A ball press

Abstract

This utility model discloses a ball pressure testing apparatus, including a support mechanism and a load mechanism. The support mechanism includes a support and a test hole on one side of the top of the support. The load mechanism includes a load body placed on the top of the support, a bearing steel ball fixedly installed at the bottom of the load body, a fixed screw threaded to the top of the load body, a connecting rod movably inserted into the middle of the load body, bolts threaded to both ends of the connecting rod, a fixed weight movably sleeved at the end of the connecting rod, a counterweight groove on the fixed weight, and a counterweight inserted into the counterweight groove. In this utility model, by creating a counterweight groove on the fixed weight and equipping it with a counterweight, when weight needs to be increased, the counterweight can be inserted into the counterweight groove to increase the weight without removing the bolts and replacing the fixed weight with one of different weights. Simultaneously, the level indicator, in conjunction with the turntable, keeps the center of gravity of the load mechanism on the bearing steel ball, thus ensuring the accuracy of the test.

Description

Technical Field

[0001] This utility model relates to the technical field of ball pressure testing instruments, specifically a ball pressure testing instrument. Background Technology

[0002] Ball compression testing is one of the methods recommended by the International Organization for Standardization in the field of electrical safety for determining the hardness of plastics and the heat resistance of non-metallic materials. During the test, a ball compression tester of a certain mass is used to press into the surface of non-metallic or non-ceramic materials at a certain temperature and time according to the conditions specified in the standard to test the heat resistance of the structural materials of power tools, so as to ensure that the sample has sufficient support strength under high-temperature working conditions and does not cause electrical safety hazards. However, existing testing devices require the bolts to be disassembled before changing weights of different weights, which is very troublesome. Moreover, long-term disassembly and assembly will lead to bolt wear. Therefore, a ball compression tester is proposed. Utility Model Content

[0003] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the technical solution adopted by this utility model is as follows:

[0005] A ball pressure testing apparatus includes a support mechanism and a load mechanism. The support mechanism includes a support and a test hole on one side of the top of the support. The load mechanism includes a load body placed on the top of the support, a bearing steel ball fixedly installed at the bottom of the load body, a fixed screw threaded to the top of the load body, a connecting rod movably inserted into the middle of the load body, bolts threaded to both ends of the connecting rod, a fixed weight movably sleeved on the end of the connecting rod, a counterweight groove opened on the fixed weight, and a counterweight inserted into the counterweight groove.

[0006] Preferably, a level is provided on one side of the top of the load body, and a turntable is rotatably engaged at the middle of the load body below the connecting rod. A gear is fixedly sleeved at the bottom of the turntable, and a toothed groove is provided at the position where the connecting rod contacts the gear, and the gear meshes with the toothed groove.

[0007] Preferably, the number of counterweight grooves is two sets of twelve, and the aperture of the counterweight groove is equal to the outer diameter of the counterweight.

[0008] Preferably, an indicator groove is provided on the side of the fixed weight at a position corresponding to the counterweight groove, the inside of the indicator groove is engraved with the number "0", and the side of the counterweight is engraved with the number "1" at the position corresponding to the indicator groove.

[0009] Preferably, the diameter of the bearing steel ball is 5mm ± 0.05mm.

[0010] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0011] In this invention, by opening a counterweight groove on the fixed weight and equipping it with a counterweight, when it is necessary to increase the weight, the counterweight can be inserted into the counterweight groove to increase the weight without disassembling the bolts to replace the fixed weight with a different weight. At the same time, the level instrument and turntable can keep the center of gravity of the load mechanism on the bearing steel ball, thereby ensuring the accuracy of the test. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0013] Figure 2 This is a cross-sectional schematic diagram of the load body according to an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of a fixed weight according to an embodiment of the present invention.

[0015] Figure label:

[0016] 110. Support; 120. Test hole;

[0017] 210. Load body; 211. Level; 212. Turntable; 213. Gear; 220. Bearing steel ball; 230. Fixing screw; 240. Connecting rod; 241. Gear groove; 250. Bolt; 260. Fixing weight; 261. Indicator groove; 270. Counterweight groove; 280. Counterweight. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0019] The following describes, with reference to the accompanying drawings, some embodiments of a ball pressure testing apparatus provided by this utility model.

