A vertical impact durability testing device for electric drills

Abstract

The present invention belongs to the field of machine testing technology, and specifically, relates to a vertical impact durability test device for an electric drill, comprising a test chassis, sleeve 1, sleeve 2, piston 2, a pressure sensor and a pressure measuring instrument. The test chassis is provided with sleeve 2 having the same number as sleeve 1 and corresponding to sleeve 1 one by one, sleeve 2 is slidably provided with piston 2 driven by an external power source, the interior of sleeve 2 is loaded with hydraulic oil, pipeline 1 is connected between sleeve 2 and the corresponding sleeve 1 to circulate the hydraulic oil, sleeve 1 is provided with a pressure measuring instrument, the lower part of the test chassis is provided with a pressure sensor, and the pressure sensor is provided with a test baffle for rotating the drill bit on the electric drill. The electric drill can be directly stabilized by the control of the hydraulic oil, and when the electric drill is subjected to a vertical impact durability test in a static or dynamic balance, the electric drill is prevented from having excess moving space, and abnormal shaking of the electric drill is avoided, thereby ensuring the effect of the test.

Description

Technical Field

[0001] The invention belongs to the technical field of machine testing, and in particular relates to a vertical impact durability testing device for an electric drill. Background Art

[0002] An electric drill is a drilling tool that uses electricity as power. In order to ensure the quality and safety of the electric drill and verify its function, it is necessary to conduct a vertical impact durability test on the electric drill using static or dynamic balance during the production of the electric drill. However, during the test, the existing testing equipment (for example, patent publication number CN114563167A, which discloses an electric drill impact durability testing device) can only move the electric drill downward by the drive of the cylinder, while the upward reset of the electric drill requires a spring, and it cannot be raised and lowered stably. During the test, the electric drill will continue to shake due to the deformation of the spring, and the stability is low, which affects the test effect. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide an electric drill vertical impact durability testing device that can be stably raised and lowered during the test and avoid abnormal shaking due to insufficient stability during the balance test.

[0004] In order to solve the above technical problems, the present invention provides such an electric drill vertical impact durability test device, which also includes a test base, a sleeve 1, a piston 1, a fixed platform, a sleeve 2, a piston 2, a pressure sensor and a pressure measuring instrument. The test base is vertically connected with a plurality of sleeves 1 arranged in a square and perpendicular to the test base, specifically four sleeves 1, and pistons 1 are slidably arranged on the four sleeves 1. A fixed platform for supporting the electric drill to move axially along the sleeve 1 is arranged between the upper parts of the four pistons 1. The test base is provided with sleeves 2 having the same number as the sleeves 1 and corresponding to the sleeves 1 one by one. The upper part of the sleeves 2 is slidably provided with pistons 2 driven by an external power source. The interior of the sleeves 2 is loaded with hydraulic oil. A pipeline 1 is connected between the sleeves 2 and the corresponding sleeves 1 to circulate the hydraulic oil in the sleeves 2. A pressure measuring instrument is arranged on the sleeve 1. Two left-right opposite pressure sensors are arranged at the lower part of the test base, and a test baffle for rotating the drill bit on the electric drill is arranged between the upper parts of the two pressure sensors.

[0005] Preferably, it also includes a partition, a pipe 2 and a conduit. The lower end of the piston 1 divides the interior of the sleeve 1 into an upper cavity and a lower cavity whose capacities can be alternately increased or decreased. The capacities of the upper cavity and the lower cavity of the sleeve 1 change with the movement of the piston 1. The interior of the sleeve 2 is connected with a partition for separating the internal space of the sleeve 2. The end of the piston 2 divides the upper space of the sleeve 2 into an upper space and a lower space which can be alternately increased or decreased with the movement of the piston 2. A conduit for conveying hydraulic oil is connected between the upper space of the sleeve 2 and the lower space of the sleeve 2. The partition divides the interior of the sleeve 2 into an upper and lower part. The pipe 1 is connected between the upper cavity of the sleeve 1 and the upper space of the sleeve 2. The pipe 2 is connected between the lower cavity of the sleeve 1 and the lower space of the sleeve 2.

