Point position adjustable type universal force measuring frame

Abstract

The invention belongs to the field of force value measurement, and provides a point-position-adjustable universal force measurement frame, a product is fixed above a guide rail, a force application device is slidably mounted on the guide rail in a matched manner, the force application device applies force to the product through a first steel wire rope, the first steel wire rope is connected with an annular second steel wire rope through an explosion control buckle, and the second steel wire rope is hung on the product; a direction plate is arranged on the force application device, provides a reference for the direction of the first steel wire rope and can be switched in the directions of 45 degrees, 90 degrees and 135 degrees. The device has universality, the suspension requirements of products with different interfaces can be met by replacing the suspension mechanism, a set of force measuring frame does not need to be independently designed each time, the reversing point position can be freely adjusted, and the reversing point position can move in the horizontal direction by applying the guide rail sliding block moving mechanism and the gear and rack mechanism; point position adjusting mechanisms in the horizontal direction and the vertical direction are integrated and are independent from each other.

Description

Technical Field

[0001] The invention belongs to the field of force value measurement, relates to a force measuring frame, and specifically relates to a universal clamp with adjustable points for detecting the pull-off forces of multiple components in a product. Background Art

[0002] Before delivering the product to the customer, force measurement is required to ensure that the force calibration fully meets the customer's needs. Due to differences in product structure, the force measurement points always vary within a certain range of space, and one point often needs to measure the force in multiple directions including 45°, 90°, 135°, etc.

[0003] Traditional force frames need to calculate the positional relationship between the suspension position and the force measurement point separately, and then set up multiple reversing mechanisms (usually roller groups) on the plane of the force frame to convert the forces in various directions to the horizontal direction. After soft or hard connection with the force-applying mechanism, the force measurement requirements at multiple points and directions can be achieved. However, its shortcomings are also obvious: 1) The universality of the force frame designed for the product is almost zero; 2) Each point change requires a separate design and manufacturing of the force frame, which will cause a lot of waste; 3) The operation is cumbersome and the waiting period is long.

[0004] Therefore, when product models become more and more diverse, the above method is no longer applicable to production. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a universal force measuring frame with adjustable points, which is compatible with a variety of products and meets universality. The reversing points can be freely adjusted and correspond one-to-one with the force measuring points within a certain range. The structure is stable and the force measurement is accurate and reliable.

[0006] The technical solution of the present invention is as follows:

[0007] A universal force measuring frame with adjustable point position, wherein a product is fixed above a guide rail, a force applying device is slidably mounted on the guide rail, the force applying device applies force to the product through a first steel wire rope, the first steel wire rope is connected to a ring-shaped second steel wire rope through an explosion control buckle, and the second steel wire rope is hung on the product; a direction plate is provided on the force applying device, the direction plate provides a reference for the direction of the first steel wire rope, and the direction plate can be switched in the directions of 45°, 90° and 135°.

[0008] Furthermore, the guide rail is fixedly mounted on a platform in the middle of the rack, a product connection block is provided above the rack, and the product is mounted on the product connection block through a latch.

[0009] Furthermore, the force-applying device includes a connecting plate, which is installed on the guide rail through a slider. A force-applying unit, a fixing unit, a guiding unit and a direction adjustment unit are provided on the connecting plate along the direction of the guide rail. The force-applying unit applies torque to the first steel wire rope, the fixing unit fixes the position of the connecting plate on the guide rail, the guiding unit provides guidance for the first steel wire rope, and the direction adjustment unit cooperates with the direction plate to adjust the direction of the first steel wire rope.

[0010] Furthermore, the fixing unit includes a gear, a pinion, a gear shaft, a small rack, a stop seat and a handle nut; the gear is arranged at the bottom of the connecting plate, and the gear is meshed with the rack; the center of the gear is connected to the gear shaft, the gear shaft is a spline shaft, and a pinion is also installed on the gear shaft; the connecting plate is hollowed out at the position corresponding to the gear, and the stop seat is installed above the hollowing of the connecting plate, and the handle nut is rotated so that the rod body connected below the handle nut moves vertically on the stop seat, and a small rack is installed at the bottom of the rod body; when the rod body moves to the lower limit position, the small rack meshes with the pinion.

