Device for applying balance reaction force of ultra-large torque standard device to ground

Abstract

The invention relates to a device for applying balance reaction force of an ultra-large torque standard device to the ground. The device comprises a base, a mounting mechanism, a balance force arm and a standard force arm, a mounting frame is arranged at the upper end of the base, connecting arms are arranged at the two ends of the mounting frame, one end of each connecting arm is provided with a connecting mechanism capable of being connected with a tested torque sensor, and the other end of each connecting arm is provided with an arm length adjusting mechanism; when in use, one end of the tested torque sensor generates torque through the connecting arm by using the standard moment arm and the standard torque loading structure, and the arm length adjusting mechanism can adjust the length of the moment arm on one side of the standard torque loading structure. Therefore, the torque of the standard torque loading structure to the tested torque sensor can be adjusted according to the lengths of different force arms. The balance tension mechanism can exert balance torque at the diagonal position, the device can achieve standard torque balance torque, and it is ensured that a machine tool body is not affected by torsion to deform.

Description

Technical Field

[0001] The present invention relates to the technical field of standard torque balancing, and in particular to a device for balancing the reaction force of an ultra-large torque standard device acting on the ground. Background Art

[0002] The static weight torque standard device is a high-precision torque measuring device. This device is composed of a standard lever arm, a standard weight, a lever arm support component, a machine tool body, and a balancing component. The traditional balancing component is fixed to the machine tool and driven by a motor. However, for super-large static weight torque standard machines, this structure cannot be realized. This is because the existing motor cannot provide a large enough output torque to balance the super-large standard torque generated by the standard lever arm weight. To solve this problem, a design technology that balances the reaction force acting on the ground is required. While providing a large enough balancing torque for the standard torque, it can also ensure that the machine tool body is not deformed by the torque. Summary of the invention

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a device for balancing the reaction force of an ultra-large torque standard device acting on the earth, which can be used to balance the ultra-large standard torque generated by the standard lever arm weight; ensure that the equipment is not deformed by the torque, and effectively ensure the accuracy requirements of the high-precision measuring device.

[0004] The technical solution adopted by the present invention is: a device for balancing the reaction force of an ultra-large torque standard device acting on the ground, comprising a base, a mounting mechanism, a balancing force arm and a standard force arm; a mounting frame is provided at the upper end of the base, the mounting frame is used to fix the torque sensor to be measured, connecting arms are provided at both ends of the mounting frame, one end of the connecting arm is provided with a connecting mechanism that can be connected to the torque sensor to be measured, and the other end is provided with an arm length adjustment mechanism, the balancing force arm and the standard force arm are respectively horizontally installed on one of the arm length adjustment mechanisms, the arm length adjustment mechanism can control the standard force arm and the balancing force arm to move in opposite directions, standard moment loading structures are provided at both ends of the standard force arm, a balancing tension mechanism is provided below the balancing force arm, the standard moment loading structure and the balancing tension structure can be connected to the corresponding ends of the balancing force arm and the standard force arm, when the standard moment loading structure is connected to one end of the standard force arm, the balancing tension mechanism is connected to the balancing force arm, so that the connecting arm rotates, which is used to balance the standard force arm.

[0005] Furthermore, the mounting frame includes an adjusting block and a fixed block arranged up and down, and a relatively arranged receiving groove is provided on the side opposite to the adjusting block and the fixed block, and a protective cushion layer is provided on the inner wall of the receiving groove. The measured torque sensor can be placed between the two receiving grooves, and fixing screws are provided on both sides of the adjusting block corresponding to the receiving groove. The fixing screws penetrate the adjusting block up and down, and the lower end of the fixing screw is threadedly engaged with the fixed block.

[0006] Furthermore, the connection mechanism is provided on a coupling at one end of the connecting arm close to the mounting frame, and a connecting claw is provided at the end of the coupling, and the connecting claw can be fixedly connected to the torque sensor to be measured.

