Efficient and reliable electric screwdriver testing device

Abstract

The utility model provides an efficient and reliable electric screwdriver testing device. The efficient and reliable electric screwdriver testing device comprises a bearing plate, an electric screwdriver fixing assembly, a torsion testing assembly and a testing controller. The torsion testing assembly comprises a control valve, a transition valve block, a testing cylinder body, a piston, a return elastic piece, a testing nut and a testing screw. The test cylinder body is provided with an upper accommodating groove. A sealing cavity is formed in the upper containing groove between the testing cylinder body and the piston, and hydraulic oil is arranged in the sealing cavity. The return elastic piece is arranged between the test cylinder body and the piston in a compressed mode. The transition valve block is provided with an oil tank, and the oil tank and the sealing cavity communicate with the control valve. When the electric screwdriver drives the testing screw to move downwards, the testing screw drives the piston to move downwards, and meanwhile the oil tank is disconnected with the sealing cavity through the control valve. When the electric screwdriver drives the test screw to move upwards, the oil tank is communicated with the sealing cavity through the control valve, and the return elastic piece enables the piston to move upwards. The high-efficiency and reliable electric screwdriver testing device provided by the utility model can realize high-efficiency and reliable locking experiments of the electric screwdriver.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to an efficient and reliable electric batch testing device. Background Art

[0002] Based on the current market, smart locking has a dominant position in the screw connection assembly method in 3C, hardware, automobile and other industries. In the locking process, there are requirements such as torque value, slipping, floating height, torque overshoot, etc. that need to be fed back to the control system for processing. The practice and use of existing technologies have very mature theoretical and empirical support, but for processing and manufacturing, there are certain uncertain factors such as tolerances. The newly produced electric batches must be tested and aged, and the actual data obtained must be compared with the theoretical data to ensure that each product is a qualified high-quality product in the hands of customers. Based on the test needs, a product needs to be continuously locked and loosened back and forth. Generally, it takes 3 to 24 hours of unmanned testing and aging. During the test, there is a certain probability that the screw cannot be loosened under the theoretical value after the last step of locking, and the loosening torque cannot be predicted (related to the torque borne by the screw, long-term use of material fatigue and other factors). It is difficult to guarantee 100% loosening, which leads to the experiment being stopped midway, which will reduce efficiency. At the same time, professional technicians must be arranged to track the whole process. There are currently no products and technologies on the market to solve such problems.

[0003] Therefore, it is necessary to provide an efficient and reliable electric batch testing device to solve the above technical problems. Utility Model Content

[0004] The utility model provides an efficient and reliable electric screwdriver testing device, which can realize an efficient and reliable locking experiment of the electric screwdriver.

[0005] The technical solution of the utility model is:

[0006] An efficient and reliable electric batch test device, used to test the performance of the electric batch, comprising:

[0007] a carrier plate, which is placed horizontally;

[0008] The electric screwdriver fixing assembly comprises a support frame, a linear slide rail and an electric screwdriver clamping assembly; the support frame is arranged vertically; the track of the linear slide rail is connected to the support frame and arranged vertically; the electric screwdriver clamping assembly is connected to the slider of the linear slide rail, and the electric screwdriver clamping assembly is used to clamp the electric screwdriver;

[0009] A torque test assembly, which includes a control valve, a transition valve block, a test cylinder, a piston, a return elastic member, a test nut and a test screw; the test cylinder is located below the electric screwdriver clamping assembly, the bottom of the test cylinder is connected to the bearing plate, the test cylinder is provided with an upper receiving groove and a cylinder through groove, the upper receiving groove is located at the top of the test cylinder, and the cylinder through groove passes through the bottom wall of the upper receiving groove and the bottom surface of the test cylinder; the piston includes a plug body and an extension part, the plug body is movably arranged in the upper receiving groove, and the periphery of the plug body is sealed and connected to the side wall of the upper receiving groove, the extension part protrudes from the bottom of the plug body, the extension part is movably arranged in the cylinder through groove, and the periphery of the extension part is sealed and connected to the side wall of the cylinder through groove, and the test cylinder and the piston are connected in the upper receiving groove. A sealing chamber is formed in the piston, and hydraulic oil is arranged in the sealing chamber. The piston is provided with a plug-through groove, and the plug-through groove passes through the plug body and the extension part; the return elastic member is compressed and arranged between the test cylinder body and the plug body, and the return elastic member is used to provide elastic force to make the plug body move upward; the bottom of the test nut is connected to the bearing plate, and the top of the test nut is arranged in the plug-through groove; the test screw includes a nut and a threaded rod, the threaded rod is rotatably arranged in the plug-through groove and is threadedly connected with the test nut, the nut is connected to the top of the threaded rod, and the periphery of the nut protrudes from the threaded rod; the transition valve block is provided with an oil tank, and the oil tank and the sealing chamber are both connected to the control valve, and the control valve is used to control the connection or disconnection of the oil tank and the sealing chamber; and,

[0010] A test controller, which is electrically connected to the control valve and is used to be electrically connected to an electric batch;

[0011] When the electric screwdriver drives the nut to move toward the test nut, the nut drives the plug body to move downward, and at the same time the oil tank is disconnected from the sealing chamber through the control valve; when the electric screwdriver drives the nut to move away from the test nut, the oil tank is connected to the sealing chamber through the control valve.