[0006] Preferably, the interiors of sleeve one, sleeve two and sleeve three are all filled with hydraulic oil, which realizes stable and reliable power output, efficient transmission and conversion of energy.

[0007] Preferably, a driving assembly is also included to replace the external power source to drive piston 2, and the driving assembly includes a nut, a gear ring and a driving gear. Piston 2 is provided with a thread, and the thread is located at the lower part of piston 2. The upper part of sleeve 2 is rotatably provided with a nut that cooperates with the thread on piston 2, and the gear ring is connected to the outer ring of the nut. Sleeve 2 is rotatably provided with a driving gear that meshes with the gear ring, and the driving gear is driven by an external motor.

[0008] Preferably, the fixed platform includes a lifting plate, a bidirectional screw and a rubber-coated clamp. The lifting plate is connected between the upper parts of the four pistons. The upper part of the lifting plate is rotatably provided with two left-right opposite bidirectional screws. Two front-to-back opposite rubber-coated clamps are threadedly connected between the middle parts of the two bidirectional screws. The rubber-coated clamp is used to clamp the electric drill on the lifting plate.

[0009] Preferably, an elastic member is also included. The test baffle is slidably arranged on the test chassis. An elastic member connected to the test chassis is arranged between the test baffle and the test chassis. The elastic member is an elastic arc plate. Both ends of the arc plate are connected to the test chassis.

[0010] Preferably, a connecting frame is also included, and the connecting frame is connected between the pistons and is used to synchronize the movement of all the pistons.

[0011] Preferably, it also includes a piston cylinder and a switch top column. The upper left side of the lifting plate is connected to the piston cylinder, and the piston cylinder is provided with a switch top column for resisting the electric drill switch to automatically start and close the electric drill.

[0012] Preferably, it also includes sleeve three, corrugated hose and piston three. The switch top column is slidably arranged on the piston cylinder. The sleeve three is connected to the position of the test base frame near the lifting plate. The corrugated hose is connected between the sleeve three and the piston cylinder. The piston three connected to the connecting frame is slidably arranged on the sleeve three. The lower end of the piston three slides through the sleeve three and is connected to the connecting frame.

[0013] Preferably, a distance tester is also included. The test chassis is provided with a distance tester for testing the lifting distance of the electric drill. A sliding pointer is slidably provided on the distance tester. A pull rod for transmitting power is connected between the second piston and the sliding pointer.

[0014] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects:

[0015] 1. The electric drill can be directly stabilized by the control of hydraulic oil. When the electric drill is subjected to vertical impact durability test with static or dynamic balance, it can prevent the electric drill from having extra movement space and abnormal shaking of the electric drill, thus ensuring the test effect.

[0016] 2. The hydraulic oil filled inside sleeve 1, sleeve 2 and sleeve 3 forms a closed hydraulic oil circulation and delivery system, which outputs stable power to the fixed platform, greatly improving the stability of the static or dynamic balance test of the electric drill.

[0017] 3. When the electric drill moves down, the power of the electric drill is automatically and synchronously increased, thereby simulating the usage scenario and making the test effect of the electric drill more realistic. At the same time, no manual control is required, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an assembly schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the test chassis, pressure sensor and elastic member of the present invention.

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of part of the structure.

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the fixed platform.

[0022] Figure 5 It is a schematic diagram of the sleeve 1, sleeve 2 and catheter of the present invention when they are cut open.

[0023] Figure 6 It is a schematic diagram of the cooperation between the electric drill in the prior art and the present invention.

[0024] Figure 7It is a cross-sectional view of the piston cylinder and sleeve three of the present invention.

[0025] Figure 8 It is a schematic diagram of the piston 2, the distance tester and the pull rod of the present invention.

