Measuring device for pull-out force of ammunition chain

Abstract

The utility model discloses a measuring device for the pulling force of an ammunition chain, which can accurately detect the actually measured value of the pulling force of the ammunition chain. Comprising a pull and push dynamometer testing machine table and a pull force measuring positioning block, a pull and push dynamometer is installed at the upper end of the pull and push dynamometer testing machine table, a pull and push dynamometer connecting rod is installed at the measuring end of the pull and push dynamometer, and the pull and push dynamometer connecting rod is in threaded fit with a pull force measuring pressing nut and a pull force measuring step connecting block; the lower end of the push-pull dynamometer testing machine is provided with an upper ammunition chain positioning plate and a lower ammunition chain positioning plate, the two positioning sleeves can limit the upper limit position of the upper ammunition chain positioning plate, and the upper ammunition chain positioning plate and the lower ammunition chain positioning plate are respectively provided with an arc surface for avoiding an ammunition shape; the upper end and the lower end of the tension measuring positioning block are respectively provided with a connecting clip, the connecting clip at the upper end of the tension measuring positioning block is embedded into the clamping space to be fixed, and the connecting clip at the lower end of the tension measuring positioning block is used for being embedded into an elastic tail ring groove to be positioned.

Description

Technical Field

[0001] This utility model relates to the field of firearm measurement technology, and in particular to a device for measuring the force of a bullet belt pull. Background Technology

[0002] The pull force of an ammunition belt refers to the force required to pull a bullet out of the belt. If the pull force is too high, the bullet will not easily detach from the belt and cannot be chambered for firing; if the pull force is too low, the bullet will detach from the belt before firing, causing a feeding malfunction. Therefore, the deviation in pull force must be closely monitored throughout the entire ammunition belt manufacturing process. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for measuring the pulling force of a spring chain, which can accurately detect the measured value of the pulling force of the spring chain.

[0004] The purpose of this utility model is achieved as follows:

[0005] A device for measuring the pull-out force of a spring chain includes a push-pull force gauge testing platform. The platform is C-shaped, and its upper end is adjustable for height.

[0006] A push-pull force gauge is installed on the upper end of the push-pull force gauge testing machine. A push-pull force gauge connecting rod is installed on the measuring end of the push-pull force gauge. A tension force measuring clamping nut and a tension force measuring step connecting block are threaded together from top to bottom on the push-pull force gauge connecting rod. A clamping space is formed between the step surfaces of the tension force measuring clamping nut and the tension force measuring step connecting block.

[0007] The lower end of the push-pull force gauge testing machine is equipped with a base plate, on which two positioning sleeves are erected. An upper positioning plate and a lower positioning plate of the spring chain are positioned and connected between the two positioning sleeves. The upper and lower positioning plates of the spring chain can slide vertically. There is a spring chain locking space between the upper and lower positioning plates of the spring chain. The two positioning sleeves can limit the upper limit position of the upper positioning plate of the spring chain. The upper and lower positioning plates of the spring chain are respectively provided with arc surfaces, which are used to make way for the spring shape on the spring chain.

[0008] It also includes a tension measuring positioning block, with connecting clips at its upper and lower ends. The upper connecting clip of the tension measuring positioning block is embedded in the clamping space for fixation, and the lower connecting clip of the tension measuring positioning block is used to embed into the tail ring groove of the elastic shape for positioning. The upper end of the push-pull force gauge testing machine is used to pull out the elastic shape on the elastic chain.

[0009] Preferably, the upper end of the push-pull force gauge testing machine is adjusted for height via a handle.

[0010] Preferably, the push-pull force gauge is a pointer-type push-pull force gauge.

[0011] Preferably, it also includes a push-pull force gauge connecting rod nut, wherein the upper end of the push-pull force gauge connecting rod is threadedly engaged with the lower end of the push-pull force gauge connecting rod nut, and the upper end of the push-pull force gauge connecting rod nut is threadedly engaged with the measuring end of the push-pull force gauge.

[0012] Preferably, each positioning sleeve is tightened and fixed to the base plate by bolts and nuts. The bolts pass through the upper positioning plate and the lower positioning plate of the spring chain. The base plate is inverted U-shaped, and the internal space of the base plate is used to accommodate the bolts and nuts.

[0013] Preferably, the connecting clips at both the upper and lower ends of the tension measuring positioning block are double-arm hook-shaped.