[0012] In the efficient and reliable electric batch test device described in the utility model, the transition valve block is connected between the control valve and the test cylinder; the test cylinder is provided with a cylinder channel, which is located below the upper accommodating groove, one port of the cylinder channel is located on the bottom wall of the upper accommodating groove, and the other port is located on the side wall of the test cylinder close to the transition valve block; the control valve is provided with a first interface and a second interface on the side facing the transition valve block, and a control plate is provided in the control valve for controlling the connection or disconnection of the first interface and the second interface; the transition valve block is provided with a first valve block channel and a second valve block channel, one end of the first valve block channel and one end of the second valve block channel are both located on a side of the transition valve block close to the control valve, the other end of the first valve block channel is located on a side of the transition valve block close to the test cylinder, and the other end of the second valve block channel is located on the side wall of the oil tank, the first valve block channel connects the cylinder channel and the first interface, and the second valve block channel connects the second interface and the oil tank.

[0013] In the efficient and reliable electric batch testing device described in the utility model, the plug body is provided with a first positioning groove along its circumference, the side wall of the cylinder through groove is provided with a second positioning groove along its circumference, and the piston also includes a first sealing ring and a second sealing ring, the first sealing ring is arranged in the first positioning groove, and its peripheral edge is sealed and connected with the side wall of the upper accommodating groove, the second sealing ring is sleeved on the extension portion, and the second sealing ring is arranged in the second positioning groove.

[0014] In the efficient and reliable electric batch testing device described in the utility model, the torque testing assembly also includes a stop structure, which includes a stop ring and a fixing screw; the fixing screw is threadedly connected to the top of the test cylinder body, the stop ring is clamped between the top surface of the test cylinder body and the fixing screw, and the stop ring extends into the upper receiving groove and is located above the piston.

[0015] In the efficient and reliable electric batch testing device described in the utility model, the torque testing assembly also includes a pressure head, which is annular, and the bottom outer periphery of the pressure head is provided with an external clamping groove, the inner periphery of the plug body is arranged in the external clamping groove, and the top inner periphery of the pressure head is provided with an internal clamping groove, and the nut is arranged in the internal clamping groove.

[0016] In the efficient and reliable electric batch test device described in the utility model, the efficient and reliable electric batch test device also includes an alignment adjustment plate, the alignment adjustment plate is arranged above the bearing plate, the alignment adjustment plate is provided with a first long strip hole extending in the transverse direction for screws to pass through to connect the alignment adjustment plate and the bearing plate, the bottom of the test cylinder body and the bottom of the test nut are both connected to the alignment adjustment plate, and the transition valve block and the control valve are both connected to the test cylinder body.

[0017] In the efficient and reliable electric batch testing device described in the utility model, the upper surface of the carrying plate is provided with a transverse sliding groove, and the lower surface of the alignment adjustment plate is provided with a transverse sliding block, and the transverse sliding block can slide transversely in the transverse sliding groove.

[0018] In the efficient and reliable electric screwdriver testing device described in the utility model, the support frame includes a base plate and a vertical plate; the base plate is horizontally arranged and located above the supporting plate, and a second long strip hole extending in the longitudinal direction is provided on the base plate for screws to pass through to connect the base plate and the supporting plate; the vertical plate is connected to the base plate and is vertically arranged, and the electric screwdriver clamping assembly is vertically slidably connected to the vertical plate.

[0019] In the efficient and reliable electric batch testing device of the utility model, the upper surface of the carrying plate is provided with a longitudinal sliding groove, and the lower surface of the bottom plate is provided with a longitudinal sliding block, and the longitudinal sliding block can slide longitudinally in the longitudinal sliding groove.

[0020] In the efficient and reliable electric batch testing device described in the utility model, the bottom wall of the upper accommodating groove is provided with a first limiting groove, the bottom surface of the plug body is provided with a second limiting groove, and the return elastic member is configured as a compression spring, the lower end of which is located in the first limiting groove, and the upper end of which is located in the second limiting groove.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the utility model has the following efficient and reliable electric screwdriver testing device: before the test, the electric screwdriver is fixed on the electric screwdriver clamping assembly, and the electric screwdriver is connected to the test controller through a communication line; after starting, the electric screwdriver starts to screw the test screw into the test nut in sections according to the program, and moves downward along the support frame with the electric screwdriver clamping assembly; at the same time, the test controller controls the control valve to disconnect the oil tank from the sealing chamber through the control valve, and the hydraulic oil in the sealing chamber cannot flow into the oil tank; as the test screw is screwed in, the nut pushes the piston downward, and the volume of the sealing chamber is increased during this process. The test screw is reduced, so that the pressure in the sealing chamber rises, providing torque for the test screw, simulating the real working condition. As the torque rating of the electric screwdriver is reached, after the tightening work is completed, the test controller controls the control valve to make the oil tank communicate with the sealing chamber through the control valve, and the hydraulic oil in the sealing chamber flows to the oil tank. The volume of the sealing chamber becomes larger, and the pressure in the sealing chamber decreases. The torque of the test screw when tightening is close to 0. At this time, the test controller controls the electric screwdriver to reverse and move upward along the support frame with the electric screwdriver clamping assembly, so that the test screw can be easily screwed out. At the same time, the return elastic member makes the plug body move upward and reset. Repeat the above actions to complete the test and aging tasks of the electric screwdriver. The cooperation between the extension part and the cylinder groove can isolate the test nut from the hydraulic oil in the sealing chamber. When the test nut is replaced, the structure of the sealing chamber will not be destroyed, and the hydraulic oil is prevented from flowing into the cylinder groove. The efficient and reliable electric screw test device of the utility model adopts hydraulic pressure to store pressure to produce the torque of the test screw locking test. After the hydraulic pressure is released and the locking force is removed, it can be easily loosened, fundamentally realizing an efficient and reliable locking experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of an efficient and reliable electric batch testing device provided in a preferred embodiment of the present invention.