[0026] The marks in the accompanying drawings provided by the present invention are:

[0027] 01-electric drill, 1-test base, 2-pressure sensor, 3-test baffle, 4-sleeve one, 5-piston one, 6-fixed platform, 61-lifting plate, 62-bidirectional screw, 63-rubber-coated fixture, 7-sleeve two, 8-piston two, 9-pipeline one, 10-pressure measuring instrument, 11-partition, 12-pipeline two, 13-conduit, 14-thread, 15-nut, 16-driving gear, 17-piston cylinder, 18-switch top column, 19-sleeve three, 20-piston three, 21-corrugated hose, 22-connecting frame, 23-distance tester, 24-pull rod, 25-elastic part. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Embodiment 1: A vertical impact durability test device for an electric drill, such as Figure 1-Figure 5As shown, it also includes a test chassis 1, a sleeve 4, a piston 5, a fixed platform 6, a sleeve 2 7, a piston 2 8, a pressure sensor 2 and a pressure measuring instrument 10. The test chassis 1 is vertically connected with a plurality of sleeves 4 arranged in a square and perpendicular to the test chassis 1. In this embodiment, there are four sleeves 4, and pistons 5 are slidably arranged on the four sleeves 4. A fixed platform 6 for supporting the electric drill 01 to move axially along the sleeve 4 so as to adjust the position for use testing is provided between the upper parts of the four pistons 5. The test chassis 1 is provided with the same number of sleeves as the sleeves 4 and corresponding to the sleeves 4 one by one. Sleeve 27, the upper part of sleeve 27 is slidably penetrated by a piston 28 driven by an external power source, the interior of sleeve 27 is loaded with hydraulic oil, a pipeline 19 is connected between sleeve 27 and the corresponding sleeve 14 to circulate the hydraulic oil in sleeve 27, a pressure measuring instrument 10 is provided on sleeve 14, when the hydraulic oil flows in sleeve 14, the pressure measuring instrument 10 will test the oil pressure of the hydraulic oil, so as to carry out real-time monitoring, the lower part of the test base 1 is provided with two left and right opposite pressure sensors 2, and a test baffle 3 for rotating the drill bit on the power drill 01 is provided between the upper parts of the two pressure sensors 2.

[0031] The operator can apply the corresponding technical solutions in the device to the technology of the durability test of the electric drill 01 according to the specific situation. When it is necessary to use the device to assist in the operation of the durability test of the electric drill 01, first, fix the electric drill 01 on the fixed platform 6, use tape to continuously press the switch of the electric drill 01 to start the electric drill 01, and then make the piston 28 rise and fall. When the piston 28 moves down, the hydraulic oil in the sleeve 27 will flow into the sleeve 14 through the pipe 19, and the piston 15 will be squeezed and moved down by the hydraulic oil, so that the piston 15 drives the electric drill 01 to move down through the fixed platform 6. When the piston 28 moves up, the fixed platform 6 drives the electric drill 01 to move up, so that the electric drill 01 can be stably moved by the action of the hydraulic oil. The height of the electric drill 01 is adjusted. After the adjustment is completed, the drill bit of the electric drill 01 is continuously in contact with the test baffle 3, so that the electric drill 01 is subjected to a vertical impact durability test with static balance. When the piston 8 is reciprocated, the electric drill 01 can be reciprocated and the electric drill 01 will indirectly contact the test baffle 3, so that the electric drill 01 is subjected to a vertical impact durability test with dynamic balance. At the same time, the electric drill 01 can be directly stabilized by the control of the hydraulic oil to avoid abnormal shaking of the electric drill 01 and ensure the test effect. The pressure sensor can test the impact pressure generated when the electric drill 01 contacts the test baffle 3, so as to further conduct an impact durability test on the electric drill 01.