[0011] Furthermore, the number of teeth of the pinion is at least three times the number of teeth of the gear.

[0012] Furthermore, the force-applying unit includes a nut, a screw, a bearing, a nut seat, a tension sensor, an adapter block and a wire holder. The nut and the screw cooperate with each other to form a handle assembly. The screw is installed in cooperation with the nut seat through the bearing. One end of the screw passes through the nut seat and is connected to the tension sensor. The other end of the tension sensor is connected to the wire holder through the adapter block. The end of the first wire rope is fixed by the wire holder. The adapter block and the wire holder are rotatably connected by a pin.

[0013] Furthermore, the guide unit includes a guide seat and a first guide roller, the guide seat is installed above the connecting plate, and the first guide roller is fixed on the top of the guide seat.

[0014] Furthermore, the direction adjustment unit includes a second guide roller, a mounting plate, a guide seat, a roller mounting seat, a core shaft and a roller; the second guide roller is fixed on the top of the guide seat, and the guide seat is mounted on the mounting plate; the roller mounting seat is mounted on the mounting plate, and the roller is rotatably mounted on the roller mounting seat through the core shaft; the direction seat is mounted on the mounting plate, and the direction plate is detachably mounted on the direction seat; the first steel wire rope passes through the second guide roller and then bypasses the roller, and extends out according to the direction set by the direction plate.

[0015] Furthermore, the steering unit also includes a round pin, a diamond pin and a guide pin. The direction plate is laterally connected to the direction seat through the round pin and the diamond pin respectively. The direction seat is provided with three holes that match the diamond pins. The holes of the three diamond pins enable the direction plate to be aligned in the directions of 45°, 90° and 135° respectively; the direction seat is fixed to the mounting plate through the guide pin.

[0016] Furthermore, the direction adjustment unit also includes a guide rod seat, a guide rod, a positioning block, and a guide rod sleeve. The guide rod seat is fixed on the connecting plate, the guide rod is arranged on the guide rod seat, and the direction of the guide rod is perpendicular to the horizontal plane of the guide rail; the guide rod sleeve is fixed on the bottom of the mounting plate, the guide rod sleeve is sleeved on the guide rod, and the mounting plate can move along the guide rod on the horizontal plane perpendicular to the guide rail through the guide rod sleeve; the guide rod seat is provided with a scale on the front, the upper end of the positioning block is fixed on the mounting plate, the bottom of the positioning block is in the shape of a pointer, and the bottom of the positioning block matches the scale of the guide rod seat.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. It is universal. The suspension requirements of products with different interfaces can be met by replacing the suspension mechanism, without the need to design a set of force measuring frames separately each time.

[0019] 2. The reversing point can be adjusted freely. The guide rail slider moving mechanism and the gear rack mechanism are used to realize the horizontal movement of the reversing point.

[0020] 3. Double guide rail positioning movement and screw locking are used to meet the adjustment amount in the vertical direction which is much smaller than that in the horizontal direction.

[0021] 4. The point adjustment mechanisms in the horizontal and vertical directions are integrated and independent of each other.

[0022] 5. The product force measuring point and force applying mechanism are connected through soft connection, and the adjustment and force measurement are stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation method of the patent of the present invention, the following is a brief introduction to the drawings required for use in the implementation method. It should be understood that the following drawings only show certain embodiments of the patent of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is the composition of the present invention.

[0025] Figure 2 It is a schematic diagram of the main components of the functional device and mechanism of the present invention.

[0026] Figure 3 It is a schematic diagram of the main components of the vertical positioning device of the present invention.

