A three-in-one detection device for lifting table legs

Abstract

The present invention provides a three-in-one detection device for lifting table legs, which belongs to the technical field of lifting table detection equipment, including: the frame is provided with a lower base, an upper base and a test drive mechanism that can drive the lifting table legs to perform lifting actions, the upper base is located above the lower base; the noise testing mechanism is used to collect noise data when the lifting table legs are lifted and lowered; the jitter testing mechanism is used to collect jitter data when the lifting table legs are lifted and lowered; a displacement testing mechanism, the displacement testing mechanism is installed on the upper base, and the displacement testing mechanism can push the raised lifting table legs with a preset thrust and collect their displacement data. The beneficial effects of the present invention are: the device can detect the lifting table legs individually, and the device has three detection functions, which can perform noise testing, jitter testing and displacement testing during the lifting process of the table legs, so the efficiency is very high, and the purpose of automatic detection of the table legs is quickly achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of lift table detection equipment and relates to a three-in-one detection device for lift table legs. Background Art

[0002] An electric lift table is a table with a lifting function. The legs of an electric lift table have a complex structure and are an important component for realizing the lifting function. A lift table generally has four legs. As long as there is a problem with one leg, it will affect the use of the entire lift table. Therefore, the lift table legs need to undergo a series of tests after assembly.

[0003] At present, the inspection of the legs of lift tables is usually carried out manually, and very few are carried out through special inspection devices. For example, an invention patent with application number CN202110343237.X discloses a lift table leg performance inspection device and inspection method, which includes a detection stand for installing the lift table legs to be inspected; a connecting plate, which is connected to the lift table legs to be inspected and can be raised and lowered synchronously with the lift table legs, and a connecting part is provided on the connecting plate; a flexible part, which is a flat soft mesh arrangement, and the flexible part is arranged between two adjacent lift table legs to be inspected, and the flexible part is respectively connected to the connecting parts of the connecting plates on the two adjacent lift table legs to be inspected, and the plane where the flexible part is located is parallel to the horizontal plane; a spirit level, which is placed on the top of the flexible part, and is used to detect the synchronization of the lift table legs to be inspected when rising or falling.

[0004] The above-mentioned detection device actually tests the four legs of the lift table at the same time. Since the lift table legs have all been installed, they need to be disassembled again once a problem is detected. However, the existing detection equipment cannot test a single lift table leg, and the detection items are not comprehensive enough, and it is impossible to test the three important performances of the lift table legs at one time. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a three-in-one detection device for lifting table legs.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A three-in-one detection device for lifting table legs, comprising:

[0007] A frame, the frame being provided with a lower base, an upper base, and a test drive mechanism capable of driving the lifting table legs to perform lifting actions, the upper base being located above the lower base;

[0008] A noise testing mechanism, the noise testing mechanism is used to collect noise data when the lifting table legs are raised and lowered;

[0009] A jitter testing mechanism, the jitter testing mechanism is used to collect jitter data when the lifting table legs are raised or lowered;

[0010] A displacement testing mechanism is installed on the upper base, and the displacement testing mechanism can push the raised lifting table legs with a preset thrust and collect their displacement data.

[0011] Preferably, it also includes a conveying mechanism, which includes a sliding seat, a positioning tool and a translation drive element. The sliding seat is movably connected to the lower base, the positioning tool is connected to the sliding seat, and the translation drive element is installed on the lower base. The sliding seat is linked to the translation drive element, and the translation drive element can drive the sliding seat to slide to a clamping station or a testing station.

[0012] Preferably, the noise testing mechanism includes a decibel meter, which is close to the lower base to collect noise data.

[0013] Preferably, the vibration testing mechanism includes a vibration sensor, which can be attached to the lifting table legs to collect vibration data.

[0014] Preferably, the displacement testing mechanism includes four pushing units, which are connected to the upper base, and two of the pushing units are arranged in front and back correspondences, and the other two pushing units are arranged in left and right correspondences, and the gaps between the four pushing units are arranged in upper and lower correspondences with the test stations.

[0015] Preferably, the displacement testing mechanism also includes two distance measuring sensors, which are respectively located on adjacent sides of the upper base. One distance measuring sensor is used to measure the front and rear displacement data of the lifting table legs, and the other distance measuring sensor is used to measure the left and right displacement data of the lifting table legs.