[0007] Furthermore, the arm length adjustment mechanism includes an adjusting cylinder and a guide rail, the adjusting cylinder is fixed in the horizontal direction at one end of the two connecting arms away from the mounting frame, the adjusting cylinder is perpendicular to the connecting arm, the guide rail is arranged around the inner wall of the adjusting cylinder along the length direction of the adjusting cylinder, the standard force arm and the balance force arm are inserted in the corresponding adjusting cylinder, the outer periphery of the standard force arm and the balance force arm is provided with a guide groove arranged along the length direction thereof, an adjusting groove is provided above the outer periphery of the adjusting cylinder corresponding to the standard force arm or the balance ratio and penetrating the inner wall of the adjusting cylinder, an adjusting gear is rotatably provided in the adjusting groove, and the adjusting gear is meshed with a rack transmission provided on the outer periphery of the standard force arm and the balance force arm.

[0008] Furthermore, an adjustment dial connected to the adjustment gear is provided on the outside of the adjustment cylinder, and a rotating handle is provided on the outside of the adjustment dial; installation grooves are provided on the outer periphery of the standard force arm and the balance force arm, and the rack is fixed in the installation grooves, and the installation grooves are arranged along the length of the standard force arm and the balance force arm.

[0009] Furthermore, the standard torque loading structure includes a standard weight, a weight base, a weight plate and a lifting mechanism; the weight plate and the weight base are arranged up and down, the lifting mechanism is arranged at the geometric center of the upper end base of the weight, the lifting mechanism is transmission-connected with a vertically arranged lifting screw, the upper end of the lifting screw is rotatably provided with a lifting plate located below the weight plate, and the lifting plate can drive the weight plate to rise or fall; the upper surface of the standard weight is provided with a conical positioning groove, and the lower surface is provided with a conical positioning pin, and the outer side of the standard weight is also provided with an installation groove arranged along its radial direction, and the width of the installation groove is slightly larger than the diameter of the lifting screw, so that the standard weight can be arranged from top to bottom below the weight plate; it also includes a number of connecting plates, and the outer sides of the upper and lower ends of the connecting plates are provided with connecting protrusions, and the connecting protrusions can be snap-fitted with connecting holes provided on the outer periphery of the weight plate or the outer periphery of the standard weight.

[0010] Furthermore, the lifting mechanism includes a threaded sleeve which is arranged at the geometric center of the weight base and cooperates with the lifting screw thread. The threaded sleeve is transmission-connected to the output end of the reducer located in the weight base through a worm gear mechanism.

[0011] Furthermore, a support frame is provided at the lower end of the weight base, and a support block arranged around the outer periphery of the weight base is provided at the lower end of the support frame, the support block is screwed to the support frame, and a horizontally arranged level bubble is also provided below the weight base.

[0012] Furthermore, the balancing tension mechanism includes a balancing base, which can move along the length of the balancing force arm. A worm gear reduction rod assembly is provided in the balancing base, and the worm gear reduction rod assembly can be connected to the end of the balancing force arm. The worm gear reduction rod assembly is signal-connected to a displacement sensor provided on the standard force arm. After one end of the standard force arm is loaded with a standard torque loading structure, the worm gear reduction rod assembly pulls one end of the balancing force arm to put the connecting arm in dynamic balance.

[0013] Furthermore, an adjustment rail arranged along the length of the balancing arm is provided below the balancing base, and the lower end of the balancing base is rollingly engaged with the adjustment rail. A position sensor is provided at the upper end of the balancing base, so that the worm gear reduction pull rod assembly can move to just below the end of the balancing arm. Fixed brackets that can be unfolded or folded are also provided on both sides of the balancing base.