[0027] Figure 4 It is a structural diagram of the soft connection component of the present invention.

[0028] In the above figure, the rack, 2-guide rail, 3-rack, 4-slider, 5-rack fixing block, 6-product, 7-product connecting block, 8-pin, 9-guide rail positioning pin, 10-rack limit block, 11-connecting plate, 12-nut, 13-screw, 14-bearing cover, 15-bearing, 16-nut seat, 17-tension sensor, 18-adapter block, 19-pin, 20-cable clamp, 21-guide seat, 22.1-first guide roller, 22.2-second guide roller, 23-guide rod seat, 24-guide rod, 25-locking Nut, 26-locking screw, 27-stop seat, 28-handle nut, 29-gear, 30-pinion, 31-gear shaft, 32-rack mounting seat, 33-pinion rack, 34-mounting plate, 35-guide seat, 36-roller mounting seat, 37-core shaft, 38-roller, 39-direction plate, 40-round pin, 41-diamond pin, 42-guide pin, 43-direction seat, 44-positioning block, 45-guide rod sleeve, 46-first wire rope, 47-U-shaped buckle, 48-explosion control buckle, 49-second wire rope. DETAILED DESCRIPTION

[0029] This section is an embodiment of the present invention, which is used to explain and illustrate the technical solution of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the orientations or positional relationships in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or a point connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] Embodiment 1:

[0033] The present invention adds a positioning device with adjustable points, a limiting mechanism and a force-applying structure to the traditional force-measuring frame. The positioning device is horizontally placed on the force-measuring frame, and the product connection mechanism hangs and fixes the product. After the positioning device is adjusted to the right position in the horizontal and vertical directions, the limiting mechanism fixes the positioning device and the force-applying mechanism, and the product force measurement is carried out. The above method can meet the force measurement requirements of multiple points of different products.

[0034] The point-adjustable universal force measuring frame introduced in the present invention has the particularity that the suspension mechanism is easy to replace, the point positions are adjustable in the horizontal direction and the vertical direction, and the force measuring requirements of multiple points of various products can be met.

[0035] The universal force measuring frame with adjustable points in the present invention needs to calculate the force measuring points of the replaced products according to the positional relationship between the force measuring points and the suspension points of the products, and determine the points to be adjusted in the form of coordinates, so as to perform product force measurement. The present invention aims to use a force measuring frame to convert the fixed flat plate structure of the traditional force measuring frame into a mechanism with adjustable points in the horizontal and vertical directions, which can be adjusted freely to meet the force measurement requirements of a variety of existing or future designed products, and give full play to the versatility.

[0036] The force frame is vertical, equipped with rollers at the bottom, and the working location is flexible and changeable; two cantilevers extend from the top in the vertical direction to install the product connection block and hang the product; cast iron plates are laid on the plane formed by the channel steel, and the adjustment mechanism and positioning device are installed. The adjustment mechanism includes a horizontal adjustment mechanism and a vertical adjustment mechanism. The horizontal adjustment mechanism is formed by a guide rail slider assembly and a gear rack assembly, and the vertical adjustment mechanism is formed by a linear bearing guide rod assembly and a locking nut bolt assembly. After the positioning point is calculated by the angle and the hanging height, the force application platform is adjusted into place through the horizontal adjustment mechanism and the vertical adjustment mechanism. The force application mechanism uses a soft connection structure to apply force to the force measurement point on the product, and the force sensor can measure the corresponding parameters.

[0037] A universal force measuring frame with adjustable point position, wherein a product 6 is fixed above a guide rail 2, a force applying device is slidably mounted on the guide rail 2, the force applying device applies force to the product 6 via a first steel wire rope 46, the first steel wire rope 46 is connected to a ring-shaped second steel wire rope 49 via an explosion control buckle 48, and the second steel wire rope 49 is hung on the product 6; a direction plate 39 is provided on the force applying device, the direction plate 39 provides a reference for the direction of the first steel wire rope 46, and the direction plate 39 can be switched in the directions of 45°, 90° and 135°.

