface; 9. reset mechanism. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 6 The present invention discloses a cam lever transmission mechanism, including two gear rods 2 and two logarithmic cams 1. The two gear rods 2 are used for inputting power signals, and the two logarithmic cams 1 cooperate with a lever 3 to realize the conversion of the multiplication operation of the power signal. The output end of each gear rod 2 is connected to the input end of the logarithmic cam 1 through a transmission component, which is used to transmit the motion signal of the gear rod 2 to the logarithmic cam 1 to realize the rotation of the logarithmic cam 1. The logarithmic cam 1 can drive the lever 3 in contact with it, thereby converting the linear motion of the gear rod 2 into the rotation of the logarithmic cam 1. Finally, the two logarithmic cams 1 transmit the power signal to the lever 3 to realize the superposition of the power signal. A lever 3 is provided between the two logarithmic cams 1, and a sliding groove 6 is provided on the lever 3. The logarithmic surface of the logarithmic cam 1 contacts the sliding groove 6 to ensure the stability of the transmission between the logarithmic cam 1 and the lever 3. At the same time, the two logarithmic cams 1 transmit power to the same lever 3 to realize the superposition of the motion signal. By changing the parameters of the logarithmic cam 1, the logarithmic cam can amplify or change the direction of the transmitted motion signal, thereby achieving precise control of the power or motion at the output end. The lever 3 is provided with an output interface 7, which is used for power output and as power input for other devices.

[0026] Embodiment 1: See also Figure 6 This embodiment discloses a cam lever transmission mechanism, including two gear rods 2 and two logarithmic cams 1, see Figure 3 The schematic diagram of the structure of the gear rod of the present invention is shown in FIG. The output end of each gear rod 2 is connected to the input end of the logarithmic cam 1 through a transmission component. A lever 3 is provided between the two logarithmic cams 1. A sliding groove 6 is provided on the lever 3. The logarithmic surface of the logarithmic cam 1 contacts the sliding groove 6. An output interface 7 is provided on the lever 3. Figure 4 It is a schematic structural diagram of the lever of the present invention.

[0027] Preferably, the transmission component comprises two transmission shafts 4 arranged in parallel, the transmission shafts 4 are sleeved with gears 5 and logarithmic cams 1, the gear rods 2 are provided with meshing teeth, and the meshing teeth mesh with the gears 5. Figure 2 This is a diagram showing the assembly relationship between the logarithmic cam and the transmission shaft of the present invention.

[0028] Preferably, the two transmission shafts 4 have the same structure.

[0029] Preferably, the lever 3 is connected to a reset mechanism 9, which is used to ensure that the sliding groove 6 of the lever 3 is always in contact with the logarithmic surface of the logarithmic cam 1, thereby ensuring the stability of the connection and transmission between the lever 3 and the logarithmic cam 1. Figure 5 It is a schematic diagram of the reset mechanism structure of the present invention.

[0030] Preferably, the sliding groove 6 is located at both ends of the lever 3, and the output interface 7 is located between the two sliding grooves 6. The sliding groove 6 is used to receive the power signal and output it through the output interface 7 after coupling through the lever 3, which is conducive to ensuring the stability of power signal transmission.

[0031] Preferably, the output interface 7 is located in the middle of the two sliding slots 6 .

[0032] Preferably, the two gear rods 2 have the same structure and are arranged in parallel, and an input interface 8 is provided on the gear rod 2, and the input interface 8 is used to connect to the output end of the power source.

[0033] Preferably, the two logarithmic cams 1 have the same surface shape and are arranged in the same direction, so as to realize the multiplication of the input motion signal, as follows: The input signals of the two gear rods 2 are both X. The input signals X are logarithmically processed by two logarithmic cams 1 and converted into lgX, and then added through the lever 3. Finally, the signal output through the output interface 7 on the lever 3 is KlgZ, KlgZ=K(lgX+lgX)=lgXX.