[0014] The beneficial effects of the present invention are as follows: when in use, the present invention can install the measured torque sensor on the mounting frame of the base, and one end of the measured torque sensor generates torque through the connecting arm by using the standard force arm and the standard moment loading structure. Since the standard force arm can be adjusted by the arm length adjustment mechanism, the force arm length on one side of the standard moment loading structure can be adjusted, so that the torque size of the standard moment loading structure on the measured torque sensor can be adjusted according to different force arm lengths; the device is connected to the end of the balance force arm through the balance tension mechanism, and the length of the balance force arm is adjusted according to the needs to realize the application of the balance torque at the diagonal position of the standard weight. The device can provide a sufficiently large balance torque for the standard torque, and at the same time can ensure that the machine tool body is not deformed by the torque; it has high practical value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a device for balancing the reaction force of an ultra-large torque standard device acting on the ground provided by an embodiment of the present invention;

[0016] Figure 2 A structural diagram of an arm length adjustment mechanism of a device for balancing the reaction force of an ultra-large torque standard device acting on the ground provided by an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of a standard torque loading structure of a device for balancing the reaction force of an ultra-large torque standard device provided by an embodiment of the present invention acting on the ground;

[0018] Figure 4 A schematic diagram of the structure of a balancing tension mechanism of a device for balancing the reaction force of an ultra-large torque standard device provided by an embodiment of the present invention acting on the ground;

[0019] Reference numerals: base 100, balance arm 200, standard arm 300, mounting frame 400, measured torque sensor 500, connecting arm 600, arm length adjustment mechanism 700, adjustment cylinder 710, guide rail 720, guide groove 730, adjustment gear 740, adjustment turntable 750, standard torque loading structure 800, standard weight 810, weight base 820, weight plate 830, lifting screw 840, lifting plate 850, round Conical positioning groove 811, conical positioning pin 812, mounting groove 813, connecting plate 860, threaded sleeve 870, support frame 880, level bubble 890, balancing tension mechanism 900, balancing base 910, worm gear reduction pull rod assembly 920, adjusting guide rail 930, position sensor 940, fixed bracket 950, coupling 1000, connecting claw 1100, rack 1200, adjusting block 1300, and fixing screw 1400. DETAILED DESCRIPTION

[0020] It should be noted here that the functions and methods involved in the present invention are merely conventional adaptive applications of the prior art. Therefore, the improvement of the prior art by the present invention is essentially the connection relationship between the hardware, rather than the functions and methods themselves. That is, although the present invention involves some functions and methods, it does not include improvements to the functions and methods themselves. The description of the functions and methods in the present invention is to better illustrate the present invention so as to better understand the present invention.

[0021] The embodiments of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and the protection scope of the present invention cannot be limited thereto. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should be the common meanings understood by those skilled in the art to which the present invention belongs.

[0022] Embodiment 1:

[0023] like Figures 1 to 4As shown, a specific embodiment of the present invention provides a device for balancing the reaction force of an ultra-large torque standard device acting on the ground, comprising a base 100, a mounting mechanism, a balancing arm 200 and a standard arm 300; a mounting frame 400 is provided at the upper end of the base 100, and the mounting frame 400 is used to fix the torque sensor 500 to be measured, and connecting arms 600 are provided at both ends of the mounting frame 400, and a connecting mechanism capable of being connected to the torque sensor 500 to be measured is provided at one end of the connecting arm 600, and an arm length adjustment mechanism 700 is provided at the other end, and the balancing arm 200 and the standard arm 300 are respectively horizontally mounted on one of the arm length adjustment mechanisms 700. The arm length adjustment mechanism 700 can control the standard lever arm 300 and the balance lever arm 200 to move in opposite directions. Standard torque loading structures 800 are provided at both ends of the standard lever arm 300. A balance tension mechanism 900 is provided below the balance lever arm 200. The standard torque loading structure 800 and the balance tension structure can be connected to the corresponding ends of the balance lever arm 200 and the standard lever arm 300. When the standard torque loading structure 800 is connected to one end of the standard lever arm 300, the balance tension mechanism 900 is connected to the balance lever arm 200 to rotate the connecting arm 600 for balancing the standard lever arm 300.