[0038] The guide rail 2 is fixedly mounted on a platform in the middle of the shelf 1 . A product connection block 7 is provided above the shelf 1 , and the product 6 is mounted on the product connection block 7 via a latch 8 .

[0039] The force-applying device includes a connecting plate 11, which is installed on the guide rail 2 through a slider 4. A force-applying unit, a fixing unit, a guiding unit and a direction adjustment unit are provided on the connecting plate 11 along the direction of the guide rail 2. The force-applying unit applies a torque to the first steel wire rope 46, the fixing unit fixes the position of the connecting plate 11 on the guide rail 2, the guiding unit provides guidance for the first steel wire rope 46, and the direction adjustment unit cooperates with the direction plate 39 to adjust the direction of the first steel wire rope 46.

[0040] The fixing unit includes a gear 29, a pinion 30, a gear shaft 31, a small rack 33, a stop seat 27 and a handle nut 28; the gear 29 is arranged at the bottom of the connecting plate 11, and the gear 29 is meshed with the rack 3; the center of the gear 29 is connected with the gear shaft 31, the gear shaft 31 is a spline shaft, and the pinion 30 is also installed on the gear shaft 31; the connecting plate 11 is hollowed out at the position corresponding to the gear 29, and the stop seat 27 is installed above the hollow of the connecting plate 11, and the handle nut 28 is rotated to make the rod body connected below the handle nut 28 move vertically on the stop seat 27, and a small rack 33 is installed at the bottom of the rod body; when the rod body moves to the lower limit position, the small rack 33 meshes with the pinion 30.

[0041] The number of teeth of the pinion 30 is at least three times the number of teeth of the gear 29 .

[0042] The force-applying unit includes a nut 12, a screw 13, a bearing 15, a nut seat 16, a tension sensor 17, an adapter block 18 and a wire gripper 20. The nut 12 and the screw 13 cooperate with each other to form a handle assembly. The screw 13 is installed in cooperation with the nut seat 16 through the bearing 15. One end of the screw 13 passes through the nut seat 16 and is connected to the tension sensor 17. The other end of the tension sensor 17 is connected to the wire gripper 20 through the adapter block 18. The end of the first wire rope 46 is fixed by the wire gripper 20; the adapter block 18 and the wire gripper 20 are rotatably connected by a pin 19.

[0043] The guide unit comprises a guide seat 21 and a first guide roller 22 . 1 . The guide seat 21 is installed above the connecting plate 11 , and the first guide roller 22 . 1 is fixed on the top of the guide seat 21 .

[0044] The direction adjustment unit includes a second guide roller 22.2, a mounting plate 34, a guide seat 35, a roller mounting seat 36, a core shaft 37 and a roller 38; the second guide roller 22.2 is fixed on the top of the guide seat 35, and the guide seat 35 is mounted on the mounting plate 34; the roller mounting seat 36 is mounted on the mounting plate 34, and the roller 38 is rotatably mounted on the roller mounting seat 36 through the core shaft 37; the direction seat 43 is mounted on the mounting plate 34, and the direction plate 39 is detachably mounted on the direction seat 43; the first steel wire rope 46 passes through the second guide roller 22.2 and then bypasses the roller 38, and extends out according to the direction set by the direction plate 39.

[0045] The direction adjustment unit also includes a round pin 40, a diamond pin 41 and a guide pin 42. The direction plate 39 is laterally connected to the direction seat 43 through the round pin 40 and the diamond pin 41 respectively. The direction seat 43 is provided with three holes that match the diamond pin 41. The three holes of the diamond pin 41 make the direction plate 39 align with the directions of 45°, 90° and 135° respectively; the direction seat 43 is fixed to the mounting plate 34 through the guide pin 42.