[0024] Figure 2 A schematic diagram of the exploded structure of a torque testing assembly of an efficient and reliable electric batch testing device provided in a preferred embodiment of the utility model.

[0025] Figure 3 A schematic cross-sectional structure diagram of a torque testing assembly of an efficient and reliable electric screw test device provided in a preferred embodiment of the utility model.

[0026] Figure 4 A schematic structural diagram of a control valve of an efficient and reliable electric batch test device provided in a preferred embodiment of the utility model.

[0027] Figure 5 A schematic diagram of the exploded structure of a transition valve block of an efficient and reliable electric batch test device provided in a preferred embodiment of the utility model.

[0028] Figure 6 A schematic cross-sectional structure diagram of a transition valve block of an efficient and reliable electric batch test device provided in a preferred embodiment of the utility model.

[0029] Figure 7 A schematic structural diagram of a test cylinder of an efficient and reliable electric batch test device provided in a preferred embodiment of the utility model.

[0030] Figure 8 A schematic diagram of the cross-sectional structure of a test cylinder of an efficient and reliable electric batch test device provided in a preferred embodiment of the utility model.

[0031] Fig. 9 A schematic structural diagram of a piston of an efficient and reliable electric batch testing device provided in a preferred embodiment of the utility model.

[0032] Fig.10 A schematic structural diagram of a pressure head of an efficient and reliable electric batch testing device provided in a preferred embodiment of the utility model.

[0033] Fig.11 A schematic structural diagram of a test nut of an efficient and reliable electric batch test device provided in a preferred embodiment of the utility model.

[0034] Fig.12 A schematic structural diagram of a carrier plate of an efficient and reliable electric batch testing device provided in a preferred embodiment of the utility model.

[0035] Fig.13 A schematic structural diagram of a support frame for an efficient and reliable electric batch testing device provided in a preferred embodiment of the utility model.

[0036] Fig.14 A schematic structural diagram of an alignment adjustment plate of an efficient and reliable electric batch testing device provided in a preferred embodiment of the utility model.

[0037] in,

[0038] 10. Electric screwdriver,

[0039] 11. Loading plate, 111. Horizontal sliding groove, 112. Vertical sliding groove,

[0040] 12. Electric screwdriver fixing components,

[0041] 121, support frame, 1211, bottom plate, 12111, second long hole, 12112, longitudinal sliding block, 1212, vertical plate,

[0042] 122. Electric screwdriver clamping assembly,

[0043] 123. Linear slides,

[0044] 13. Torque test assembly,

[0045] 131, control valve, 1311, first interface, 1312, second interface,

[0046] 132, transition valve block, 1321, oil tank, 1322, first valve block channel, 1323, second valve block channel,

[0047] 133, test cylinder, 1331, upper receiving groove, 13311, first limiting groove, 1332, cylinder through groove, 13321, second positioning groove, 1333, cylinder channel, 1334, lower receiving groove, 1335, sealing chamber,

[0048] 134, piston, 1341, plug body, 13411, first positioning groove, 13412, second limiting groove, 1342, extension part, 1343, plug penetration groove, 1344, first sealing ring, 1345, second sealing ring,

[0049] 135. Return elastic member,

[0050] 136, test nut, 1361, main rod, 1362, connecting block,

[0051] 137, test screw, 1371, nut, 1372, threaded rod,

[0052] 138, stop structure, 1381, stop ring, 1382, fixing screw,

[0053] 139, pressure head, 1391, external card slot, 1392, internal card slot,

[0054] 14. Test the controller.

[0055] 15. Alignment adjustment plate, 151. First long hole, 152. Horizontal sliding block.

[0056] In the figures, structurally similar elements are denoted by the same reference numerals. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0058] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0059] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Based on the current market, smart locking has a dominant position in the screw connection assembly method in 3C, hardware, automobile and other industries. In the locking process, there are requirements such as torque value, slipping, floating height, torque overshoot, etc. that need to be fed back to the control system for processing. The practice and use of existing technologies have very mature theoretical and empirical support, but for processing and manufacturing, there are certain uncertain factors such as tolerances. The newly produced electric batches must be tested and aged, and the actual data obtained must be compared with the theoretical data to ensure that each product is a qualified high-quality product in the hands of customers. Based on the test needs, a product needs to be continuously locked and loosened back and forth. Generally, it takes 3 to 24 hours of unmanned testing and aging. During the test, there is a certain probability that the screw cannot be loosened under the theoretical value after the last step of locking, and the loosening torque cannot be predicted (related to the torque borne by the screw, long-term use of material fatigue and other factors). It is difficult to guarantee 100% loosening, which leads to the experiment being stopped midway, which will reduce efficiency. At the same time, professional technicians must be arranged to track the whole process. There are currently no products and technologies on the market to solve such problems.

