Security bracket testing machine

Abstract

The invention discloses a safety bracket testing machine, comprising a testing machine frame, wherein a testing room is arranged in the testing machine frame, a working platform is arranged at the bottom of the testing room, a translation track is arranged on the working platform, a detection table plate is slidably mounted on the translation track, a limiting mechanism is arranged on the detection table plate, a driving bar is arranged on the side of the detection table plate, the driving bar is connected with a sliding cylinder, testing tracks are arranged on both sides of the testing room, a test bracket is slidably mounted on the test track, a detection hydraulic device is connected to the top of the test bracket, a test pressure head is arranged at the bottom of the test bracket, and a pressure sensor is arranged on the test pressure head; the invention can automatically displace the safety bracket by sliding the detection table plate on the working platform, and perform cyclic pressure detection on the top two ends of the safety bracket, and the testing efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of pressure testing machines, in particular to the technical field of safety bracket testing machines. Background Art

[0002] Safety stands play an indispensable role in the fields of maintenance and safety. When using a jack on a car, first stabilize the vehicle, such as placing cover wood or stones, then correctly open the stand, locate the support points, and ensure personal safety during operation; when used in conjunction with a jack, the safety stand not only improves the safety of operation, but also provides additional support points, especially for large vehicles, avoiding potential dangers caused by using an incompatible jack.

[0003] The structure of the safety bracket must meet the requirements of strength, stability and reliability, and be able to withstand normal use and sudden torque. The existing safety bracket is tested by a pressure testing machine, which can only perform fixed-point testing on the safety bracket during testing, and the testing efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a safety bracket testing machine that can solve the above problems.

[0005] To achieve the above-mentioned purpose, the present invention proposes a security bracket testing machine, comprising a testing machine frame, a testing chamber is arranged in the testing machine frame, a working platform is arranged at the bottom of the testing chamber, a translation track is arranged on the working platform, a detection table is slidably installed on the translation track, a limiting mechanism is arranged on the detection table, a driving bar is arranged on the side of the detection table, the driving bar is connected to a sliding cylinder, test tracks are arranged on both sides of the testing chamber, a test bracket is slidably installed on the test track, a detection hydraulic device is connected to the top of the test bracket, a test pressure head is installed at the bottom of the test bracket, a pressure sensor is arranged on the test pressure head, a control box is arranged on the side of the testing machine frame, a touch electronic screen and a manual operation area are arranged on the control box, and the sliding cylinder and the test pressure head are connected to the control box.

[0006] Preferably, the manual operation area is provided with a cylinder up button, a cylinder down button, an automatic start button and an emergency stop button.

[0007] Preferably, a door frame is provided on the front side of the working platform, a safety door is slidably mounted on the door frame, a lifting device is installed on the testing machine frame, the safety door is driven by the lifting device, and the lifting device is connected to the control box.

[0008] Preferably, the limiting mechanism includes four fixed stop blocks, which are installed at the four corners of the detection table. The fixed stop block includes a limiting strip, which is connected to an adjustment block. A strip groove is provided on the adjustment block, and an adjusting bolt is provided through the strip groove. The head size of the adjusting bolt is larger than the width of the strip groove. The rod of the adjusting bolt is slidably set in the strip groove. A threaded groove matching the adjusting bolt is provided on the detection table, and the rod of the adjusting bolt is threadedly installed in the threaded groove.

[0009] Preferably, the hydraulic device includes a cylinder and a piston rod, the output end of the piston rod is connected to the test bracket, the cylinder and the oil tank are connected by a hydraulic pipeline, the oil tank is connected to an oil pump, an electronic proportional valve is provided on the hydraulic pipeline, and the electronic proportional valve and the oil pump are connected to a control box.

[0010] Preferably, during the working process, the safety bracket is first placed on the detection table, and the base of the main safety bracket is fixed by a limiting mechanism. A rack is provided on the top of the safety bracket, and a head is provided on the top of the rack. Raised vertices are provided on both sides of the head, and a groove is provided between the two vertices. After the safety bracket is completed, when the detection table is in place, one vertex of the safety bracket is aligned with the center of the test pressure head, the sliding cylinder is started, and after the detection table slides a certain distance, the other vertex of the safety bracket is aligned with the center of the test pressure head.

[0011] The beneficial effects of the present invention are as follows: the present invention can automatically displace the safety bracket and perform cyclic pressure detection on the top two ends of the safety bracket by sliding the detection table plate on the working platform. There is no need to manually position the safety bracket, the test efficiency is high, and the supporting performance of the safety bracket can be better guaranteed; the fixed baffle block can limit and fix the base of the safety bracket to prevent the safety bracket from being displaced during movement, thereby ensuring the accuracy of the test; the hydraulic system of the present invention adopts a leading servo motor to drive an ultra-quiet high-pressure pump, which has the characteristics of stable pressure, high pressure regulation accuracy and low noise. After improving the traditional detection equipment, it can be tested in accordance with the new national standards and international standard solutions, especially by using an electronic proportional valve, which makes the electronic pressure regulation test operation more convenient; the electronic system adopts intelligent sensing technology to accurately detect pressure signals, and uses a high-performance PLC controller to perform real-time signal processing and pressure monitoring and judgment, providing accurate logical instructions for the operation of the equipment.