[0034] It should be noted that the surface of the logarithmic cam 1 described in the present application is a logarithmic surface, specifically the contact surface between the logarithmic cam 1 and the lever 3. The logarithmic surface of the logarithmic cam 1 can convert the linear signal X input by the gear rod 2 into a linear signal of lgX and output it through the lever 3. Figure 1 The figure is a schematic diagram of the mechanical structure principle for realizing multiplication calculation in the present invention.

[0035] The present invention inputs power signals through two gear rods, and two logarithmic cams cooperate with levers to realize the conversion of multiplication operations of power signals, specifically: the linear motion of the gear rod is converted into the rotation of the logarithmic cam, and finally the two logarithmic cams transmit the power signal to the lever, realize the superposition of the power signal, and realize the mechanical transmission of multiplication and division operations. In addition, by changing the parameters of the logarithmic cam, the logarithmic cam can amplify or change the direction of the transmitted motion signal, thereby realizing precise control of the power or motion at the output end. The present invention can realize the mechanical transmission of multiplication and division operations.

[0036] Embodiment 2: See also Figure 6 The present embodiment discloses a cam lever transmission mechanism, comprising two toothed rods 2 and two logarithmic cams 1. The output end of each toothed rod 2 is connected to the input end of the logarithmic cam 1 through a transmission component. A lever 3 is provided between the two logarithmic cams 1. A sliding groove 6 is provided on the lever 3. The logarithmic surface of the logarithmic cam 1 contacts the sliding groove 6. An output interface 7 is provided on the lever 3.

[0037] Preferably, the transmission component comprises two transmission shafts 4 arranged in parallel, the transmission shafts 4 are sleeved with gears 5 and logarithmic cams 1 , the gear rods 2 are provided with meshing teeth, and the meshing teeth mesh with the gears 5 .

[0038] Preferably, the two transmission shafts 4 have the same structure.

[0039] Preferably, the lever 3 is connected to a reset mechanism 9, and the reset mechanism 9 is used to ensure that the sliding groove 6 of the lever 3 always keeps in contact with the logarithmic surface of the logarithmic cam 1, thereby ensuring the stability of the connection and transmission between the lever 3 and the logarithmic cam 1.

[0040] Preferably, the reset mechanism 9 of the present invention is a plurality of sets of elastic reset spring groups, and the reset spring groups are always in a compressed state to ensure that the lever 3 always maintains contact with the logarithmic surface of the logarithmic cam 1, which is beneficial to ensure the stability of power signal transmission.

[0041] Preferably, the sliding groove 6 is located at both ends of the lever 3, and the output interface 7 is located between the two sliding grooves 6. The sliding groove 6 is used to receive the power signal and output it through the output interface 7 after coupling through the lever 3, which is conducive to ensuring the stability of power signal transmission.

[0042] Preferably, the output interface 7 is located in the middle of the two sliding slots 6 .

[0043] Preferably, the two gear rods 2 have the same structure and are arranged in parallel, and an input interface 8 is provided on the gear rod 2, and the input interface 8 is used to connect to the output end of the power source.

[0044] Preferably, the two logarithmic cams 1 have different surface shapes, and the input signals of the two gear rods 2 are linear displacement X and linear displacement Y respectively. The input linear displacement signals X and Y are logarithmically processed by the two logarithmic cams 1, converted into lgX and lgY signals, and then added or subtracted by the lever 3, and finally output as signals through the output interface 7 on the lever 3.

[0045] The present invention utilizes a mechanical lever and a logarithmic cam structure to convert a signal that needs to be multiplied or divided into an addition operation that can be realized by a simple lever. The mechanical structure is used to realize multiplication or division calculation, which satisfies the operation processing of multiple signal sources and can improve the control accuracy of the mechanism.

[0046] Embodiment three: See also Figure 6 This embodiment discloses a cam lever transmission mechanism, including two gear rods 2, two transmission shafts 4, two logarithmic cams 1 and a lever 3.

[0047] There are two gear rods 2 and two logarithmic cams 1, the output end of each gear rod 2 is connected to the input end of the logarithmic cam 1 through a transmission component, a lever 3 is provided between the two logarithmic cams 1, a sliding groove 6 is provided on the lever 3, the logarithmic surface of the logarithmic cam 1 is in contact with the sliding groove 6, and an output interface 7 is provided on the lever 3.