[0020] Example:

[0021] Combination Figure 1-3As shown, the ball pressure testing instrument provided by this utility model includes a support mechanism and a load mechanism. The support mechanism includes a support 110 and a test hole 120 opened on one side of the top of the support 110. The load mechanism includes a load body 210 placed on the top of the support 110, a bearing steel ball 220 fixedly installed on the bottom of the load body 210, a fixing screw 230 threaded to the top of the load body 210, a connecting rod 240 movably inserted into the middle of the load body 210, bolts 250 threaded to both ends of the connecting rod 240, a fixed weight 260 movably sleeved on the end of the connecting rod 240, a counterweight groove 270 opened on the fixed weight 260, and a counterweight 280 inserted into the counterweight groove 270. A level 211 is provided, and a turntable 212 is rotatably engaged at the middle of the load body 210 below the connecting rod 240. A gear 213 is fixedly sleeved at the bottom of the turntable 212. A toothed groove 241 is provided at the contact position between the connecting rod 240 and the gear 213. The gear 213 meshes with the toothed groove 241. The diameter of the bearing steel ball 220 is 5mm ± 0.05mm. There are two sets of twelve counterweight grooves 270, and the diameter of the counterweight groove 270 is equal to the outer diameter of the counterweight 280. An indicator groove 261 is provided on the side of the fixed weight 260 at the position corresponding to the counterweight groove 270. The number "0" is engraved inside the indicator groove 261, and the number "1" is engraved on the side of the counterweight 280 at the position corresponding to the indicator groove 261.

[0022] Specifically, by marking the number "0" at the bottom of the indicator slot 261, it can be indicated that no weight has been added when the counterweight 280 is not inserted. When the counterweight 280 is inserted, the number "0" is covered, and the number "1" on the counterweight 280 is displayed, which means that the weight has increased by one unit. This makes it easier to balance the two sides and improves the practicality of the device.

[0023] Meanwhile, by using gear 213 to mesh with tooth groove 241, slight adjustments can be made when the center of gravity shifts, ensuring the accuracy of the test.

[0024] The working principle and usage process of this utility model are as follows: First, place the sample to be tested on the top of the support 110. Then, according to the required weight, insert the corresponding number of counterweights 280 symmetrically into the counterweight groove 270 to ensure balance on both sides. Then, place the bearing steel ball 220 on the sample. Next, put the whole thing into the constant temperature cabinet and connect the thermometer to the test hole 120. Finally, close the cabinet door, set the temperature, and conduct the test.

[0025] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A ball pressure testing apparatus, characterized in that, include: Support structure and load-bearing structure; The support mechanism includes a support (110) and a test hole (120) opened on one side of the top of the support (110); The load mechanism includes a load body (210) placed at the top of the support (110), a bearing steel ball (220) fixedly installed at the bottom of the load body (210), a fixed screw (230) threaded to the top of the load body (210), a connecting rod (240) movably inserted into the middle of the load body (210), bolts (250) threaded to both ends of the connecting rod (240), a fixed weight (260) movably sleeved at the end of the connecting rod (240), a counterweight groove (270) opened on the fixed weight (260), and a counterweight (280) inserted into the counterweight groove (270).

2. The ball pressure testing apparatus according to claim 1, characterized in that, A level (211) is provided on one side of the top of the load body (210), and a turntable (212) is rotatably engaged in the middle of the load body (210) below the connecting rod (240). A gear (213) is fixedly sleeved at the bottom of the turntable (212). A tooth groove (241) is provided at the position where the connecting rod (240) contacts the gear (213), and the gear (213) meshes with the tooth groove (241).

3. The ball pressure testing apparatus according to claim 1, characterized in that, The number of counterweight grooves (270) is two sets of twelve, and the aperture of the counterweight grooves (270) is equal to the outer diameter of the counterweight (280).

4. The ball pressure testing apparatus according to claim 1, characterized in that, The fixed weight (260) has an indicator groove (261) on its side corresponding to the counterweight groove (270). The indicator groove (261) is engraved with the number "0", and the counterweight (280) has the number "1" engraved on its side corresponding to the position of the indicator groove (261).

5. A ball pressure testing apparatus according to claim 1, characterized in that, The diameter of the bearing steel ball (220) is 5mm ± 0.05mm.

Images