[0046] The direction adjustment unit also includes a guide rod seat 23, a guide rod 24, a positioning block 44, and a guide rod sleeve 44. The guide rod seat 23 is fixed on the connecting plate 11, and the guide rod 24 is arranged on the guide rod seat 23. The direction of the guide rod 24 is perpendicular to the horizontal plane of the guide rail 2; the guide rod sleeve 44 is fixed to the bottom of the mounting plate 34, and the guide rod sleeve 44 is sleeved on the guide rod 24. The mounting plate 34 can move along the guide rod 24 on a horizontal plane perpendicular to the guide rail 2 through the guide rod sleeve 44; the guide rod seat 23 is provided with a scale in the front direction, the upper end of the positioning block 44 is fixed on the mounting plate 34, the bottom of the positioning block 44 is in the shape of a pointer, and the bottom of the positioning block 44 matches the scale of the guide rod seat 23.

[0047] Embodiment 2:

[0048] Figure 1 This is the structural diagram of the force frame, which has the property of adjustable points in the horizontal and vertical directions, and can meet the force measurement requirements of multiple points of different products. The force frame consists of two parts, one is the frame body, which is based on the frame 1. The frame 1 is composed of channel steel and 45 steel, and a cast iron plate is laid on the upper surface. The frame is equipped with guide rails 2, racks 3 and rack fixing blocks 5. The two guide rails 2 are installed in parallel on the cast iron plate of the frame 1 and connected with screws. 15 rack fixing blocks 5 are equidistantly installed on the cast iron plate for installing racks 3. There are 4 mounting holes at the top of the frame. The product connection block 7 is connected to the frame by bolts and nuts, and the product 6 is hung on the frame body with a pin 8. The 4 sliders 4 are adapted to the guide rails, and the other part of the force frame, the functional device and mechanism, is connected thereto. The combination of the guide rail 2 and the slider 4 realizes free movement in the horizontal direction. The rack 3 and the gear 29 are meshed and roll with the sliding of the slider.

[0049] Figure 2The connecting plate 11 is equipped with a rack mounting seat 32 and a stop seat 27. The handle nut 28 is turned to lower the height of the small rack 33 and mesh with the small gear 30 to achieve a braking effect. The small gear 30, the gear 29 and the mandrel 30 rotate and lock synchronously. The nut 12 and the screw 13 are the force-applying components during force measurement. They are installed in the nut seat 16. The nut seat also has a bearing 15 and a bearing cover 14. The two ends of the tension sensor 17 are respectively connected to the screw 13 and the adapter block 18. The adapter block is connected to the wire clamp 20, which has the function of clamping the Φ4mm steel wire rope. The pins 19 are connected in between. The guide seat 21 is equipped with bearings and two guide rollers 20 to correct the angle difference caused by the offset of the vertical positioning device to ensure that the steel wire rope and the screw 13 are on the same line.

[0050] Figure 3 It is a vertical positioning device, which can make linear motion along two guide rods 24 as a whole. The guide rod seat 23 is installed on the connecting plate 11. When the positioning block 44 indicates the fixed position, tighten the locking nut 25, and cooperate with the locking screw 26 to fix the vertical positioning device at the specified position. The device is based on the mounting plate 34. The lower surface is composed of a guide rod sleeve 45 with a linear bearing inside. The upper surface has a guide seat 35, a roller mounting seat 36 and a direction seat 43, all of which are connected by screws. The guide seat 35 is installed with a guide roller '22 to control the direction of the wire rope. The mandrel 37 clamped by the roller mounting seat 36 is covered with a roller 38, which rotates with the movement of the screw 13 and changes the direction of the force on the wire rope. The direction seat 43 is equipped with a key and a guide pin 42, which can be disassembled as a whole to facilitate the adjustment of the direction plate 39. By changing the installation position of the round pin 40 and the diamond pin 41, the direction plate 39 can achieve 45°, 90° and 135° direction control. After the direction seat is removed, the direction of the wire rope 46 can be controlled to any other angle through point calculation.