[0048] The present invention can improve the control accuracy of the device of the present invention by controlling the coefficient of the logarithmic function and the structural dimensions of the logarithmic cam 1 and the lever 3, as follows: In this embodiment, the following operation process is realized by the mechanical structure of the present invention, see Figure 1 The schematic diagram of the mechanical structure principle for implementing multiplication calculation in an embodiment of the present invention is as follows: KlgZ=K(lgX+lgY) Where K is the proportionality coefficient, Two logarithmic cams 1 are arranged facing each other, and the input signals of the two gear rods 2 are linear displacement X and linear displacement Y respectively. The input signal X and the input signal Y need to be logarithmically processed by the logarithmic cam 1. The input signal X is converted into lgX, and the input signal Y is converted into lgY signal. Then, the addition operation is performed to obtain lgZ, which is the final output result of the logarithmic cam 1 through the lever 3.

[0049] In the present invention, the proportionality coefficient K is directly related to the calculation accuracy of the mechanical structure. If K is increased, the calculation accuracy of the mechanical structure can be correspondingly improved under the same part processing accuracy, but the corresponding mechanical structure size will increase. In the actual engineering application process, if the space structure allows, the K value can be appropriately increased to improve the calculation accuracy of the mechanical structure.

[0050] In this embodiment, when the logarithmic cam 1 is working, the gear rod 2 transmits the displacement signal to the gear 5 connected to the logarithmic cam 1, and converts the linear displacement signal of the gear rod 2 into the angular displacement signal of the logarithmic cam 1. That is, the logarithmic relationship between the profile of the logarithmic cam 1 and the linear displacement signal can be realized. After determining the radius of the gear 5 connected to the logarithmic cam 1, each time the gear 5 rotates an angle, a corresponding output radius on the profile of the logarithmic cam 1 can be determined. The profile radius of the logarithmic cam 1 is an important influencing factor of the logarithmic function relationship. When processing the logarithmic cam 1, the logarithmic function relationship can be designed accordingly according to the needs, and the coefficient K can be increased.

[0051] The outputs of two sets of logarithmic cams 1 are connected and the sum of their signals is taken to obtain logarithmic addition. In the present invention, this addition operation is usually implemented using a lever mechanism, as follows: The profiles of the two sets of logarithmic cams 1 act on the two ends of the lever 3 in the same direction, that is, both ends of the lever 3 are provided with sliding grooves 6, and the logarithmic surface of the logarithmic cam 1 is in contact with the sliding grooves 6. The input interface 8 at the center of the lever 3 receives the resultant force from both ends, and the linear displacement at the center is the sum of the input amounts at both ends of the lever. If the profile input amounts of the two logarithmic cams 1 are lgX and lgY respectively, the displacement output amount at the center of the lever is lgX+lgY=lgXY, thereby realizing the multiplication of the input signal X and the input signal Y.

[0052] Embodiment 4: See also Figure 6 This embodiment discloses a cam lever transmission mechanism. Different from the third embodiment, the profiles of the two logarithmic cams 1 of this embodiment act in opposite directions on the two ends of the lever. Figure 6 The working state diagram of this embodiment. The input interface 8 at the center of the lever 3 receives the resultant force from both ends, and the linear displacement at the center is the difference between the input amounts at both ends of the lever. The profile input amounts of the two logarithmic cams 1 are lgX and lgY respectively, and the displacement output at the center of the lever is lgX-lgY=lg (X / Y), thereby realizing the division of the input signal X and the input signal Y.

[0053] In summary, by adjusting the layout of the profiles of the two logarithmic cams 1, the output can be adjusted. That is, if the linear displacements of the two gear rods 2 are X and Y respectively, the outputs of the two logarithmic cams 1 are the logarithmic functions of the linear displacements lgX and lgY; the inputs of the levers are lgX and lgY, and the outputs are lgXY or lg (X / Y). When designing the logarithmic cam 1, the logarithmic function form can be changed according to actual needs, such as: lg, ln and logx, but the function form of the logarithmic cams 1 at both ends of the lever must be kept consistent.