[0032] Embodiment 2: Based on embodiment 1, Figure 5As shown, it also includes a partition 11, a pipe 12 and a conduit 13. The lower end of the piston 5 divides the interior of the sleeve 4 into an upper cavity and a lower cavity whose capacities can be alternately increased or decreased. The capacities of the upper cavity and the lower cavity of the sleeve 4 change with the movement of the piston 5. The interior of the sleeve 7 is connected with a partition 11 for separating the internal space of the sleeve 7. The end of the piston 8 divides the upper space of the sleeve 7 into an upper space and a lower space that can be alternately increased or decreased with the movement of the piston 8. The upper space of the sleeve 7 and the lower space of the sleeve 7 are connected with a conduit 13 for conveying hydraulic oil. The partition 11 divides the interior of the sleeve 7 into upper and lower parts. The pipe 9 is connected between the upper cavity of the sleeve 4 and the upper space of the sleeve 7. The lower cavity of the sleeve 4 and the lower space of the sleeve 7 are connected with a pipe 12.

[0033] As a preferred embodiment of the present invention, the interiors of sleeve one 4, sleeve two 7 and sleeve three 19 are all filled with hydraulic oil, and the hydraulic oil realizes stable and reliable power output, efficient transmission and conversion of energy.

[0034] When piston 28 moves downward, the hydraulic oil in the lower space of the upper space of sleeve 27 will be input into the upper cavity of sleeve 14 through pipe 19. At this time, piston 15 is squeezed downward by the hydraulic oil input above, and the hydraulic oil in the lower cavity of sleeve 14 will be input into the lower space of sleeve 27 through pipe 212. The conduit 13 will replenish the hydraulic oil inside it and the hydraulic oil newly input into the lower space of sleeve 27 into the upper space of the upper space of sleeve 27, thereby forming a closed hydraulic oil circulation and delivery system, outputting power to the fixed platform 6, thereby further stabilizing the static or dynamic balance test of the electric drill 01 through hydraulic oil, greatly improving the stability of the test.

[0035] Embodiment 3: Based on embodiment 2, Figure 5 As shown, it also includes a driving assembly that replaces the external power source to drive the piston 28, the driving assembly includes a nut 15, a gear ring and a driving gear 16. The piston 28 is provided with a thread 14, and the thread 14 is located at the lower part of the piston 28. The upper part of the sleeve 27 is rotatably provided with a nut 15 that cooperates with the thread 14 on the piston 28. The gear ring is connected to the outer ring of the nut 15. The sleeve 27 is rotatably provided with a driving gear 16 that meshes with the gear ring. The driving gear 16 is driven by an external motor, and the external motor is installed on the sleeve 27. When the driving gear 16 is driven to rotate, it will mesh with the gear ring on the nut 15, and then the nut 15 rotates to drive the piston 28 to move downward. When the driving gear 16 rotates in the opposite direction, the piston 28 moves upward.

[0036] like Figure 4As shown, the fixed platform 6 includes a lifting plate 61, a bidirectional screw rod 62 and a rubber-coated clamp 63. The lifting plate 61 is connected between the upper parts of the four pistons 5. The upper part of the lifting plate 61 is rotatably provided with two left-right opposite bidirectional screw rods 62. Two front-to-back opposite rubber-coated clamps 63 are threadedly connected between the middle parts of the two bidirectional screw rods 62. The rubber-coated clamp 63 is used to clamp the electric drill 01 on the lifting plate 61. The two rubber-coated clamps 63 are controlled by rotating the bidirectional screw rod 62 to clamp the electric drill 01. This can prevent the electric drill 01 from being out of position when performing static balance or dynamic balance tests, and has high stability.

[0037] like Figure 2 As shown, an elastic member 25 is also included. The test baffle 3 is slidably arranged on the test base frame 1. An elastic member 25 connected to the test base frame 1 is arranged between the test baffle 3 and the test base frame 1. The elastic member 25 is an elastic arc plate. Both ends of the arc plate are connected to the test base frame 1. When the test baffle 3 is excessively squeezed by the drill bit of the electric drill 01, the test baffle 3 will move downward to avoid damage to the drill bit of the electric drill 01. The elastic member 25 will deform adaptively. When the electric drill 01 moves upward, the baffle will move upward and reset under the action of the elastic member 25.