[0024] In this embodiment, the torque sensor 500 to be measured can be installed on the mounting frame 400 of the base 100. When performing a torque test, both ends of the torque sensor 500 to be measured are connected to the connecting arm 600 through a connecting mechanism. One end of the torque sensor 500 to be measured generates torque through the connecting arm 600 using the standard lever arm 300 and the standard moment loading structure 800, that is, the standard weight 810 is loaded on one end of the standard lever arm 300. Since the standard lever arm 300 can be adjusted by the arm length adjustment mechanism 700, the lever arm length on one side of the standard moment loading structure 800 can be adjusted. The torque size of the standard moment loading structure 800 on the torque sensor 500 to be measured can be adjusted according to different lever arm lengths.

[0025] As is known to all, due to the positive and negative balance characteristics of torque, the standard arm 300 must be restored to a horizontal position by applying the same torque to the balance arm 200 to level it. If the fulcrum of such a large torque is on the bed of the base 100, the bed will be deformed. This deformation is added to the torsional deformation of the torque sensor, affecting the measurement accuracy. In practical applications, the balance arm 200 in this embodiment can be moved in the opposite direction of the standard arm 300 through the arm length adjustment mechanism 700, and is connected to the end of the balance arm 200 through the balance tension mechanism 900. The length of the balance arm 200 is adjusted as needed to achieve the application of a balance torque at the diagonal position of the standard weight 810. This device can provide a sufficiently large balance torque for the standard torque, and at the same time ensure that the base 100 is not deformed by the torque, so that the base 100 of the equipment is only subjected to positive pressure, reducing the error influence of the standard device.

[0026] Embodiment 2:

[0027] like Figure 1 As shown, in order to install the measured torque sensor 500 on the mounting frame 400 of the base 100, the mounting frame 400 of this embodiment includes an adjusting block 1300 and a fixed block arranged up and down, and the adjusting block 1300 is provided with a relatively arranged receiving groove on the side opposite to the fixed block, and the inner wall of the receiving groove is provided with a protective cushion layer, and the measured torque sensor 500 can be placed between the two receiving grooves, and the adjusting block 1300 is provided with a fixing screw 1400 on both sides corresponding to the receiving groove, and the fixing screw 1400 passes through the adjusting block 1300 up and down, and the lower end of the fixing screw 1400 is screwed with the fixed block. In this way, the measured torque sensor 500 can be deployed in the receiving groove between the adjusting block 1300 and the fixed block, and the measured torque sensor 500 is fixed by rotating the fixing screw 1400, thereby improving the convenience of installation and disassembly. The provision of a protective cushion layer can prevent the measured torque sensor 500 from being damaged.

[0028] As mentioned above, the end of the connecting arm 600 needs to be connected to the measured torque sensor 500 through a connecting mechanism. The connecting mechanism provided in this embodiment is provided at the coupling 1000 at one end of the connecting arm 600 close to the mounting frame 400. The end of the coupling 1000 is provided with a connecting claw 1100, and the connecting claw 1100 can be fixedly connected to the measured torque sensor 500. In this way, one end of the coupling 1000 is connected to the connecting arm 600, and the other end is fixedly connected to the measured torque sensor 500 through the connecting claw 1100 to achieve torque transmission, which is convenient for installation on the one hand, and can ensure the torque detection and measurement accuracy on the other hand.

