Spring processing elastic force detection tool

Abstract

The utility model relates to spring detection equipment technical field discloses a kind of spring processing spring force detection frock, including base, fixedly connected with stand on base, the side fixedly connected with digital push-pull force gauge of stand on base, vertical rotation is connected with screw rod in stand, vertical fixedly connected with scale in one side of stand, and digital head is slidably connected on scale, loading pressure rod is slidably connected in stand, and loading pressure rod middle position is connected with screw rod thread, one side of digital head is connected with loading pressure rod, and external sensor is fixedly connected with loading pressure rod front side, and external sensor is electrically connected with digital push-pull force gauge by wire. Coaxial positioning of spring is realized using reversible positioning shaft, which can quickly assemble and disassemble spring, prevent deviation and pop out when compressed, and the shaft hole in the upper pressing block can completely avoid the positioning shaft, without limiting the free compression stroke of spring, thereby ensuring the accuracy of spring force detection data.

Description

Technical Field

[0001] This utility model relates to the field of spring testing equipment technology, and in particular to a spring processing elasticity testing fixture. Background Technology

[0002] The purpose of spring force testing is to verify whether the spring force meets the design standards, and to ensure that the spring can stably perform its functions of buffering, reset, and support in actual working conditions, so as to avoid problems such as insufficient spring force or overload failure affecting the safety and reliability of the whole machine.

[0003] In the process of spring force testing, the spring is subjected to simulated working conditions such as stretching and compression using specialized testing fixtures or equipment. Sensors are used to collect data such as spring force value and deformation in real time. However, when existing spring force testing equipment compresses the spring, the force is uneven during the compression process, causing the spring to shift laterally and resulting in force imbalance. This makes the spring prone to deviating from the positioning track during compression, which can lead to ejection. This not only affects testing safety but can also damage the spring or the equipment. Therefore, the existing Chinese utility model patent with publication number CN222599103U, "Rapid Positioning Device for Automotive Spring Force Testing Device", proposes a positioning device that sets up a moving plate, telescopic device, second clamping plate, fixed rod, slide groove, and slider. Through the cooperation between the telescopic device, slide groove, and slider, the positioning device enables the first and second fixed plates to simultaneously limit the two ends of the spring.

[0004] Therefore, it can be seen that after the existing technology limits the two ends of the spring, the clamping plates one and two clamp the ends of the spring. The limiting position will interfere with the deformation of the ends of the spring, thereby restricting the free compression stroke of the spring. This will cause the actual maximum compression to be less than the theoretical value, and thus make the detected elastic force data lower and deviate from the true elastic force characteristics of the spring. Utility Model Content

[0005] The purpose of this utility model is to provide a spring processing elasticity detection fixture, in which the positioning shaft is coaxially limited to the spring, and the upper pressure block shaft hole avoids the positioning shaft, which not only prevents the spring from popping out, but also does not interfere with the compression stroke, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A spring processing force testing fixture includes a base, a support frame fixedly connected to the base, a digital push-pull force gauge fixedly connected to the base near the support frame, a lead screw vertically rotatably connected inside the support frame, a scale vertically fixedly connected to one side of the support frame, a digital display head slidably connected to the scale, a loading rod slidably connected inside the support frame, and the middle of the loading rod being threadedly connected to the lead screw, one side of the digital display head being connected to the loading rod, an external sensor fixedly connected to the front side of the loading rod, the external sensor being electrically connected to the digital push-pull force gauge via a wire, an upper pressure platform provided at the lower end of the external sensor, the upper pressure platform including an upper pressure block and a connecting seat, the upper pressure block and the connecting seat being connected by multiple support arms, the connecting seat being fixedly connected to the lower end of the external sensor, a positioning seat fixedly connected to the base at a position coaxial with the upper pressure platform, a mounting block detachably connected to the positioning seat, and a positioning shaft movably connected to the mounting block.

[0008] As a further preferred embodiment of this utility model, a handwheel is fixedly connected to the upper end of the lead screw extending above the upright frame. Manually turning the handwheel can drive the lead screw to rotate, thereby controlling the vertical lifting and lowering movement of the loading rod through threaded transmission.

[0009] As a further preferred embodiment of this utility model, a recessed groove is provided at the center of the mounting block. The recessed groove is used to adapt to the assembly and installation of studs, providing an installation structure for the detachable fixing of the mounting block and the positioning seat.

[0010] As a further preferred embodiment of this utility model, a stud is fixedly connected to the lower end of the mounting block, the stud is threaded into the groove, and two shaft seats are symmetrically fixedly connected to the mounting block. The shaft seats have waist-shaped countersunk holes, and a rotating shaft is transversely inserted between the two waist-shaped countersunk holes. Setting a rotating shaft between the two shaft seats can provide conditions for the connection between the positioning shaft and the mounting block.

[0011] As a further preferred embodiment of this utility model, a positioning block is fixedly connected to the bearing seat.