[0014] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0015] 1. This utility model, by setting a push-pull force gauge, can accurately detect the actual spring pull force value of the spring chain, which is fast, efficient and low-intensity.

[0016] 2. When testing the pull-out force of different spring chains, simply replace the step connecting block and the spring chain positioning plate to adapt to different specifications of spring chains and spring shapes.

[0017] 3. The measuring device of this utility model is small and convenient, easy to detect, more intuitive to detect, accurate and reliable in positioning, easy to adjust, and simple and safe to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is the front view of the push-pull force gauge connecting rod nut;

[0020] Figure 3 This is the front view of the push-pull force gauge linkage;

[0021] Figure 4 These are the front and top views of the tension-measuring step connecting block;

[0022] Figure 5 These are the front and left views of the tension-measuring nut.

[0023] Figure 6 These are the front and top views of the tension measuring positioning block;

[0024] Figure 7 These are the front and top views of the positioning plate on the ammunition belt;

[0025] Figure 8 These are the front view and top view of the positioning plate under the belt conveyor;

[0026] Figure 9 These are the front view and top view of the base plate.

[0027] Figure 10 This is a cross-sectional view of the positioning sleeve. Detailed Implementation

[0028] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0029] In the attached diagram, 1 is the test platform for the push-pull force gauge, 2 is the key, 3 is the push-pull force gauge, 4 is the spring chain, 5 is the spring shape, 6 is the nut for the push-pull force gauge connecting rod, 7 is the connecting rod for the push-pull force gauge, 8 is the connecting block for the tension measuring step, 9 is the tension measuring clamping nut, 10 is the tension measuring positioning block, 11 is the bolt, 12 is the nut, 13 is the upper positioning plate of the spring chain, 14 is the lower positioning plate of the spring chain, 15 is the base plate, 16 is the screw, and 17 is the positioning sleeve.

[0030] A device for measuring the pull-out force of a spring chain includes a push-pull force gauge testing platform and a tension measuring positioning block. The push-pull force gauge testing platform is C-shaped, and its upper end is adjustable via a handle. A push-pull force gauge, specifically a pointer-type push-pull force gauge, is installed on the upper end of the platform. A push-pull force gauge connecting rod is installed at the measuring end of the force gauge. A tension measuring clamping nut and a tension measuring step connecting block are threaded onto the connecting rod from top to bottom, forming a clamping space between their stepped surfaces. The device also includes a push-pull force gauge connecting rod nut, with the upper end of the connecting rod threadedly engaged with the lower end of the nut, and the upper end of the nut threadedly engaged with the measuring end of the force gauge.

[0031] The lower end of the push-pull force gauge testing machine is equipped with a base plate, on which two positioning sleeves are erected. An upper positioning plate and a lower positioning plate of the spring chain are positioned and connected between the two positioning sleeves. The upper and lower positioning plates of the spring chain can slide vertically. There is a spring chain locking space between the upper and lower positioning plates of the spring chain. The two positioning sleeves can limit the upper limit position of the upper positioning plate of the spring chain. The upper and lower positioning plates of the spring chain are respectively provided with arc surfaces, which are used to make way for the spring shape on the spring chain.

[0032] The tension measuring positioning block has connecting clips at its upper and lower ends. The upper connecting clip is embedded in the clamping space for fixation, while the lower connecting clip is used to position the tail step groove of the spring. The upper end of the push-pull force gauge testing platform is used to pull out the spring on the spring chain. Both the upper and lower connecting clips of the tension measuring positioning block are double-arm hook-shaped, and the facing surfaces of the clips can be correspondingly provided with ring grooves for positioning.

[0033] Each set of positioning sleeves includes three positioning sleeves, and the three positioning sleeves form a positioning clamping space between the upper positioning plate and the lower positioning plate of the spring chain. Each set of positioning sleeves is tightened and fixed to the base plate body by bolts and nuts. The bolts pass through the upper positioning plate and the lower positioning plate of the spring chain. The base plate body is inverted U-shaped, and the internal space of the base plate body is used to make way for the bolts and nuts.

[0034] The base plate and the push-pull force gauge testing platform are connected by keys and screws. Before measurement, the lower positioning plate of the spring chain is inserted into the positioning sleeve and placed on the upper surface of the base plate; the upper positioning plate of the spring chain is inserted into the positioning sleeve and placed on the upper surface of the lower positioning plate of the spring chain. The position of the upper positioning plate of the spring chain is defined by setting a step at the top of the positioning sleeve, or by defining the position of the upper positioning plate of the spring chain by the nut of the bolt.