[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2It is a front view of the present invention; Figure 3 It is a schematic diagram of the safety door of the present invention; Figure 4 is a schematic diagram of the interior of a test chamber of the present invention; Figure 5 is a top view of the present invention; Figure 6 It is a schematic diagram of the detection table of the present invention; Figure 7 is a schematic diagram of a fixed stop block of the present invention; Figure 8 It is a schematic diagram of installing the adjusting bolt of the present invention.

[0014] In the figure: 1. test machine frame; 2. test room; 3. work platform; 31. door frame; 32. safety door; 4. test table; 41. translation track; 42. drive bar; 43. threaded groove; 5. sliding cylinder; 6. test bracket; 61. piston rod; 63. oil tank; 65. oil pump; 7. test pressure head; 8. control box; 81. touch electronic screen; 82. manual operation area; 9. fixed stop block; 91. limit card strip; 92. adjustment block; 93. strip groove; 94. adjustment bolt; 10. safety bracket. DETAILED DESCRIPTION

[0015] See also Figures 1 to 8A security bracket tester comprises a tester frame 1, a test chamber 2 is arranged in the tester frame 1, a working platform 3 is arranged at the bottom of the test chamber 2, a translation track 41 is arranged on the working platform 3, a detection table 4 is slidably mounted on the translation track 41, a limit mechanism is arranged on the detection table 4, a driving bar 42 is arranged on the side of the detection table 4, and a sliding cylinder 5 is connected to the driving bar 42, test rails are arranged on both sides of the test chamber 2, a test bracket 6 is slidably mounted on the test rails, and a detection bracket 6 is connected to the top of the test bracket 6 A test hydraulic device is provided, a test pressure head 7 is installed at the bottom of the test bracket 6, and a pressure sensor is provided on the test pressure head 7. A control box 8 is provided on the side of the test machine frame 1, and a touch-type electronic screen 81 and a manual operation area 82 are provided on the control box 8. The sliding cylinder 5 and the test pressure head 7 are connected to the control box 8; the manual operation area 82 is provided with an oil cylinder up button, an oil cylinder down button, an automatic start button and an emergency stop button; a door frame 31 is provided on the front side of the working platform 3, and a safety door 32 is slidably installed on the door frame 31. The test machine frame 1 is provided with a lifting device, the safety door 32 is driven by the lifting device, and the lifting device is connected to the control box 8; the limiting mechanism includes four fixed stopper blocks 9, and the four fixed stopper blocks 9 are installed at the four corners of the detection table 4, and the fixed stopper blocks 9 include a limiting card strip 91, and the limiting card strip 91 is connected with an adjustment block 92, and a strip groove 93 is opened on the adjustment block 92, and an adjustment bolt 94 is provided through the strip groove 93, and the head size of the adjustment bolt 94 is larger than the strip groove 93. The width of the adjusting bolt 94 is slidably arranged in the strip groove 93, and a threaded groove 43 matching the adjusting bolt 94 is provided on the detection table 4, and the rod of the adjusting bolt 94 is threadedly installed with the threaded groove 43; the hydraulic device includes a cylinder and a piston rod 61, the output end of the piston rod 61 is connected to the test bracket 6, the cylinder is connected to the oil tank 63 through a hydraulic pipeline, the oil tank 63 is connected to an oil pump 65, and an electronic proportional valve is provided on the hydraulic pipeline, and the electronic proportional valve and the oil pump 65 are connected to the control box 8.

[0016] Working process of the present invention: Expel air from the oil circuit: Before powering on the equipment, first check the electronic pressure adjustment position of the control box, turn the electronic pressure adjustment counterclockwise to the bottom (minimum pressure position), and then power on; after powering on, the equipment first completes the oil circuit air removal operation; press the oil pump start button on the display screen, at this time the green indicator light on the oil pump start button is on, and the oil pump motor runs forward; then manually press the oil cylinder down button to let the pressure piston rod go down to the bottom and press the stop button; finally, press the oil cylinder up button to let the piston go up again and return to the top, and repeat the operation 5-6 times to exhaust all the air from the oil circuit.

[0017] Center alignment: After the air in the oil circuit is exhausted, the piston rod is at the highest position on the upper end of the equipment. At this time, the safety bracket to be tested can be placed; the safety bracket to be tested must be placed on the detection center point marked on the sensor head under the piston rod, and then adjust the safety bracket fixing block bars on the four sides of the sliding plate to prevent the detection movement from loosening. After it is placed securely, a certain space height of 15mm to 20mm is left between the top of the detection main cylinder and the top of the rack of the safety bracket to match each other, ensuring that during the pressurization test, the safety bracket moves up and down within the effective stroke range.

[0018] Set the pressure protection value: Before the formal test, you must first determine the tonnage value of the safety bracket being tested, then turn the knob of the electronic proportional valve in the control operation box counterclockwise to the low position, then click the setting interface on the screen, click the touch button to set the down time to 5 seconds, the up time to 1 second, and the pressure holding time to the corresponding holding time according to the product requirements. It is generally set to 5 seconds for testing on the production line.