[0038] Embodiment 4: Based on the embodiment 3, Figure 6 As shown, a connecting frame 22 is also included, and the connecting frame 22 is connected between the pistons 8 for synchronizing the movement of all the pistons 8.

[0039] like Figure 6 and Figure 7 As shown, it also includes a piston cylinder 17 and a switch top column 18. The piston cylinder 17 is connected to the upper left side of the lifting plate 61. The piston cylinder 17 is provided with a switch top column 18 for resisting the switch of the electric drill 01 to automatically start and close the electric drill 01.

[0040] like Figure 6 and Figure 7 As shown, it also includes a sleeve three 19, a corrugated hose 21 and a piston three 20. The switch top column 18 is slidably arranged on the piston cylinder 17. The sleeve three 19 is connected to the position of the test base frame 1 close to the lifting plate 61. The corrugated hose 21 is connected between the sleeve three 19 and the piston cylinder 17. The piston three 20 connected to the connecting frame 22 is slidably arranged on the sleeve three 19. The lower end of the piston three 20 slides through the sleeve three 19 and is connected to the connecting frame 22.

[0041] When the electric drill 01 is fixed to the fixed platform 6, the switch top column 18 will resist the switch of the electric drill 01, thereby automatically turning on the electric drill 01, and there is no need to use tools such as tape to control the switch of the electric drill 01. When the electric drill 01 is raised and lowered for a dynamic balance impact durability test, the downward movement of the piston 2 8 will drive the piston 3 20 to move downward through the connecting frame 22, and the air in the sleeve 3 19 will be transported to the piston cylinder 17 through the corrugated hose 21. At this time, the switch top column 18 is squeezed upward by the air pressure, and the switch of the electric drill 01 is further triggered, so that the power of the electric drill 01 is automatically and synchronously increased when the electric drill 01 moves downward, thereby simulating the use scenario (for example, when drilling screws and screw holes, the power of the electric drill 01 needs to be gradually increased as the depth increases to ensure the use effect, and at the same time, it is used at low power at the beginning to ensure the stability of the screw), so that the test effect of the electric drill 01 is more realistic, and no manual control is required, with a high degree of automation.

[0042] Embodiment 5: Based on Embodiment 4, Figure 1 and Figure 8 As shown, a distance tester 23 is also included. The test base frame 1 is provided with a distance tester 23 for conveniently testing the lifting distance of the electric drill 01. A sliding pointer is slidably provided on the distance tester 23. A pull rod 24 for transmitting power is connected between the piston 28 and the sliding pointer. When the piston 28 moves downward, the sliding pointer is driven downward by the pull rod 24, so that the downward movement distance of the piston 28 can be visualized through the distance tester 23.

[0043] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0044] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A vertical impact durability test device for an electric drill, comprising a test frame (1), a sleeve (4), a piston (5) and a fixed platform (6), wherein a plurality of sleeves (4) perpendicular to the test frame (1) are vertically connected to the test frame (1), a piston (5) is slidably arranged on the sleeve (4), and a fixed platform (6) for supporting the electric drill (01) to move axially along the sleeve (4) is arranged between the pistons (5), characterized in that: It also includes a sleeve 2 (7), a piston 2 (8), a pressure sensor (2) and a pressure measuring instrument (10). The test base frame (1) is provided with sleeve 2 (7) of the same number as the sleeve 1 (4) and corresponding to the sleeve 1 (4) one by one. The sleeve 2 (7) is slidably provided with a piston 2 (8) driven by an external power source. The interior of the sleeve 2 (7) is loaded with hydraulic oil. The pipeline 1 (9) is connected between the sleeve 2 (7) and the corresponding sleeve 1 (4) to circulate the hydraulic oil. The sleeve 1 (4) is provided with a pressure measuring instrument (10). The lower part of the test base frame (1) is provided with a pressure sensor (2). The pressure sensor (2) is provided with a test baffle (3) for supplying a drill bit rotation test on the power drill (01); The invention also comprises a partition plate (11), a second pipe (12) and a conduit (13); the end of the first piston (5) divides the interior of the first sleeve (4) into an upper cavity and a lower cavity whose capacities can be alternately increased or decreased; the interior of the second sleeve (7) is connected to a partition plate (11) for dividing the internal space of the second sleeve (7); the end of the second piston (8) divides the upper space of the second sleeve (7) into an upper space and a lower space whose capacities can be alternately increased or decreased; the upper space of the second sleeve (7) and the lower space of the second sleeve (7) are connected by a conduit (13); the first pipe (9) is connected between the upper cavity of the first sleeve (4) and the upper space of the second sleeve (7); the lower cavity of the first sleeve (4) and the lower space of the second sleeve (7) are connected by a second pipe (12).