[0054] In practical applications, the output of the addition or subtraction operation of the lever mechanism is used as a comparison quantity and compared with another logarithmic signal lgA to obtain the size relationship between A and XY or A and X / Y.

[0055] In summary, the present invention utilizes the mechanical lever and the logarithmic cam 1 structure to convert the signal that needs to be multiplied into an addition operation that can be realized by a simple lever. The mechanical structure is used to realize the multiplication calculation, which satisfies the operation processing of multiple signal sources, and the calculation accuracy can be improved by increasing the proportional coefficient K. In practical engineering applications, the purpose of simplification and lightness can be achieved.

[0056] Based on the above structure, the present invention discloses a method for using a cam lever transmission mechanism, see Figure 7 , including the following steps: S1, input linear displacement signals through two gear rods 2 respectively; S2, the two gear rods 2 drive the two logarithmic cams 1 to rotate through the transmission components, converting the linear motion of the gear rods 2 into the rotation of the logarithmic cams 1, and finally the two logarithmic cams 1 transmit the power signal to the lever 3; S3, the two logarithmic cams 1 drive the lever 3 through the logarithmic surface and the sliding groove 6, ensuring the stability of the transmission between the logarithmic cam 1 and the lever 3, realizing the superposition of power signals, and realizing the mechanical transmission of multiplication and division operations.

[0057] In summary, the present invention utilizes a mechanical lever and a logarithmic cam structure to convert a signal that needs to be multiplied or divided into an addition operation that can be realized by a simple lever. The mechanical structure is used to realize multiplication or division calculation, which satisfies the operation processing of multiple signal sources and can improve the control accuracy of the mechanism.

[0058] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A cam lever transmission mechanism, characterized in that: The invention comprises two toothed rods (2) and two logarithmic cams (1), wherein the output end of each toothed rod (2) is connected to the input end of the logarithmic cam (1) via a transmission component, a lever (3) is provided between the two logarithmic cams (1), a sliding groove (6) is provided on the lever (3), a logarithmic surface of the logarithmic cam (1) is in contact with the sliding groove (6), and an output interface (7) is provided on the lever (3).

2. A cam lever transmission mechanism according to claim 1, characterized in that: The transmission component comprises two transmission shafts (4) arranged in parallel, a gear (5) and a logarithmic cam (1) are sleeved on the transmission shaft (4), and meshing teeth are provided on the gear rod (2), and the meshing teeth mesh with the gear (5).

3. The cam lever transmission mechanism according to claim 1, characterized in that: The two transmission shafts (4) have the same structure.

4. The cam lever transmission mechanism according to claim 1, characterized in that: The lever (3) is connected to a reset mechanism (9), and the reset mechanism (9) is used to ensure that the sliding groove (6) of the lever (3) and the logarithmic surface of the logarithmic cam (1) always maintain contact.

5. The cam lever transmission mechanism according to claim 1, characterized in that: The sliding grooves (6) are located at both ends of the lever (3), and the output interface (7) is located between the two sliding grooves (6).

6. A cam lever transmission mechanism according to claim 5, characterized in that: The output interface (7) is located in the middle of the two sliding grooves (6).

7. The cam lever transmission mechanism according to claim 1, characterized in that: The two gear rods (2) have the same structure and are arranged in parallel. An input interface (8) is provided on the gear rod (2), and the input interface (8) is used to be connected to the output end of a power source.

8. The cam lever transmission mechanism according to claim 1, characterized in that: The two logarithmic cams (1) have the same surface shape and are arranged in the same direction.

9. The cam lever transmission mechanism according to claim 1, characterized in that: The two logarithmic cams (1) have different surface shapes.

10. A method for using a cam lever transmission mechanism, characterized in that: The following steps are involved: The linear displacement signals are inputted through two gear rods (2) respectively; The two gear rods (2) respectively drive the two logarithmic cams (1) to rotate via transmission components; The two logarithmic cams (1) both drive the lever (3) via the logarithmic surface and the sliding groove (6).

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