[0012] As a further preferred embodiment of this utility model, a connecting block is fixedly connected to one end of the positioning shaft, and positioning grooves adapted to the positioning block are opened on both sides of the positioning shaft. The connecting block is rotatably connected to the rotating shaft, and the positioning shaft can be rotated and opened by ninety degrees around the rotating shaft through the connecting block, which facilitates the quick loading and unloading of the spring to be tested on the positioning shaft. At the same time, the spring is sleeved on the outside of the positioning shaft, which can prevent the spring from shifting due to compression deformation and prevent accidental pop-out during the testing process.

[0013] As a further preferred embodiment of this utility model, the upper pressure block has a through hole in the middle with a diameter larger than the outer diameter of the positioning shaft. When the upper pressure block moves down with the loading rod to apply a compressive load to the spring, its internal shaft hole can be fitted onto the outside of the positioning shaft, avoiding the positioning shaft structure and not interfering with the normal compression detection stroke of the spring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, a flip-up positioning shaft is used to achieve coaxial positioning of the spring, which can quickly install and remove the spring and prevent it from shifting and popping out during compression. At the same time, the shaft hole in the upper pressure block can completely avoid the positioning shaft, without restricting the free compression stroke of the spring, thereby ensuring the accuracy of the spring force detection data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the disassembled structure of the positioning seat, mounting block, and positioning shaft of this utility model;

[0018] Figure 3 This is a schematic diagram of the first state of the mounting block and positioning shaft of this utility model;

[0019] Figure 4 This is a schematic diagram of the second state of the mounting block and positioning shaft of this utility model;

[0020] Figure 5 This is a schematic diagram of the upper pressure table structure of this utility model.

[0021] In the diagram: 1. Base; 2. Stand; 3. Digital push-pull force gauge; 4. Lead screw; 5. Scale; 6. Digital display head; 7. Loading rod; 8. External sensor; 9. Upper pressure table; 10. Upper pressure block; 11. Connecting seat; 12. Support arm; 13. Positioning seat; 14. Mounting block; 15. Positioning shaft; 16. Handwheel; 17. Countersunk groove; 18. Stud; 19. Shaft seat; 20. Positioning block; 21. Waist-shaped countersunk hole; 22. Rotating shaft; 23. Connecting block; 24. Positioning groove. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-5As shown, this utility model provides a spring processing force testing fixture, including a base 1, a support frame 2 fixedly connected to the base 1, a digital display push-pull force gauge 3 fixedly connected to the base 1 near the support frame 2, a lead screw 4 vertically rotatably connected inside the support frame 2, a scale 5 vertically fixedly connected to one side of the support frame 2, a digital display head 6 slidably connected to the scale 5, a loading rod 7 slidably connected inside the support frame 2, and the middle position of the loading rod 7 threadedly connected to the lead screw 4, one side of the digital display head 6 connected to the loading rod 7, and the front side of the loading rod 7 fixed. An external sensor 8 is connected, and the external sensor 8 is electrically connected to the digital push-pull force gauge 3 via a wire. The lower end of the external sensor 8 is provided with an upper pressure platform 9, which includes an upper pressure block 10 and a connecting seat 11. The upper pressure block 10 and the connecting seat 11 are connected by multiple support arms 12. The connecting seat 11 is fixedly connected to the lower end of the external sensor 8. A positioning seat 13 is fixedly connected to the base 1 at a position coaxial with the upper pressure platform 9. A mounting block 14 is detachably connected to the positioning seat 13, and a positioning shaft 15 is movably connected to the mounting block 14.

[0024] like Figure 1 As shown, a handwheel 16 is fixedly connected to the upper end of the lead screw 4, which extends to the position above the upright frame 2. Manually turning the handwheel 16 can drive the lead screw 4 to rotate, thereby controlling the vertical lifting and lowering movement of the loading rod 7 through threaded transmission.

[0025] like Figures 2-4 As shown, a recess 17 is provided at the center of the mounting block 14. The recess 17 is used to accommodate the stud 18 for assembly and installation, providing an installation structure for the detachable fixing of the mounting block 14 and the positioning seat 13. The lower end of the mounting block 14 is fixedly connected to the stud 18, which is threaded into the recess 17. Two bearing seats 19 are symmetrically fixedly connected to the mounting block 14. The bearing seats 19 have oblong countersunk holes 21. A rotating shaft 22 is transversely inserted between the two oblong countersunk holes 21. By placing a rotating shaft 22 between the two bearing seats 19, a positioning shaft 15 and the mounting block 14 can be connected. The connection provides the conditions for the shaft seat 19 to be fixedly connected to the positioning block 20. One end of the positioning shaft 15 is fixedly connected to the connecting block 23. The positioning shaft 15 located on both sides of the connecting block 23 is provided with positioning grooves 24 that are adapted to the positioning block 20. The connecting block 23 is rotatably connected to the rotating shaft 22. The positioning shaft 15 can be rotated and opened by ninety degrees around the rotating shaft 22 through the connecting block 23, which facilitates the quick loading and unloading of the spring to be tested on the positioning shaft 15. At the same time, the spring is sleeved on the outside of the positioning shaft 15, which can prevent the spring from being deformed by pressure and thus avoid accidental pop-out during the testing process.