[0016] Preferably, the pushing unit includes a pushing drive element, a force sensor and a pushing head, the pushing drive element is connected to the upper base, the pushing head is linked to the pushing drive element through the force sensor, the pushing drive element can push the leg tube of the lifting table leg through the pushing head and collect displacement data through the ranging sensor.

[0017] Preferably, the upper base is connected to the frame in a liftable manner, and the frame is further provided with a lifting drive element, a transmission element and a screw, the screw is arranged along the lifting direction of the upper base, and a nut seat is provided on the edge of the upper base, the screw is linked to the lifting drive element through the transmission element, and the nut seat is linked to the screw, and the lifting drive element can drive the screw to rotate, thereby driving the upper base to rise and fall through the nut seat.

[0018] Preferably, the lower base is provided with a lifting and pressing plate, and the lifting and pressing plate can be lifted and lowered above the testing station.

[0019] Preferably, a silent room is further included, and the rack is located in the silent room.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The device can detect the lifting table legs separately, and the device has three detection functions. It can perform noise test, jitter test and displacement test during the lifting process of the table legs, so the efficiency is very high and the purpose of automatic detection of table legs is achieved quickly.

[0022] 2. This three-in-one detection method can very efficiently and comprehensively detect a single lift table leg, and thus determine whether the lift table leg has quality problems or assembly problems based on the detection data.

[0023] 3. The device also includes a silent room, and the frame is located in the silent room. Since the entire three-in-one detection device is located in the silent room, the accuracy and precision of the noise test can be greatly improved, and noise interference in the workshop can be avoided.

[0024] 4. The four pushing units are respectively located in the front, back, left and right of the end of the leg tube, and the pushing units can push the end of the leg tube of the lifting table leg with a preset thrust, thereby displacing the leg tube; and it should be pointed out that the four pushing units push the lifting table leg in turn, thereby measuring the displacement data of the lifting table leg when it is subjected to thrust in different directions.

[0025] 5. The height position of the displacement test mechanism can be adjusted by controlling the lifting of the upper base through the lifting drive element, so that the displacement test mechanism corresponds to the end of the leg tube of the raised lifting table leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the three-in-one detection device of the present invention.

[0027] Figure 2 This is a schematic diagram of the three-in-one detection device of the present invention located in a silent room.

[0028] Figure 3 It is a structural schematic diagram of the lower base and conveying mechanism of the present invention.

[0029] Figure 4 This is a schematic diagram of the lifting table legs of the present invention when they are installed on the conveying mechanism.

[0030] Figure 5 It is a schematic diagram of the connection relationship between the upper base and the displacement testing mechanism of the present invention.

[0031] Figure 6 It is a top view of the displacement testing mechanism of the present invention.

[0032] Figure 7 It is a structural schematic diagram of the pushing unit of the present invention.

[0033] In the figure, 100, frame; 110, lower base; 120, upper base; 130, lifting drive element; 140, transmission element; 150, screw; 160, nut seat; 170, lifting and lowering plate; 200, conveying mechanism; 210, sliding seat; 220, positioning tool; 230, translation drive element; 300, decibel tester; 400, vibration sensor; 500, pushing unit; 510, pushing drive element; 520, force sensor; 530, pushing head; 600, distance sensor; 700, silent room. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0035] like Figure 1-7 As shown, a three-in-one detection device for a lifting table leg includes: a frame 100, a noise testing mechanism, a vibration testing mechanism and a displacement testing mechanism (not marked in the figure), the frame 100 is provided with a lower base 110, an upper base 120 and a test driving mechanism that can drive the lifting table leg to perform a lifting action, and the upper base 120 is located above the lower base 110; the noise testing mechanism is used to collect noise data when the lifting table leg is lifted or lowered; the vibration testing mechanism is used to collect vibration data when the lifting table leg is lifted or lowered; the displacement testing mechanism is installed on the upper base 120, and the displacement testing mechanism can push the raised lifting table leg with a preset thrust and collect its displacement data.