[0062] The following is a preferred embodiment of an efficient and reliable electric batch testing device provided by the utility model that can solve the above technical problems.

[0063] Please refer to Figure 1The preferred embodiment of the utility model provides an efficient and reliable electric screwdriver testing device for testing the performance of an electric screwdriver 10, which includes a load-bearing plate 11, an electric screwdriver fixing assembly 12, a torque testing assembly 13 and a testing controller 14. The load-bearing plate 11 is placed horizontally. The electric screwdriver fixing assembly 12 includes a support frame 121, a linear slide rail 123 and an electric screwdriver clamping assembly 122. The support frame 121 is arranged vertically. The track of the linear slide rail 123 is connected to the support frame 121 and is arranged vertically. The electric screwdriver clamping assembly 122 is connected to the slider of the linear slide rail 123, and the electric screwdriver clamping assembly 122 is used to clamp the electric screwdriver 10.

[0064] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 and Fig. 9The torque test assembly 13 includes a control valve 131, a transition valve block 132, a test cylinder 133, a piston 134, a return elastic member 135, a test nut 136 and a test screw 137. The test cylinder 133 is located below the electric screwdriver clamping assembly 122, the bottom of the test cylinder 133 is connected to the bearing plate 11, and the test cylinder 133 is provided with an upper receiving groove 1331 and a cylinder through groove 1332. The upper receiving groove 1331 is located at the top of the test cylinder 133, and the cylinder through groove 1332 runs through the bottom wall of the upper receiving groove 1331 and the bottom surface of the test cylinder 133. The piston 134 includes a plug body 1341 and an extension 1342. The plug body 1341 is movably disposed in the upper receiving groove 1331, and the periphery of the plug body 1341 is sealed and connected to the side wall of the upper receiving groove 1331. The extension 1342 protrudes from the bottom of the plug body 1341. The extension 1342 is movably disposed in the cylinder through groove 1332, and the periphery of the extension 1342 is sealed and connected to the side wall of the cylinder through groove 1332. A sealed cavity 1335 is formed in the upper receiving groove 1331 between the test cylinder 133 and the piston 134, and hydraulic oil is disposed in the sealed cavity 1335. The piston 134 is provided with a plug through groove 1343, and the plug through groove 1343 passes through the plug body 1341 and the extension 1342. The return elastic member 135 is compressed and disposed between the test cylinder 133 and the plug body 1341, and the return elastic member 135 is used to provide elastic force to make the plug body 1341 move upward. The bottom of the test nut 136 is connected to the bearing plate 11, and the top of the test nut 136 is arranged in the plug-through groove 1343. The test screw 137 includes a nut 1371 and a threaded rod 1372, the threaded rod 1372 is rotatably arranged in the plug-through groove 1343, and is threadedly connected with the test nut 136, the nut 1371 is connected to the top of the threaded rod 1372, and the periphery of the nut 1371 protrudes from the threaded rod 1372. The transition valve block 132 is provided with an oil tank 1321, and the oil tank 1321 and the sealing chamber 1335 are both connected to the control valve 131, and the control valve 131 is used to control the oil tank 1321 to be connected or disconnected with the sealing chamber 1335. The test controller 14 is electrically connected to the control valve 131, and is used to be electrically connected to the electric batch 10. The control valve 131 is a two-position three-way hydraulic reversing valve.

[0065] When the electric screwdriver 10 drives the nut 1371 to move toward the test nut 136, the nut 1371 drives the plug 1341 to move downward, and the oil tank 1321 is disconnected from the sealed chamber 1335 through the control valve 131. When the electric screwdriver 10 drives the nut 1371 to move away from the test nut 136, the oil tank 1321 is connected to the sealed chamber 1335 through the control valve 131.

[0066] The utility model discloses an efficient and reliable electric screwdriver testing device. Before the test, the electric screwdriver 10 is fixed on the electric screwdriver clamping assembly 122, and the electric screwdriver 10 is connected to the test controller 14 through a communication line. After starting, the electric screwdriver 10 starts to screw the test screw 137 into the test nut 136 in sections according to the program, and moves downward along the support frame 121 with the electric screwdriver clamping assembly 122. At the same time, the test controller 14 controls the control valve 131 to operate, so that the oil tank 1321 is disconnected from the sealing chamber 1335 through the control valve 131, and the hydraulic oil in the sealing chamber 1335 cannot flow into the oil tank 1321. As the test screw 137 is screwed in, the nut 1371 pushes the piston 134 downward. In this process, the volume of the sealing chamber 1335 is reduced, so that the sealing chamber 1335 is 5, the pressure inside the screw 137 rises, providing torque to the test screw 137, simulating the real working condition. As the torque rating of the electric screwdriver 10 is reached, after the tightening work is completed, the test controller 14 controls the control valve 131 to operate, so that the oil tank 1321 is connected to the sealed chamber 1335 through the control valve 131, and the hydraulic oil in the sealed chamber 1335 flows to the oil tank 1321, the volume of the sealed chamber 1335 increases, and the pressure inside the sealed chamber 1335 decreases. The torque of the test screw 137 when tightened is close to 0. At this time, the test controller 14 controls the electric screwdriver 10 to reverse, and moves upward along the support frame 121 with the electric screwdriver clamping assembly 122, so that the test screw 137 can be easily screwed out. At the same time, the return elastic member 135 causes the plug body 1341 to move upward and reset. Repeat the above actions to complete the test and aging tasks of the electric screwdriver 10. The cooperation between the extension part 1342 and the cylinder groove 1332 can isolate the test nut 136 from the hydraulic oil in the sealing chamber 1335. When the test nut 136 is replaced, the structure of the sealing chamber 1335 will not be damaged, and the hydraulic oil will not flow into the cylinder groove 1332. The efficient and reliable electric screw test device of the utility model uses hydraulic pressure to store pressure to produce the torque for the locking test of the test screw 137. After the hydraulic pressure is released, the locking force is removed and the screw can be easily loosened, thereby fundamentally realizing an efficient and reliable locking experiment.