[0035] The lower positioning plate of the ammunition belt is provided with a semi-circular stepped groove, which is used to position the corresponding outer part of the magazine.

[0036] The following steps are included in testing the pull-out force of the belt using a measuring device:

[0037] S1. Manually press the bullet (i.e., the bullet) into the ammunition belt;

[0038] S2. Position the spring chain on the semi-circular stepped groove of the lower positioning plate of the spring chain, and adapt the upper positioning plate and the lower positioning plate of the spring chain to their respective positions by sliding them.

[0039] S3. Place one end of the tension measuring positioning block into the elastic tail and the other end into the tension measuring connecting block, and adapt the position by sliding the upper positioning plate and the lower positioning plate of the elastic chain.

[0040] S4. Adjust the tension measuring clamping nut to tighten the tension measuring step connecting block and the tension measuring positioning block;

[0041] S5. The push-pull force gauge reading is reset to zero;

[0042] S6. Rotate the handle of the push-pull force gauge tester and pull the spring upward;

[0043] S7. The spring is disengaged from the chain under the action of force. The actual value of the pull-out force is the reading of the tension gauge.

[0044] S8. Loosen the tension measuring nut and remove the tension measuring step connecting block;

[0045] S9. Remove the spring belt from the measuring device.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A belt puller measuring device, comprising a push-pull force meter test bench, the push-pull force meter test bench is C-shaped, the upper end of the push-pull force meter test bench can be adjusted up and down, characterized in that: the upper end of the push-pull force meter test bench is provided with a push-pull force meter, the measuring end of the push-pull force meter is provided with a push-pull force meter connecting rod, the push-pull force meter connecting rod is sequentially screwed with a pull force measuring compression nut and a pull force measuring stepped connecting block from top to bottom, and a clamping space is formed between the stepped surfaces of the pull force measuring compression nut and the pull force measuring stepped connecting block; the lower end of the push-pull force meter test bench is provided with a bottom plate seat body, two positioning sleeves are vertically arranged on the bottom plate seat body, and a belt upper positioning plate and a belt lower positioning plate are positioned and connected between the two positioning sleeves; the belt upper positioning plate and the belt lower positioning plate can vertically slide, the space between the belt upper positioning plate and the belt lower positioning plate is a belt clamping space, the two positioning sleeves can limit the upper limit position of the belt upper positioning plate, and arc surfaces are respectively arranged on the belt upper positioning plate and the belt lower positioning plate, wherein the arc surfaces are used for giving way to the bullets on the belt; further comprising a pull force measuring positioning block, the upper and lower ends of the pull force measuring positioning block are respectively provided with connecting clips, the upper end connecting clip of the pull force measuring positioning block is embedded in the clamping space for fixation, and the lower end connecting clip of the pull force measuring positioning block is used for embedding the tail ring groove of the bullet for positioning, and the upper end of the push-pull force meter test bench is used for pulling out the bullets on the belt. The upper end of the push-pull force meter test bench is adjusted up and down through a handle. The push-pull force meter is a pointer type push-pull force meter. Further comprising a push-pull force meter connecting rod nut, the upper end of the push-pull force meter connecting rod is threadedly fixed with the lower end of the push-pull force meter connecting rod nut, and the upper end of the push-pull force meter connecting rod nut is threadedly fixed with the measuring end of the push-pull force meter.

2. The measuring device of belt link extraction force according to claim 1, characterized in that: Each positioning sleeve is fixed on the bottom plate seat body through a bolt and a nut, the bolt passes through the belt upper positioning plate and the belt lower positioning plate, the bottom plate seat body is inverted U-shaped, and the internal space of the bottom plate seat body is used for giving way to the bolt and the nut.

3. The measuring device of belt link extraction force according to claim 1, characterized in that: The connecting clips at the upper and lower ends of the pull force measuring positioning block are both double-arm hook-shaped.

4. The measuring device of belt extraction force according to claim 3, characterized in that: ​ 5. The measuring device of belt link extraction force according to claim 1, characterized in that: ​ 6. The measuring device of belt link extraction force according to claim 1, characterized in that: ​

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