2. The electric drill vertical impact durability testing device according to claim 1, characterized in that: The interiors of sleeve one (4), sleeve two (7) and sleeve three (19) are all filled with hydraulic oil, which realizes power output, energy transmission and conversion.

3. The electric drill vertical impact durability testing device according to claim 1, characterized in that: The invention also comprises a driving assembly for driving the second piston (8) in place of an external power source, the driving assembly comprising a nut (15), a gear ring and a driving gear (16), the second piston (8) being provided with a thread (14), the second sleeve (7) being rotatably provided with a nut (15) which cooperates with the thread (14) on the second piston (8), the gear ring being connected to the nut (15), and the second sleeve (7) being rotatably provided with a driving gear (16) which meshes with the gear ring.

4. The electric drill vertical impact durability testing device according to claim 1, characterized in that: The fixed platform (6) comprises a lifting plate (61), a bidirectional screw rod (62) and a rubber-coated clamp (63). The lifting plate (61) is connected between the pistons (5). A bidirectional screw rod (62) is rotatably provided on the lifting plate (61). The middle part of the bidirectional screw rod (62) is threadedly connected to two rubber-coated clamps (63) which are opposite to each other in front and back. The rubber-coated clamp (63) is used to clamp the electric drill (01) on the lifting plate (61).

5. The electric drill vertical impact durability testing device according to claim 1, characterized in that: The test baffle (3) is slidably mounted on the test base frame (1). The elastic member (25) is arranged between the test baffle (3) and the test base frame (1). The elastic member (25) is arc-shaped. Both ends of the elastic member (25) are connected to the test base frame (1).

6. The electric drill vertical impact durability testing device according to claim 4, characterized in that: It also includes a connecting frame (22), and the connecting frame (22) is connected between the pistons (8) and is used for synchronizing the movement of all the pistons (8).

7. The electric drill vertical impact durability testing device according to claim 6, characterized in that: It also includes a piston cylinder (17) and a switch top column (18). The piston cylinder (17) is connected to the lifting plate (61). The piston cylinder (17) is provided with a switch top column (18) for contacting the switch of the electric drill (01) to automatically start and close the electric drill (01).

8. The electric drill vertical impact durability testing device according to claim 7, characterized in that: It also includes a sleeve three (19), a corrugated hose (21) and a piston three (20), wherein a switch top column (18) is slidably arranged on the piston cylinder (17), the sleeve three (19) is connected to the test base frame (1), the corrugated hose (21) is connected between the sleeve three (19) and the piston cylinder (17), and the sleeve three (19) is slidably provided with a piston three (20) connected to a connecting frame (22).

9. The electric drill vertical impact durability testing device according to claim 1, characterized in that: It also includes a distance tester (23), which is provided on the test base frame (1) for testing the lifting distance of the electric drill (01), and a sliding pointer is slidably provided on the distance tester (23), and a pull rod (24) is connected between the second piston (8) and the sliding pointer.

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