[0026] like Figure 5 As shown, the upper pressure block 10 has a through hole in the middle with a diameter larger than the outer diameter of the positioning shaft 15. When the upper pressure block 10 moves down with the loading rod 7 to apply a compressive load to the spring, its internal shaft hole can be fitted onto the outside of the positioning shaft 15, avoiding the structure of the positioning shaft 15 and not interfering with the normal compression detection stroke of the spring.

[0027] It should be noted that this utility model is a spring processing elasticity testing fixture. When performing spring elasticity testing, the operator first places the spring to be tested on the outside of the positioning shaft 15. The positioning shaft 15 is rotated 90 degrees around the rotating shaft 22 through the connecting block 23, so that the positioning shaft 15 is adjusted from a vertical posture to a horizontal posture (in order to facilitate the compression of the spring, the preset position of the loading rod 7 will be close to the upper end of the spring). Then, the spring is placed on the positioning shaft 15. After the spring is placed, the positioning shaft 15 is rotated upward to the vertical working position and the positioning shaft 15 is pushed down by hand. At this time, the positioning grooves 24 on both sides of the positioning shaft 15 cooperate with the positioning blocks 20 fixed on the shaft seat 19 to keep the positioning shaft 15 in a vertical and stable state.

[0028] After the spring is installed, the operator manually turns the handwheel 16, which drives the lead screw 4 to rotate. This, in turn, controls the loading rod 7 to slide vertically downwards along the inside of the stand 2 via a threaded transmission. As the loading rod 7 moves downwards, it simultaneously drives the connected digital display head 6 to slide down the scale 5, displaying the current compression displacement in real time. The external sensor 8 fixed to the front of the loading rod 7 also moves downwards. As the loading rod 7 continues to move downwards, the upper pressure block 10 gradually contacts and compresses the spring under test. During the downward pressing process of the upper pressure block 10, the upper pressure... The shaft hole in the middle of block 10 has a larger diameter than the outer diameter of the positioning shaft 15, so the shaft hole can be completely fitted outside the positioning shaft 15, thus avoiding the structure of the positioning shaft 15 and not causing any interference or restriction to the free compression stroke of the spring. The elastic force generated by the spring during compression is transmitted to the external sensor 8 through the upper pressure block 10, the support arm 12, and the connecting seat 11. The external sensor 8 transmits the detected elastic force signal to the digital push-pull force gauge 3 in real time through the wire, and the digital push-pull force gauge 3 then displays the corresponding elastic force value.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spring processing elasticity testing fixture, characterized in that: Includes a base (1), on which a stand (2) is fixedly connected. A digital push-pull force gauge (3) is fixedly connected to one side of the base (1) near the stand (2). A lead screw (4) is vertically rotatably connected inside the stand (2). A scale (5) is vertically fixedly connected to one side of the stand (2). A digital display head (6) is slidably connected to the scale (5). A loading rod (7) is slidably connected inside the stand (2). The middle part of the loading rod (7) is threadedly connected to the lead screw (4). One side of the digital display head (6) is connected to the loading rod (7). An external sensor (8) is fixedly connected to the front side of the loading rod (7). The external sensor (8) is electrically connected to the digital push-pull force gauge (3) through a wire. The lower end of the external sensor (8) is provided with an upper pressure platform (9). The upper pressure platform (9) includes an upper pressure block (10) and a connecting seat (11). The upper pressure block (10) and the connecting seat (11) are connected by multiple support arms (12). The connecting seat (11) is fixedly connected to the lower end of the external sensor (8). A positioning seat (13) is fixedly connected to the base (1) at a position coaxial with the upper pressure table (9). A mounting block (14) is detachably connected to the positioning seat (13), and a positioning shaft (15) is movably connected to the mounting block (14).

2. The spring force detection fixture according to claim 1, characterized in that: The upper end of the lead screw (4) extends to the position above the upright frame (2) and is fixedly connected to a handwheel (16).

3. The spring force detection fixture according to claim 1, characterized in that: A recess (17) is provided at the center of the mounting block (14).

4. The spring processing elasticity testing fixture according to claim 3, characterized in that: The lower end of the mounting block (14) is fixedly connected to a stud (18), which is threaded into the groove (17). Two bearing seats (19) are symmetrically fixedly connected on the mounting block (14). The bearing seats (19) are provided with waist-shaped countersunk holes (21), and a rotating shaft (22) is transversely inserted between the two waist-shaped countersunk holes (21).

5. The spring force detection fixture according to claim 4, characterized in that: A positioning block (20) is fixedly connected to the bearing seat (19).

6. The spring force detection fixture according to claim 5, characterized in that: One end of the positioning shaft (15) is fixedly connected to a connecting block (23). The positioning shaft (15) located on both sides of the connecting block (23) is provided with a positioning groove (24) that is compatible with the positioning block (20). The connecting block (23) is rotatably connected to the rotating shaft (22).

7. The spring force detection fixture according to claim 1, characterized in that: The upper pressure block (10) has a through hole in the middle with a diameter larger than the outer diameter of the positioning shaft (15).

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