[0067] Please refer to Figure 3 The sealed cavity 1335 is flat, and its diameter is greater than its thickness. A slight change in the thickness of the sealed cavity 1335 can produce a large pressure change, which is convenient for providing torque and improving test efficiency.

[0068] Please refer to Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 8, the transition valve block 132 is connected between the control valve 131 and the test cylinder 133. The test cylinder 133 is provided with a cylinder channel 1333, which is located below the upper receiving groove 1331, one port of the cylinder channel 1333 is located at the bottom wall of the upper receiving groove 1331, and the other port is located at the side wall of the test cylinder 133 close to the transition valve block 132. The control valve 131 is provided with a first interface 1311 and a second interface 1312 on one side facing the transition valve block 132, and a control plate is provided in the control valve 131 for controlling the connection or disconnection of the first interface 1311 and the second interface 1312. The transition valve block 132 is provided with a first valve block channel 1322 and a second valve block channel 1323, one end of the first valve block channel 1322 and one end of the second valve block channel 1323 are both located on a side of the transition valve block 132 close to the control valve 131, the other end of the first valve block channel 1322 is located on a side of the transition valve block 132 close to the test cylinder body 133, the other end of the second valve block channel 1323 is located on the side wall of the oil tank 1321, the first valve block channel 1322 connects the cylinder body channel 1333 and the first interface 1311, and the second valve block channel 1323 connects the second interface 1312 and the oil tank 1321. In the above structure, the cylinder channel 1333 is located below the upper accommodating groove 1331 and will not interfere with the up and down movement of the plug body 1341; one end of the first valve block channel 1322 is connected to the first interface 1311, one end of the second valve block channel 1323 is connected to the second interface 1312, and the other end of the cylinder channel 1333 is connected to the other end of the first valve block channel 1322, so that the structure among the control valve 131, the transition valve block 132 and the test cylinder 133 is compact.

[0069] Please refer to Figure 3 , Figure 8 and Fig. 9 The plug body 1341 is provided with a first positioning groove 13411 along its circumference, and the side wall of the cylinder through groove 1332 is provided with a second positioning groove 13321 along its circumference. The piston 134 also includes a first sealing ring 1344 and a second sealing ring 1345. The first sealing ring 1344 is provided in the first positioning groove 13411, and its periphery is sealed and connected with the side wall of the upper receiving groove 1331. The second sealing ring 1345 is sleeved on the extension part 1342, and the second sealing ring 1345 is provided in the second positioning groove 13321. By providing the first sealing ring 1344 and the second sealing ring 1345, the sealing performance of the sealing chamber 1335 can be improved. The first sealing ring 1344 can prevent the hydraulic oil in the sealing chamber 1335 from flowing out from the upper opening of the upper receiving groove 1331, and the second sealing ring 1345 can prevent the hydraulic oil in the sealing chamber 1335 from flowing out from the lower opening of the cylinder through groove 1332.

[0070] Please refer to Figure 1 , Figure 2 and Figure 3The torque test assembly 13 also includes a stopper structure 138, which includes a stopper ring 1381 and a fixing screw 1382. The fixing screw 1382 is threadedly connected to the top of the test cylinder 133, and the stopper ring 1381 is clamped between the top surface of the test cylinder 133 and the fixing screw 1382, and the stopper ring 1381 extends into the upper receiving groove 1331 and is located above the piston 134. During assembly, the piston 134 is first placed into the test cylinder 133, and then the stopper ring 1381 is fixed to the top surface of the test cylinder 133 by the fixing screw 1382. With the above structure, when the return elastic member 135 pushes the piston 134 to move upward, the stopper ring 1381 can limit the piston 134 to prevent the piston 134 from detaching from the test cylinder 133.

[0071] Please refer to Figure 2 and Fig.10 The torque test assembly 13 also includes a pressure head 139, which is annular. The outer peripheral edge of the bottom of the pressure head 139 is provided with an outer clamping groove 1391, the inner peripheral edge of the plug body 1341 is provided in the outer clamping groove 1391, and the inner peripheral edge of the top of the pressure head 139 is provided with an inner clamping groove 1392, and the nut 1371 is provided in the inner clamping groove 1392. Through the above structure, the pressure head 139 can be connected with the test screw 137, and the pressure head 139 can be connected with the piston 134. The downward movement of the test screw 137 drives the pressure head 139 to move downward, thereby driving the piston 134 to move downward. The pressure head 139 can isolate the test screw 137 and the piston 134 to prevent the test screw 137 from damaging the piston 134 during the downward movement. If the pressure head 139 is damaged, the pressure head 139 can be replaced separately, which is convenient to replace and has low cost.