[0051] Figure 4 The connecting component, the steel wire rope 46 is the main part, connected to the wire clamp 20, so that the force-applying mechanism can act on the product. The U-shaped buckle 47 is used to fix the rotating steel wire rope 46. The Φ2 steel wire rope 49 is rotated around the explosion control buckle 48 to form an explosion control ring connected to the product, which is directly connected to the product.

[0052] The mechanical structure adopted by the present invention can be divided into a horizontal direction adjustment module, a horizontal direction locking mechanism, a vertical direction adjustment module, a vertical direction locking mechanism, a force application mechanism, a mounting module and a connecting mechanism according to the function. It has the following characteristics:

[0053] 1) The horizontal adjustment module is a guide rail slider, which has the advantages of smooth movement, precise positioning and fast adjustment speed;

[0054] 2) The horizontal locking mechanism consists of two gear rack sets. When the small gear rack set is meshed, the relative movement of the other gear rack set that remains in meshing state can be restricted, thus realizing the function of rapid stop limit.

[0055] 3) The vertical adjustment module is a linear bearing and guide rod, which moves smoothly and can achieve precise position adjustment when combined with the positioning plate;

[0056] 4) The vertical adjustment module only has a locking nut and a locking screw, which has a simple structure and can achieve rapid switching between locking and unlocking;

[0057] 5) The force-applying mechanism is a nut with a handle and a long force arm, which can apply force to the product by manpower, and the digital tension sensor can easily measure the force value;

[0058] 6) The mounting module components can be quickly replaced according to the connection size of different products;

[0059] 7) The connection structure is a soft connection, which eliminates the angle deviation caused by different points and makes the adjustment and force measurement stable and reliable;

[0060] 8) The above modules and mechanisms are independent of each other, but also work closely with each other;

[0061] 9) It can be disassembled and replaced, making maintenance and repair easy.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A universal force frame with adjustable point position, characterized in that: The product (6) is fixed above the guide rail (2), and the force-applying device is slidably mounted on the guide rail (2). The force-applying device applies force to the product (6) via a first steel wire rope (46). The first steel wire rope (46) is connected to a ring-shaped second steel wire rope (49) via an explosion-control buckle (48), and the second steel wire rope (49) is hung on the product (6). A direction plate (39) is provided on the force-applying device, and the direction plate (39) provides a reference for the direction of the first steel wire rope (46). The direction plate (39) can be switched in directions of 45°, 90°, and 135°.

2. The universal force frame with adjustable point position according to claim 1, characterized in that: The guide rail (2) is fixedly mounted on a platform in the middle of the shelf (1); a product connection block (7) is provided above the shelf (1); and the product (6) is mounted on the product connection block (7) via a latch (8).

3. The universal force frame with adjustable point position according to claim 1, characterized in that: The force-applying device comprises a connecting plate (11), wherein the connecting plate (11) is mounted on the guide rail (2) via a slider (4), and a force-applying unit, a fixing unit, a guiding unit and a direction-adjusting unit are provided on the connecting plate (11) along the direction of the guide rail (2). The force-applying unit applies a torque to the first steel wire rope (46), the fixing unit fixes the position of the connecting plate (11) on the guide rail (2), the guiding unit provides guidance for the first steel wire rope (46), and the direction-adjusting unit cooperates with a direction plate (39) to adjust the direction of the first steel wire rope (46).