[0029] like Figure 2 and Figure 3As shown, in the first embodiment, the arm lengths of the side of the balancing arm 200 and the standard arm 300 connected to the standard moment loading structure 800 and the balancing tension mechanism 900 can be adjusted autonomously, that is, the arm length of the standard arm 300 and the arm length of the balancing arm 200 are adjusted by the arm length adjustment mechanism 700; the arm length adjustment mechanism 700 provided in this embodiment includes an adjustment cylinder 710 and a guide rail 720, the adjustment cylinder 710 is fixed in the horizontal direction to one end of the two connecting arms 600 away from the mounting frame 400, the adjustment cylinder 710 is perpendicular to the connecting arms 600, and the guide rail 720 The standard force arm 300 and the balancing force arm 200 are arranged around the inner wall of the adjusting cylinder 710 along the length direction of the adjusting cylinder 710, and are inserted into the corresponding adjusting cylinder 710. The outer peripheries of the standard force arm 300 and the balancing force arm 200 are provided with guide grooves 730 arranged along their length directions. An adjusting groove penetrating the inner wall of the adjusting cylinder 710 is provided above the outer periphery of the adjusting cylinder 710 corresponding to the standard force arm 300 or the balancing ratio. An adjusting gear 740 is rotatably provided in the adjusting groove, and the adjusting gear 740 is drivingly engaged with a rack 1200 arranged on the outer periphery of the standard force arm 300 and the balancing force arm 200. In this way, in actual application, the balancing arm 200 and the standard arm 300 are moved oppositely by rotating the adjusting gear 740, so as to perform a torque test at a diagonal position. Controlling the arm length of the standard arm 300 of the balancing arm 200 by adjusting the gear 740 is beneficial to improving the accuracy of the detection. In addition, in order to improve the adjustment accuracy, the present embodiment provides an adjustment dial 750 connected to the adjustment gear 740 on the outside of the adjustment cylinder 710, and a rotating handle is provided on the outside of the adjustment dial 750. In order to make the standard arm 300 and the balancing arm 200 move stably along the length of the adjustment cylinder 710, the present embodiment provides an installation groove 813 on the outer periphery of the standard arm 300 and the balancing arm 200, and the rack 1200 is fixed in the installation groove 813, and the installation groove 813 is arranged along the length of the standard arm 300 and the balancing arm 200.

[0030] Embodiment three:

[0031] like Figure 3As shown, this embodiment provides a standard moment loading structure 800 for generating a standard moment, and the standard moment loading structure 800 includes a standard weight 810, a weight base 820, a weight plate 830 and a lifting mechanism; the weight plate 830 and the weight base 820 are arranged up and down, and the lifting mechanism is arranged at the geometric center of the upper end base of the weight, and the lifting mechanism is connected to a vertically arranged lifting screw 840, and the upper end of the lifting screw 840 is rotatably provided with a lifting plate 850 located below the weight plate 830, and the lifting plate 850 can drive the weight plate 830 to rise or fall; The standard weight 810 is provided with a conical positioning groove 811 on its upper surface and a conical positioning pin 812 on its lower surface. The standard weight 810 is also provided with a mounting groove 813 arranged along its radial direction on its outer side. The width of the mounting groove 813 is slightly larger than the diameter of the lifting screw 840, so that the standard weight 810 can be arranged from top to bottom under the weight plate 830; it also includes a plurality of connecting pieces 860, and the outer sides of the upper and lower ends of the connecting piece 860 are provided with connecting protrusions, and the connecting protrusions can be snap-fitted with connecting holes arranged on the outer periphery of the weight plate 830 or the outer periphery of the standard weight 810.

[0032] Through the above arrangement, when loading the standard weight 810, the weight plate 830 can be connected to the end of the standard force arm 300, and the lifting mechanism is used to control the lifting plate 850 to rise so that it is offset against the weight plate 830, thereby avoiding the weight plate 830 from shaking when loading the standard weight 810. The standard weight 810 can be loaded under the weight plate 830 through the connecting piece 860, and the installation groove 813 of the standard weight 810 can be used as a yield groove to avoid the lifting screw 840 from interfering with the loading of the standard weight 810. After setting the required standard torque value and loading the corresponding number of standard weights 810, the lifting mechanism is used to control the lifting plate 850 to slightly descend so that it is separated from the weight plate 830, and the balancing force arm 200 can apply torque to the torque sensor 500 under the action of the weight gravity.