[0019] After the settings are completed, return to the main page, click the oil pump to start, manually press the cylinder down button, and after the cylinder moves downward to the center point of the safety bracket (it needs to be aligned with the top point when switching to the circulation mode), start turning the knob to control the electronic proportional valve, adjust it clockwise to the tonnage value corresponding to the safety bracket, then release it, and manually press the cylinder up button to make the distance between the test pressure head and the top of the bracket rack about 15mm.

[0020] After the preparations are done, press the automatic button, the safety door will automatically slide down to protect the operator, set the working mode to start the test, and after the test is completed, the protective door will automatically pull up to complete the test.

[0021] In the cycle test mode, the safety bracket 10 is first placed on the detection table 4, and the base of the main safety bracket 10 is fixed by the limit mechanism. A rack is provided on the top of the safety bracket 10, and a head is provided on the top of the rack. Raised vertices are provided on both sides of the head, and a groove is provided between the two vertices. After the safety bracket 10 is completed, when the detection table 4 is in place, one vertex of the safety bracket 10 is aligned with the center of the test pressure head 7, and the sliding cylinder 5 is started. After the detection table 4 slides a certain distance, the other vertex of the safety bracket 10 is aligned with the center of the test pressure head 7.

[0022] After setting the tonnage value corresponding to the safety bracket in the same way, press the automatic button to start the automatic cycle test, the safety door drops and closes, the cylinder moves downward, the test pressure head tests one vertex, and after maintaining the pressure for a period of time at the set pressure, the cylinder moves upward, the sliding cylinder drives the detection table to slide, and the safety bracket is moved. After the movement is completed, the cylinder moves downward, the test pressure head tests another vertex, and maintains the pressure for a period of time at the set pressure.

[0023] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A safety bracket testing machine, characterized in that: The invention comprises a testing machine frame (1), wherein a testing chamber (2) is provided in the testing machine frame (1), a working platform (3) is provided at the bottom of the testing chamber (2), a translation track (41) is provided on the working platform (3), a detection table (4) is slidably mounted on the translation track (41), a limiting mechanism is provided on the detection table (4), a driving bar (42) is provided on the side of the detection table (4), and a sliding cylinder (5) is connected to the driving bar (42), testing tracks are provided on both sides of the testing chamber (2), a testing bracket (6) is slidably mounted on the testing tracks, a detection hydraulic device is connected to the top of the testing bracket (6), a testing pressure head (7) is installed at the bottom of the testing bracket (6), and a pressure sensor is provided on the testing pressure head (7), a control box (8) is provided on the side of the testing machine frame (1), a touch-type electronic screen (81) and a manual operation area (82) are provided on the control box (8), and the sliding cylinder (5) and the testing pressure head (7) are connected to the control box (8).

2. The safety bracket testing machine according to claim 1, characterized in that: The manual operation area (82) is provided with an oil cylinder up button, an oil cylinder down button, an automatic start button and an emergency stop button.

3. The safety bracket testing machine according to claim 1, characterized in that: A door frame (31) is provided at the front side of the working platform (3), a safety door (32) is slidably mounted on the door frame (31), a lifting device is mounted on the testing machine frame (1), the safety door (32) is driven by the lifting device, and the lifting device is connected to the control box (8).

4. The safety bracket testing machine according to claim 1, characterized in that: The limiting mechanism comprises four fixed stop blocks (9), which are mounted at four corners of the detection table (4); the fixed stop blocks (9) comprise a limiting clamping strip (91), the limiting clamping strip (91) being connected to an adjustment block (92); a strip groove (93) being provided on the adjustment block (92); an adjustment bolt (94) being provided through the strip groove (93); a head size of the adjustment bolt (94) being larger than a width of the strip groove (93); a rod portion of the adjustment bolt (94) being slidably disposed in the strip groove (93); a threaded groove (43) matching the adjustment bolt (94) being provided on the detection table (4); and a rod portion of the adjustment bolt (94) being threadedly mounted on the threaded groove (43).

5. The safety bracket testing machine according to claim 1, characterized in that: The hydraulic device comprises an oil cylinder and a piston rod (61), the output end of the piston rod (61) is connected to the test bracket (6), the oil cylinder is connected to an oil tank (63) via a hydraulic pipeline, the oil tank (63) is connected to an oil pump (65), an electronic proportional valve is provided on the hydraulic pipeline, and the electronic proportional valve and the oil pump (65) are connected to a control box (8).

6. The safety bracket testing machine according to claim 1, characterized in that: During operation, the safety bracket (10) is first placed on the detection table (4), and the base of the main safety bracket (10) is fixed by a limit mechanism. A rack is provided on the top of the safety bracket (10), and a top head is provided on the top of the rack. Both sides of the top head are provided with raised vertices, and a groove is provided between the two vertices. After the safety bracket (10) is completed, when the detection table (4) is in place, one vertex of the safety bracket (10) is aligned with the center of the test pressure head (7), and the sliding cylinder (5) is started. After the detection table (4) slides a certain distance, the other vertex of the safety bracket (10) is aligned with the center of the test pressure head (7).

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