[0072] Please refer to Fig.12 and Fig.14 , please also refer to Figure 1 The efficient and reliable electric batch test device also includes a positioning adjustment plate 15, which is arranged above the bearing plate 11. The positioning adjustment plate 15 is provided with a first long hole 151 extending in the transverse direction, so that the screw can pass through to connect the positioning adjustment plate 15 and the bearing plate 11. The bottom of the test cylinder 133 and the bottom of the test nut 136 are both connected to the positioning adjustment plate 15, and the transition valve block 132 and the control valve 131 are both connected to the test cylinder 133. When in use, the positioning adjustment plate 15 can be moved in the transverse direction, and the screw can pass through different positions of the first long hole 151, thereby changing the relative position of the positioning adjustment plate 15 and the bearing plate 11 in the transverse direction. When the position of the positioning adjustment plate 15 in the transverse direction changes, the positions of the transition valve block 132, the control valve 131, the test cylinder 133, the test nut 136 and the test screw 137 in the transverse direction are all changed accordingly, so that the test screw 137 can correspond to the position of the electric batch 10 in the transverse direction.

[0073] Please refer to Fig.12 and Fig.13 , please also refer to Figure 1 The support frame 121 includes a bottom plate 1211 and a vertical plate 1212. The bottom plate 1211 is horizontally arranged and located above the bearing plate 11. The bottom plate 1211 is provided with a second long hole 12111 extending in the longitudinal direction for screws to pass through and connect the bottom plate 1211 and the bearing plate 11. The vertical plate 1212 is connected to the bottom plate 1211 and arranged in the vertical direction. The electric screwdriver clamping assembly 122 is vertically slidably connected to the vertical plate 1212. When in use, the bottom plate 1211 can be moved in the longitudinal direction, and the screws can pass through different positions of the second long hole 12111, thereby changing the relative position of the bottom plate 1211 and the bearing plate 11 in the longitudinal direction. When the position of the bottom plate 1211 in the longitudinal direction changes, the position of the electric screwdriver 10 in the longitudinal direction also changes accordingly, so that the electric screwdriver 10 can correspond to the position of the test screw 137 in the longitudinal direction.

[0074] Please refer to Fig.12 , Fig.13 and Fig.14 , a transverse sliding groove 111 is provided on the upper surface of the carrying plate 11, and a transverse sliding block 152 is provided on the lower surface of the alignment adjustment plate 15. The transverse sliding block 152 can slide transversely in the transverse sliding groove 111. With the above structure, when it is necessary to adjust the position of the alignment adjustment plate 15 in the transverse direction, the transverse sliding block 152 can slide transversely in the transverse sliding groove 111, which can avoid the alignment adjustment plate 15 from being offset in the longitudinal direction during the movement, making the position adjustment of the alignment adjustment plate 15 more accurate and convenient. A longitudinal sliding groove 112 is provided on the upper surface of the carrying plate 11, and a longitudinal sliding block 12112 is provided on the lower surface of the bottom plate 1211. The longitudinal sliding block 12112 can slide longitudinally in the longitudinal sliding groove 112. By adopting the above structure, when it is necessary to adjust the position of the base plate 1211 longitudinally, the longitudinal sliding block 12112 can be slid longitudinally in the longitudinal sliding groove 112, which can avoid the lateral displacement of the base plate 1211 during the movement, so that the longitudinal position adjustment of the support frame 121 is accurate and convenient.

[0075] Please refer to Figure 7 and Fig. 9 The bottom wall of the upper receiving groove 1331 is provided with a first limiting groove 13311, the bottom surface of the plug body 1341 is provided with a second limiting groove 13412, and the return elastic member 135 is provided as a compression spring, the lower end of which is located in the first limiting groove 13311, and the upper end of which is located in the second limiting groove 13412. With the above structure, the two ends of the return elastic member 135 can be fixed in the first limiting groove 13311 and the second limiting groove 13412 respectively, so as to prevent the position of the return elastic member 135 from being offset.

[0076] Please refer to Figure 8 , Fig. 9 and Fig.11 , a lower receiving groove 1334 is provided at the bottom of the test cylinder 133. The test nut 136 includes a main rod 1361 and a connecting block 1362, the main rod 1361 is provided in the plug-through groove 1343, the connecting block 1362 is connected to the bottom end of the main rod 1361, the periphery of the connecting block 1362 protrudes from the bottom end of the main rod 1361, the connecting block 1362 is connected to the bearing plate 11 by screws, and the connecting block 1362 is accommodated in the lower receiving groove 1334. By providing the protruding connecting block 1362, it is convenient to connect the test nut 136 to the bearing plate 11. The connecting block 1362 is provided in the lower receiving groove 1334 at the bottom of the test cylinder 133, which can make the connection structure between the test nut 136 and the test cylinder 133 more compact.

