Measuring tool for flat spring

Abstract

The utility model provides a kind of plate spring measuring tool, belong to plate spring measurement technical field, the plate spring measuring tool has substrate, two positioning components are equipped on substrate, each set of positioning component includes three locating plates, the outer circumferential surface of three locating plates is in abutment with the inner circumferential surface of plate spring eye, left positioning component is slidably connected on substrate;Positioning component further has bottom plate, fixed mounting is equipped on bottom plate, vertical plate is set to the through hole of longitudinal penetration being opened in vertical plate, three are fixedly installed in the front wall of vertical plate and are circumferentially arrayed distribution's hinged seat, the one end of adjusting plate is hinged in hinged seat, and the other end of adjusting plate is installed with locating plate;The support plate of vertical movement is equipped below locating plate, the top surface of support plate is in abutment with the bottom end of plate spring eye;The utility model solves the technical problem that locating shaft size is not adjustable, if the gap of locating shaft and eye inner diameter is too large, then it is not convenient to position plate spring, and it can affect the precision of plate spring measurement.

Description

Technical Field

[0001] This utility model belongs to the field of leaf spring measurement technology, and more specifically, relates to a measuring fixture for leaf springs. Background Technology

[0002] Leaf springs are widely used in automotive suspensions. They are spring beams with approximate strength, composed of several alloy spring leaves of varying lengths and radii of curvature. The parameters of leaf springs are crucial in automotive suspension design. The utility model application with application number CN202021148459.3 (publication number CN212109856U) relates to a leaf spring span measuring mechanism, including a support bracket; V-shaped positioning seats are symmetrically arranged on both sides of the support bracket, the V-shaped positioning seats are movably connected to the support bracket, and the V-shaped positioning seats are used to support and position the leaf spring's lifting lugs; a T-shaped ruler is provided on the leaf spring between the V-shaped positioning seats for measuring the distance from the center of the leaf spring's lifting lug to the center hole of the leaf spring; a positioning shaft is provided inside the leaf spring's lifting lug and contacts it, the positioning shaft can be positioned inside the V-shaped positioning seat; The positioning shaft size of the aforementioned patent is fixed. However, the size of the coil lug varies for different specifications of leaf springs. If the gap between the positioning shaft and the inner diameter of the coil lug is too large, it will be difficult to position the leaf spring and will affect the accuracy of the leaf spring measurement. Utility Model Content

[0003] This utility model provides a measuring fixture for leaf springs, aiming to overcome the technical problem that if the positioning shaft size is not adjustable and the gap between the positioning shaft and the inner diameter of the coil lug is too large, it will be difficult to position the leaf spring and affect the accuracy of leaf spring measurement.

[0004] This utility model is implemented as follows: This utility model provides a measuring fixture for leaf springs, which has a base plate, wherein two positioning components are provided on the base plate; Each group of positioning components includes three positioning plates, which move synchronously and whose outer peripheral surfaces abut against the inner peripheral surfaces of the leaf spring lugs. The positioning component on the left side is slidably connected to the base plate.

[0005] Based on the above technical solution, the measuring fixture for leaf springs of this utility model can be further improved as follows: Furthermore, the positioning component also has a base plate, on which a vertical plate is fixedly installed, and a through hole is formed in the vertical plate. Three hinge seats arranged in a circular array are fixedly installed on the front wall of the upright plate. One end of an adjustment plate is hinged to each hinge seat, and the positioning plate is installed on the other end of each adjustment plate.

[0006] Furthermore, a cylindrical rod is slidably connected longitudinally within the through hole, and three hinge plates are fixedly installed on the circumferential surface of the cylindrical rod. One end of a connecting plate is hinged to the hinge plate, and the other end of the connecting plate is hinged to the adjusting plate.

[0007] Furthermore, a horizontally arranged slide rail is fixedly installed on the substrate, and a slider is slidably connected on the slide rail, with the bottom plate on the left side fixedly installed on the slider.

[0008] Furthermore, a vertically movable support plate is provided below the positioning plate, and the top surface of the support plate abuts against the bottom end of the leaf spring lug.

[0009] Compared with the prior art, the beneficial effects of the measuring fixture for leaf springs provided by this utility model are: By setting three synchronously moving positioning plates, the leaf spring's coiled part can be supported from the inside and the leaf spring can be positioned. Combined with the movement of a set of positioning components on the left, it is easy to adapt to leaf springs of various specifications. By setting a vertically movable support plate, after the positioning plate positions the leaf spring, it plays an auxiliary support role, preventing the positioning plate from being subjected to excessive force when the leaf spring is suspended on the positioning plate. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a front view of an overall measuring fixture for leaf springs; Figure 2 This is an overall side view of a measuring fixture for leaf springs; Figure 3 The attached figure shows an isometric view of the positioning assembly. The components represented by each number are listed below: 1. Base plate; 2. Slide rail; 21. Slider; 22. Pad; 31. Rear plate; 32. Cylinder A; 4. Positioning plate; 41. Base plate; 42. Vertical plate; 43. Hinge seat; 44. Adjusting plate; 45. Through hole; 46. Cylindrical rod; 47. Hinge plate; 48. Connecting plate; 49. Guide sleeve; 5. Support plate; 51. Cylinder B. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] Example 1 like Figure 1-3 As shown, this utility model provides a measuring fixture for leaf springs, which has a base plate 1, wherein two positioning components are provided on the base plate 1. Each positioning component includes three positioning plates 4, which move synchronously and whose outer peripheral surfaces abut against the inner peripheral surfaces of the leaf spring lugs. The left positioning component is slidably connected to the base plate 1.