[0033] like Figure 3 As shown, the lifting mechanism for controlling the lifting of the lifting plate 850 includes a threaded sleeve 870 disposed at the geometric center of the weight base 820 and threadedly matched with the lifting screw 840. The threaded sleeve 870 is connected to the output end of the reducer located in the weight base 820 through a worm gear mechanism. In this way, the reducer power is transmitted through the worm gear mechanism, so that the threaded sleeve 870 rotates forward and reversely, thereby driving the lifting screw 840 to drive the lifting plate 850 to rise or fall. In practical applications, a private motor can be used to drive the reducer to operate; in addition, the length of the connecting piece 860 connected to the weight plate 830 is appropriately lengthened, so that the lifting plate 850 has a certain space to move up and down.

[0034] like Figure 3As shown, in order to improve the stability of the weight base 820, this embodiment is provided with a support frame 880 at the lower end of the weight base 820, and a support block arranged around the outer periphery of the weight base 820 is provided at the lower end of the support frame 880, and the support block is screwed with the support frame 880, and a horizontal bubble 890 arranged horizontally is also provided below the weight base 820. In this way, the weight base can be stably supported by each support block, and the horizontality of the support can be adjusted by the horizontal bubble 890.

[0035] Embodiment 4:

[0036] like Figure 4 As shown, the present embodiment provides a balancing tension mechanism 900 for balancing the standard torque, including a balancing base 910, wherein the balancing base 910 can move along the length of the balancing arm 200, wherein a worm gear reduction rod assembly 920 is provided inside the balancing base 910, wherein the worm gear reduction rod assembly 920 can be connected to the end of the balancing arm 200, wherein the worm gear reduction rod assembly 920 is signal-connected to a displacement sensor provided on the standard arm 300, and after the standard torque loading structure 800 is loaded on one end of the standard arm 300, the worm gear reduction rod assembly 920 pulls one end of the balancing arm 200 to put the connecting arm 600 in dynamic balance. In this way, the displacement sensor can detect the displacement of the standard lever arm 300, so that the balancing lever arm 200 is pulled by the worm gear reduction rod assembly 920 to generate a balancing torque, and the standard lever arm 300 is adjusted to a horizontal position; at this time, the torque generated by the combination of the standard torque loading structure 800 and the standard lever arm 300 is the standard torque, which can be used to measure the sensor under test.

[0037] In order to enable the balancing base 910 to move to the end of the balancing arm 200 at the corresponding end to generate a balancing torque, in this embodiment, an adjustment rail 930720 arranged along the length of the balancing arm 200 is provided below the balancing base 910, and the lower end of the balancing base 910 is in rolling cooperation with the adjustment rail 930720. A position sensor 940 is provided at the upper end of the balancing base 910, so that the worm gear reduction rod assembly 920 can move to the right below the end of the balancing arm 200. The balancing base 910 is also provided with a fixed bracket 950 that can be unfolded or folded on both sides. The fixed bracket 950 can be unfolded to stably support the balancing base 910, so that the load support point of the balancing tension mechanism 900 of the balancing arm 200 is not placed on the base 100 but on the ground, so that the base 100 is only subjected to positive pressure, reducing the error influence of the standard device.