[0077] The method of using the efficient and reliable electric batch testing device of the preferred embodiment of the utility model is as follows:

[0078] 1. Fix the electric screwdriver 10 on the electric screwdriver clamping assembly 122, and connect the electric screwdriver 10 to the test controller 14 through a communication line;

[0079] 2. Slide the transverse sliding block 152 in the transverse sliding groove 111 in the transverse direction to adjust the transverse position of the alignment adjustment plate 15; slide the longitudinal sliding block 12112 in the longitudinal sliding groove 112 in the longitudinal direction to adjust the longitudinal position of the bottom plate 1211, so that the electric screwdriver 10 is aligned with the test screw 137;

[0080] 3. The electric screwdriver 10 starts to screw the test screw 137 into the test nut 136 in sections according to the procedure, and relies on gravity to move downward along the vertical plate 1212 with the electric screwdriver clamping assembly 122. At the same time, the test controller 14 controls the control valve 131 to operate, and the electromagnet of the control valve 131 is energized, and the first interface 1311 and the second interface 1312 are disconnected through the control plate, and the hydraulic oil in the sealed chamber 1335 cannot flow into the oil tank 1321. As the test screw 137 is screwed in, the nut 1371 pushes the pressure head 139 downward, and the pressure head 139 pushes the piston 134 downward. In this process, the volume of the sealed chamber 1335 is reduced, so that the pressure in the sealed chamber 1335 increases, providing torque to the test screw 137, simulating the real working condition. As the torque rating of the electric screwdriver 10 is reached, after the tightening work is completed, the test controller 1 4. The control valve 131 is controlled to act, and the electromagnet of the control valve 131 loses power. The first interface 1311 and the second interface 1312 are connected through the control plate, and the oil tank 1321 is connected with the sealed chamber 1335 through the control valve 131. The hydraulic oil in the sealed chamber 1335 flows to the oil tank 1321 through the cylinder channel 1333, the first valve block channel 1322, the first interface 1311, the second interface 1312 and the second valve block channel 1323 in sequence. The volume of the sealed chamber 1335 increases, and the pressure in the sealed chamber 1335 decreases. The torque of the test screw 137 when tightened is close to 0. At this time, the test controller 14 controls the electric screwdriver 10 to reverse, and moves upward along the vertical plate 1212 with the electric screwdriver clamping assembly 122, so that the test screw 137 can be easily screwed out. At the same time, the return elastic member 135 makes the plug body 1341 move upward and reset. Repeat the above actions to complete the test and aging tasks of the electric screwdriver 10.

[0081] This completes the use method of the efficient and reliable electric batch testing device of the preferred embodiment.

[0082] The utility model discloses an efficient and reliable electric screwdriver testing device. Before the test, the electric screwdriver is fixed on the electric screwdriver clamping assembly, and the electric screwdriver is connected to the test controller through a communication line. After starting, the electric screwdriver starts to screw the test screw into the test nut in sections according to the program, and moves downward along the support frame with the electric screwdriver clamping assembly. At the same time, the test controller controls the control valve to disconnect the oil tank from the sealing chamber through the control valve, and the hydraulic oil in the sealing chamber cannot flow into the oil tank. As the test screw is screwed in, the nut pushes the piston downward. In this process, the volume of the sealing chamber is reduced, so that the volume of the sealing chamber is reduced. The pressure rises, providing torque to the test screw, simulating the real working condition. As the torque rating of the electric screwdriver is reached, after the tightening work is completed, the test controller controls the control valve to make the oil tank communicate with the sealing chamber through the control valve, and the hydraulic oil in the sealing chamber flows to the oil tank. The volume of the sealing chamber becomes larger, and the pressure in the sealing chamber decreases. The torque of the test screw when tightening is close to 0. At this time, the test controller controls the electric screwdriver to reverse and move upward along the support frame with the electric screwdriver clamping assembly, so that the test screw can be easily screwed out. At the same time, the return elastic member makes the plug body move upward and reset. Repeat the above actions to complete the test and aging tasks of the electric screwdriver. The cooperation between the extension part and the cylinder groove can isolate the test nut from the hydraulic oil in the sealing chamber. When replacing the test nut, the structure of the sealing chamber will not be destroyed, and the hydraulic oil will be prevented from flowing into the cylinder groove. The efficient and reliable electric screw test device of the utility model adopts hydraulic pressure to store pressure to produce the torque of the test screw locking test. After the hydraulic pressure is released and the locking force is removed, it can be easily loosened, which fundamentally realizes efficient and reliable locking experiments.

[0083] To sum up, although the present invention has been disclosed as above in the form of preferred embodiments, the protection scope of the present invention is not limited thereto, and any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the concept of the technical solution of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An efficient and reliable electric batch test device for testing the performance of an electric batch, characterized in that: include: A carrier plate, which is placed horizontally; The electric screwdriver fixing assembly comprises a support frame, a linear slide rail and an electric screwdriver clamping assembly; the support frame is arranged vertically; the track of the linear slide rail is connected to the support frame and arranged vertically; the electric screwdriver clamping assembly is connected to the slider of the linear slide rail, and the electric screwdriver clamping assembly is used to clamp the electric screwdriver; A torque test assembly, which includes a control valve, a transition valve block, a test cylinder, a piston, a return elastic member, a test nut and a test screw; the test cylinder is located below the electric screwdriver clamping assembly, the bottom of the test cylinder is connected to the bearing plate, the test cylinder is provided with an upper receiving groove and a cylinder through groove, the upper receiving groove is located at the top of the test cylinder, and the cylinder through groove passes through the bottom wall of the upper receiving groove and the bottom surface of the test cylinder; the piston includes a plug body and an extension part, the plug body is movably arranged in the upper receiving groove, and the periphery of the plug body is sealed and connected to the side wall of the upper receiving groove, the extension part protrudes from the bottom of the plug body, the extension part is movably arranged in the cylinder through groove, and the periphery of the extension part is sealed and connected to the side wall of the cylinder through groove, and the test cylinder and the piston are connected in the upper receiving groove. A sealing chamber is formed in the piston, and hydraulic oil is arranged in the sealing chamber. The piston is provided with a plug-through groove, and the plug-through groove passes through the plug body and the extension part; the return elastic member is compressed and arranged between the test cylinder body and the plug body, and the return elastic member is used to provide elastic force to make the plug body move upward; the bottom of the test nut is connected to the bearing plate, and the top of the test nut is arranged in the plug-through groove; the test screw includes a nut and a threaded rod, the threaded rod is rotatably arranged in the plug-through groove and is threadedly connected with the test nut, the nut is connected to the top of the threaded rod, and the periphery of the nut protrudes from the threaded rod; the transition valve block is provided with an oil tank, and the oil tank and the sealing chamber are both connected to the control valve, and the control valve is used to control the connection or disconnection of the oil tank and the sealing chamber; and, A test controller, which is electrically connected to the control valve and is used to be electrically connected to an electric batch; When the electric screwdriver drives the nut to move toward the test nut, the nut drives the plug body to move downward, and at the same time the oil tank is disconnected from the sealing chamber through the control valve; when the electric screwdriver drives the nut to move away from the test nut, the oil tank is connected to the sealing chamber through the control valve.