4. The universal force frame with adjustable point position according to claim 3, characterized in that: The fixing unit comprises a gear (29), a pinion (30), a gear shaft (31), a small rack (33), a stop seat (27) and a handle nut (28); the gear (29) is arranged at the bottom of the connecting plate (11), and the gear (29) is meshed with the rack (3); the center of the gear (29) is matched and connected with the gear shaft (31), the gear shaft (31) is a spline shaft, and the gear shaft (31) is also equipped with a pinion (30); the connecting plate (11) is hollowed out at a position corresponding to the gear (29), and the stop seat (27) is installed above the hollowing of the connecting plate (11); by rotating the handle nut (28), the rod body connected below the handle nut (28) moves vertically on the stop seat (27), and the bottom of the rod body is equipped with a small rack (33); when the rod body moves to the lower limit position, the small rack (33) meshes with the pinion (30).

5. The point-adjustable universal force frame according to claim 4, characterized in that: The number of teeth of the pinion (30) is at least three times the number of teeth of the gear (29).

6. The universal force frame with adjustable point position according to claim 3, characterized in that: The force applying unit comprises a nut (12), a screw (13), a bearing (15), a nut seat (16), a tension sensor (17), an adapter block (18) and a wire clamp (20); the nut (12) and the screw (13) cooperate with each other to form a handle assembly; the screw (13) is installed in cooperation with the nut seat (16) through the bearing (15); one end of the screw (13) passes through the nut seat (16) and is connected to the tension sensor (17); the other end of the tension sensor (17) is connected to the wire clamp (20) through the adapter block (18); the end of the first steel wire rope (46) is fixed by the wire clamp (20); the adapter block (18) and the wire clamp (20) are rotatably connected through a pin (19).

7. The universal force frame with adjustable point position according to claim 3, characterized in that: The guide unit comprises a guide seat (21) and a first guide roller (22.1); the guide seat (21) is installed above the connecting plate (11); and the first guide roller (22.1) is fixed on the top of the guide seat (21).

8. The point-adjustable universal force frame according to claim 3, characterized in that: The direction adjustment unit comprises a second guide roller (22.2), a mounting plate (34), a guide seat (35), a roller mounting seat (36), a core shaft (37) and a roller (38); the second guide roller (22.2) is fixed on the top of the guide seat (35), and the guide seat (35) is mounted on the mounting plate (34); the roller mounting seat (36) is mounted on the mounting plate (34), and the roller (38) is rotatably mounted on the roller mounting seat (36) through the core shaft (37); the direction seat (43) is mounted on the mounting plate (34), and the direction plate (39) is detachably mounted on the direction seat (43); the first steel wire rope (46) passes through the second guide roller (22.2) and then bypasses the roller (38), and extends out according to the direction set by the direction plate (39).

9. The universal force frame with adjustable point position according to claim 8, characterized in that: The direction adjustment unit further comprises a round plug (40), a diamond plug (41) and a guide plug (42); the direction plate (39) is laterally connected to a direction seat (43) through the round plug (40) and the diamond plug (41), respectively; the direction seat (43) is provided with three holes for matching the diamond plug (41); the holes of the three diamond plugs (41) enable the direction plate (39) to be aligned with directions of 45°, 90° and 135° respectively; the direction seat (43) is fixed to the mounting plate (34) through the guide plug (42).

10. The universal force frame with adjustable point position according to claim 8, characterized in that: The direction adjustment unit further comprises a guide rod seat (23), a guide rod (24), a positioning block (44) and a guide rod sleeve (44); the guide rod seat (23) is fixed on the connecting plate (11); the guide rod (24) is arranged on the guide rod seat (23); the direction of the guide rod (24) is perpendicular to the horizontal plane of the direction of the guide rail (2); the guide rod sleeve (44) is fixed on the bottom of the mounting plate (34); the guide rod sleeve (44) is sleeved on the guide rod (24); the mounting plate (34) can move along the guide rod (24) on a horizontal plane perpendicular to the guide rail (2) through the guide rod sleeve (44); a scale is arranged on the front of the guide rod seat (23); the upper end of the positioning block (44) is fixed on the mounting plate (34); the bottom of the positioning block (44) is in the shape of a pointer; the bottom of the positioning block (44) matches the scale of the guide rod seat (23).

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