[0038] In summary, in the technical solution of the present invention; the torque sensor to be measured can be installed on the mounting frame of the base, and when performing the torque test, the two ends of the torque sensor to be measured are connected to the connecting arm through the connecting mechanism, and one end of the torque sensor to be measured generates torque through the connecting arm using the standard force arm and the standard torque loading structure, that is, the standard weight is loaded on one end of the standard force arm. Since the standard force arm can be adjusted by the arm length adjustment mechanism, the force arm length on one side of the standard torque loading structure can be adjusted, and the torque of the standard torque loading structure on the torque sensor to be measured can be adjusted according to different force arm lengths; at the same time, the balancing force arm can be moved in the opposite direction of the standard force arm through the arm length adjustment mechanism, and is connected to the end of the balancing force arm through the balancing tension mechanism. The length of the balancing force arm is adjusted as needed to achieve the application of a balancing torque at the diagonal position of the standard weight. The device can provide a sufficiently large balancing torque for the standard torque, and at the same time ensure that the machine tool body is not deformed by the torque.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A device for balancing a reaction force of an ultra-large torque standard device acting on the ground, characterized in that it comprises a base (100), a mounting mechanism, a balancing force arm (200) and a standard force arm (300); a mounting frame (400) is provided at the upper end of the base (100), the mounting frame (400) is used to fix a torque sensor (500) to be measured, connecting arms (600) are provided at both ends of the mounting frame (400), one end of the connecting arm (600) is provided with a connecting mechanism capable of being connected to the torque sensor (500) to be measured, and the other end is provided with an arm length adjustment mechanism (700), the balancing force arm (200) and the standard force arm (300) are respectively horizontally mounted on one of the arm length adjustment mechanisms (700), and the arm The length adjustment mechanism (700) can control the standard force arm (300) and the balance force arm (200) to move in opposite directions. Standard moment loading structures (800) are provided at both ends of the standard force arm (300). A balance tension mechanism (900) is provided below the balance force arm (200). The standard moment loading structure (800) and the balance tension structure can be connected to corresponding ends of the balance force arm (200) and the standard force arm (300). When the standard moment loading structure (800) is connected to one end of the standard force arm (300), the balance tension mechanism (900) is connected to the balance force arm (200), so that the connecting arm (600) rotates, thereby balancing the standard force arm (300).

2. The device for balancing the reaction force acting on the ground by the ultra-large torque standard device according to claim 1 is characterized in that; the mounting frame (400) includes an adjusting block (1300) and a fixed block arranged up and down, and the adjusting block (1300) is provided with a relatively arranged receiving groove on the side opposite to the fixed block, and the inner wall of the receiving groove is provided with a protective cushion layer, and the measured torque sensor (500) can be placed between the two receiving grooves, and the adjusting block (1300) is provided with a fixing screw (1400) on both sides of the corresponding receiving groove, and the fixing screw (1400) passes through the adjusting block (1300) up and down, and the lower end of the fixing screw (1400) is threadedly engaged with the fixed block.

3. The device for balancing the reaction force acting on the ground according to the ultra-large torque standard device of claim 1 is characterized in that: the connecting mechanism is provided at a coupling (1000) at one end of the connecting arm (600) close to the mounting frame (400), and a connecting claw (1100) is provided at the end of the coupling (1000), and the connecting claw (1100) can be fixedly connected to the torque sensor (500) to be measured.

4. The device for balancing the reaction force of the ultra-large torque standard device acting on the ground according to claim 1 is characterized in that: the arm length adjustment mechanism (700) includes an adjustment cylinder (710) and a guide rail (720), the adjustment cylinder (710) is fixed to one end of the two connecting arms (600) away from the mounting frame (400) in the horizontal direction, the adjustment cylinder (710) is perpendicular to the connecting arm (600), the guide rail (720) is arranged around the inner wall of the adjustment cylinder (710) along the length of the adjustment cylinder (710), the standard force arm (300) and the balance The force arm (200) is inserted into the corresponding adjustment tube (710); the outer peripheries of the standard force arm (300) and the balance force arm (200) are provided with guide grooves (730) arranged along their length; the outer periphery of the adjustment tube (710) is provided with an adjustment groove penetrating the inner wall of the adjustment tube (710) corresponding to the standard force arm (300) or the balance ratio; an adjustment gear (740) is rotatably provided in the adjustment groove; and the adjustment gear (740) is in driving engagement with a rack (1200) provided on the outer peripheries of the standard force arm (300) and the balance force arm (200).