[0018] Optionally, in the above technical solution, the positioning component also has a base plate 41, on which a vertical plate 42 is fixedly installed, and a through hole 45 is provided on the vertical plate 42. Three hinge seats 43 arranged in a circular array are fixedly installed on the front wall of the upright plate 42. One end of an adjusting plate 44 is hinged to each hinge seat 43, and a positioning plate 4 is installed on the other end of each adjusting plate 44.

[0019] Optionally, in the above technical solution, a cylindrical rod 46 is longitudinally slidably connected inside the through hole 45, and three hinge plates 47 are fixedly installed on the circumferential surface of the cylindrical rod 46. One end of a connecting plate 48 is hinged to the hinge plate 47, and the other end of the connecting plate 48 is hinged to the adjusting plate 44.

[0020] Optionally, in the above technical solution, a horizontally arranged slide rail 2 is fixedly installed on the substrate 1, and a slider 21 is slidably connected on the slide rail 2. The left bottom plate 41 is fixedly installed on the slider 21.

[0021] Optionally, in the above technical solution, a vertically movable support plate 5 is provided below the positioning plate 4, and the top surface of the support plate 5 abuts against the bottom end of the leaf spring lug.

[0022] Furthermore, a rear plate 31 is fixedly installed on the base plate 41 and at the rear end of the upright plate 42. A cylinder A32 is installed on the rear plate 31. The piston rod of the cylinder A32 extends forward, passes through the rear plate 31 and connects to the rear end of the cylindrical rod 46, driving the cylindrical rod 46 to move back and forth. That is, the cylinder A32 is arranged longitudinally.

[0023] Furthermore, a cylinder B51 is fixedly installed at the front end of the base plate 41. The piston rod of the cylinder B51 extends upward and its end is connected to the middle of the bottom wall of the support plate 5; that is, the cylinder B51 is set vertically.

[0024] Furthermore, a horizontally arranged cylinder can be fixedly installed on the base plate 1. The cylinder piston rod extends to the left and is fixedly connected to the left base plate 41, which facilitates control of the movement position of the left base plate 41 and prevents the left base plate 41 from moving during measurement.

[0025] Among them, the hinge plate 47 and the hinge seat 43 are in a one-to-one correspondence, and the hinge seat 43 is distributed in a circular array along the center of the through hole 45. Among them, a guide sleeve 49 is fixedly installed on the upper front wall of the upright plate 42. The inner diameter of the guide sleeve 49 is the same as the diameter of the through hole 45. The two are concentrically set to provide guidance for the longitudinal movement of the cylindrical rod 46.

[0026] Among them, cylinders B51 and A32 are both existing cylinders, with priority given to cylinders with guide rods and external air sources; the cylinder piston rod needs to extend slowly, which can be controlled by a one-way throttle valve.

[0027] Among them, the cylindrical rod 46 moves back and forth, causing the three positioning plates 4 to move synchronously. When the diameter of the circle formed by the three positioning plates 4 changes, the center point position remains unchanged, with the center of the through hole 45 as the center point.

[0028] Working principle: When in use, adjust the position of the left positioning component according to the length of the leaf spring, put the right end of the leaf spring on the outer periphery of the three positioning plates 4 of the right positioning component, and put the left end of the leaf spring on the outer periphery of the three positioning plates 4 of the left positioning component. In the initial state, the piston rods of cylinders B51 and A32 are fully retracted. Start the right and left cylinders A32 in sequence, so that their piston rods extend and drive the cylindrical rod 46 to move forward, so that the inner end of the hinge plate 47 moves forward and the outer end of the hinge plate 47 moves outward, pushing the adjusting plate 44 outward. The rear end of the adjusting plate 44 rotates on the hinge seat 43, and the front end of the adjusting plate 44 drives the corresponding positioning plate 4 to move outward until the outer peripheral surface of the positioning plate 4 abuts against the inner wall of the ear. Start cylinder B51 to move the support plate 5 upward, so that the top wall of the support plate 5 abuts against the lower end of the leaf spring lug, thus supporting the leaf spring.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A measuring fixture for leaf springs, comprising a base plate (1), characterized in that, The substrate (1) is provided with two positioning components; Each group of positioning components includes three positioning plates (4), which move synchronously and whose outer peripheral surfaces abut against the inner peripheral surfaces of the leaf spring lugs. The positioning component on the left side is slidably connected to the base plate (1).

2. The measuring fixture for leaf springs according to claim 1, characterized in that, The positioning component also has a base plate (41), on which a vertical plate (42) is fixedly installed, and a through hole (45) is provided in the vertical plate (42) through which the longitudinal through is provided; Three hinge seats (43) arranged in a circular array are fixedly installed on the front wall of the upright plate (42). One end of an adjusting plate (44) is hinged to each hinge seat (43), and the positioning plate (4) is installed on the other end of each adjusting plate (44).

3. The measuring fixture for leaf springs according to claim 2, characterized in that, A cylindrical rod (46) is longitudinally slidably connected inside the through hole (45). Three hinge plates (47) are fixedly installed on the circumferential surface of the cylindrical rod (46). One end of a connecting plate (48) is hinged to the hinge plate (47), and the other end of the connecting plate (48) is hinged to the adjusting plate (44).

4. A measuring fixture for leaf springs according to claim 3, characterized in that, A horizontally arranged slide rail (2) is fixedly installed on the substrate (1), and a slider (21) is slidably connected on the slide rail (2). The bottom plate (41) on the left side is fixedly installed on the slider (21).

5. A measuring fixture for leaf springs according to claim 1, characterized in that, Below the positioning plate (4) is a vertically movable support plate (5), the top surface of which abuts against the bottom end of the leaf spring lug.

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