2. The efficient and reliable electric batch testing device according to claim 1 is characterized in that: The transition valve block is connected between the control valve and the test cylinder body; the test cylinder body is provided with a cylinder body channel, which is located below the upper accommodating groove, one port of the cylinder body channel is located on the bottom wall of the upper accommodating groove, and the other port is located on the side wall of the test cylinder body close to the transition valve block; the control valve is provided with a first interface and a second interface on the side facing the transition valve block, and a control plate is provided in the control valve for controlling the connection or disconnection of the first interface and the second interface; the transition valve block is provided with a first valve block channel and a second valve block channel, one end of the first valve block channel and one end of the second valve block channel are both located on a side of the transition valve block close to the control valve, the other end of the first valve block channel is located on a side of the transition valve block close to the test cylinder body, and the other end of the second valve block channel is located on the side wall of the oil tank, the first valve block channel connects the cylinder body channel and the first interface, and the second valve block channel connects the second interface and the oil tank.

3. The efficient and reliable electric batch testing device according to claim 1 is characterized in that: The plug body is provided with a first positioning groove along its circumference, and the side wall of the cylinder through groove is provided with a second positioning groove along its circumference. The piston also includes a first sealing ring and a second sealing ring. The first sealing ring is arranged in the first positioning groove, and its peripheral edge is sealed and connected with the side wall of the upper accommodating groove. The second sealing ring is sleeved on the extension part, and the second sealing ring is arranged in the second positioning groove.

4. The efficient and reliable electric batch testing device according to claim 1 is characterized in that: The torque testing assembly also includes a stop structure, which includes a stop ring and a fixing screw; the fixing screw is threadedly connected to the top of the test cylinder body, the stop ring is clamped between the top surface of the test cylinder body and the fixing screw, and the stop ring extends into the upper receiving groove and is located above the piston.

5. The efficient and reliable electric batch testing device according to claim 1 is characterized in that: The torque testing assembly also includes a pressure head, which is annular. The bottom outer periphery of the pressure head is provided with an external clamping groove, the inner periphery of the plug body is arranged in the external clamping groove, and the top inner periphery of the pressure head is provided with an internal clamping groove, and the nut is arranged in the internal clamping groove.

6. The efficient and reliable electric batch testing device according to claim 1 is characterized in that: The efficient and reliable electric batch testing device also includes an alignment adjustment plate, which is arranged above the bearing plate. The alignment adjustment plate is provided with a first long strip hole extending in the transverse direction for screws to pass through to connect the alignment adjustment plate and the bearing plate. The bottom of the test cylinder body and the bottom of the test nut are both connected to the alignment adjustment plate, and the transition valve block and the control valve are both connected to the test cylinder body.

7. The efficient and reliable electric batch testing device according to claim 6 is characterized in that: The upper surface of the carrying plate is provided with a transverse sliding groove, and the lower surface of the alignment adjustment plate is provided with a transverse sliding block, and the transverse sliding block can slide in the transverse sliding groove in the transverse sliding groove.

8. The efficient and reliable electric batch testing device according to claim 7 is characterized in that: The support frame includes a bottom plate and a vertical plate; the bottom plate is horizontally arranged and located above the supporting plate, and a second long hole extending in the longitudinal direction is provided on the bottom plate for screws to pass through to connect the bottom plate and the supporting plate; the vertical plate is connected to the bottom plate and arranged in the vertical direction, and the electric screwdriver clamping assembly is vertically slidably connected to the vertical plate.

9. The efficient and reliable electric batch testing device according to claim 8 is characterized in that: The upper surface of the carrying plate is provided with a longitudinal sliding groove, and the lower surface of the bottom plate is provided with a longitudinal sliding block, and the longitudinal sliding block can slide in the longitudinal sliding groove in the longitudinal sliding groove.

10. The efficient and reliable electric batch testing device according to claim 1 is characterized in that: The bottom wall of the upper accommodating groove is provided with a first limiting groove, the bottom surface of the plug body is provided with a second limiting groove, and the return elastic member is configured as a compression spring, the lower end of which is located in the first limiting groove, and the upper end of which is located in the second limiting groove.

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