5. The device for balancing the reaction force of the ultra-large torque standard device acting on the ground according to claim 4 is characterized in that: an adjusting dial (750) connected to the adjusting gear (740) is provided on the outside of the adjusting cylinder (710), and a rotating handle is provided on the outside of the adjusting dial (750); a mounting groove (813) is provided on the periphery of the standard force arm (300) and the balancing force arm (200), the rack (1200) is fixed in the mounting groove (813), and the mounting groove (813) is arranged along the length of the standard force arm (300) and the balancing force arm (200).

6. The device for balancing the reaction force of the ultra-large torque standard device acting on the earth according to claim 1 is characterized in that: the standard torque loading structure (800) includes a standard weight (810), a weight base (820), a weight plate (830) and a lifting mechanism; the weight plate (830) and the weight base (820) are arranged up and down, the lifting mechanism is arranged at the geometric center of the upper end base of the weight, the lifting mechanism is connected to a vertically arranged lifting screw (840), and the upper end of the lifting screw (840) is rotatably provided with a screw located on the weight plate (8 30), the lifting plate (850) can drive the weight plate (830) to rise or fall; the upper surface of the standard weight (810) is provided with a conical positioning groove (811), and the lower surface is provided with a conical positioning pin (812); the outer side of the standard weight (810) is also provided with a mounting groove (813) arranged along its radial direction, and the width of the mounting groove (813) is slightly larger than the diameter of the lifting screw (840), so that the standard weight (810) can be arranged from top to bottom below the weight plate (830); It also includes a plurality of connecting pieces (860), wherein the outer sides of the upper and lower ends of the connecting pieces (860) are provided with connecting protrusions, and the connecting protrusions can be snap-fitted with connecting holes provided on the periphery of the weight plate (830) or the periphery of the standard weight (810).

7. The device for balancing the reaction force of the ultra-large torque standard device acting on the ground according to claim 6 is characterized in that: the lifting mechanism includes a threaded sleeve (870) arranged at the geometric center position of the weight base (820) and threadedly matched with the lifting screw (840), and the threaded sleeve (870) is transmission-connected to the output end of the reducer located in the weight base (820) through a worm gear mechanism.

8. The device for balancing the reaction force acting on the ground by the ultra-large torque standard device according to claim 7 is characterized in that: a support frame (880) is provided at the lower end of the weight base (820), and a support block arranged around the outer periphery of the weight base (820) is provided at the lower end of the support frame (880), and the support block is screwed to the support frame (880), and a horizontally arranged level bubble (890) is also provided below the weight base (820).

9. The device for balancing the reaction force of the ultra-large torque standard device acting on the ground according to claim 1 is characterized in that: the balancing pulling mechanism (900) includes a balancing base (910), the balancing base (910) can move along the length of the balancing force arm (200), a worm gear reduction rod assembly (920) is provided in the balancing base (910), the worm gear reduction rod assembly (920) can be connected to the end of the balancing force arm (200), the worm gear reduction rod assembly (920) is signal-connected to a displacement sensor provided on the standard force arm (300), and after one end of the standard force arm (300) is loaded with a standard torque loading structure (800), the worm gear reduction rod assembly (920) pulls one end of the balancing force arm (200) to put the connecting arm (600) in dynamic balance.

10. The device for balancing the reaction force of the ultra-large torque standard device acting on the ground according to claim 9 is characterized in that: an adjustment guide rail (930) (720) arranged along the length of the balance arm (200) is provided below the balance base (910), the lower end of the balance base (910) is rollingly matched with the adjustment guide rail (930) (720), and a position sensor (940) is provided at the upper end of the balance base (910) to enable the worm gear reduction rod assembly (920) to move to the position directly below the end of the balance arm (200), and fixed brackets (950) that can be unfolded or folded are also provided on both sides of the balance base (910).

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