[0036] The device can perform noise testing, vibration testing and displacement testing during the process of one round of lifting of the lifting table legs. That is, the device integrates three test items. By testing the above three items, it can be measured whether the lifting table legs meet the standards. Among them, the noise test can detect whether the motor in the lifting table legs is operating normally, the vibration test can detect whether the vibration data of the leg tube of the lifting table legs is within the standard range when the lifting table legs are lifted, and the displacement test can detect whether the displacement range of the lifting table legs when they are subjected to a certain thrust after being lifted is within the standard range. Therefore, this three-in-one detection method can very efficiently and comprehensively detect a single lifting table leg, and thus determine whether the lifting table legs have quality problems or assembly problems based on the detection data.

[0037] It should be noted that the lifting table leg is an important component of the lifting table. The lifting table leg is equipped with a motor and at least two retractable leg tubes. The motor can drive the leg tubes to retract and retract. When testing the lifting table legs, in addition to testing the height during lifting, it is also necessary to test whether there will be violent shaking during the lifting process, and whether the lifting table legs will be unstable after rising. If a single lifting table leg is tested, it can effectively prevent unqualified table legs from being assembled into the product, greatly avoiding subsequent losses in manpower and material resources.

[0038] The upper base 120 is located above the lower base 110, and the height of the upper base 120 corresponds to the maximum lift height of the leg tube of the lift table leg. During testing, the lift table leg is fixed to the lower base 110, and the leg tube of the lift table leg can move toward the upper base 120. The test drive mechanism is preferably a drive system, which can be electrically connected to the lift table leg, so that the lift table leg is powered and operates and performs a lifting action according to a set program. That is, the test drive mechanism can raise and lower the leg tube of the lift table leg. The noise test mechanism collects the maximum decibel value during the lifting process, and the vibration test mechanism collects the maximum vibration value during the lifting process. When the lift table leg is fully raised, the displacement test mechanism pushes the leg with a preset thrust to detect the displacement of the lift table leg when subjected to a certain thrust. The device can test the lift table leg individually and has three detection functions: noise testing, vibration testing, and displacement testing during the lifting process. Therefore, it is very efficient and quickly achieves the purpose of automated testing of the table legs.

[0039] like Figure 1-4 As shown, the device also includes a conveying mechanism 200, which includes a sliding seat 210, a positioning tool 220 and a translation drive element 230. The sliding seat 210 is movably connected to the lower base 110, the positioning tool 220 is connected to the sliding seat 210, and the translation drive element 230 is installed on the lower base 110. The sliding seat 210 is linked to the translation drive element 230, and the translation drive element 230 can drive the sliding seat 210 to slide to a clamping station (not shown in the figure) or a testing station (not shown in the figure).

[0040] The conveying mechanism 200 is used to transfer the lifting table legs from the clamping station to the testing station to realize automatic loading, and can also transfer the lifting table legs from the testing station to the clamping station to realize automatic unloading. Among them, the translation drive element 230 is set as a screw motor, and a horizontal guide rail is provided on the lower base 110. The sliding seat 210 slides on the lower base 110 through the horizontal guide rail. The screw motor can drive the sliding seat 210 to move along the horizontal guide rail. The positioning tooling 220 is used to position the lifting table legs. The lifting table legs can be installed on the positioning tooling 220, and then loaded or unloaded by the sliding seat 210.

[0041] The lower base 110 is provided with a lifting and pressure plate 170, and the lifting and pressure plate 170 is located above the test station in a liftable manner. The lifting and pressure plate 170 can be lifted and lowered. When the sliding seat 210 drives the lifting table legs to the test station, the lifting and pressure plate 170 presses the lifting table legs, thereby fixing the lifting table legs for facilitating three-in-one testing.

[0042] like Figure 1-4 As shown, the noise testing mechanism includes a decibel meter 300, which is close to the lower base 110 to collect noise data. The decibel meter 300 is a commonly used sensor for detecting decibels, which can collect the sound level when the lifting table legs are raised and lowered and feed it back to the system.

[0043] In order to avoid noise interference in the noise test, the device also includes a quiet room 700, and the rack 100 is located in the quiet room 700. Since the entire three-in-one detection device is located in the quiet room 700, the accuracy and precision of the noise test can be greatly improved, and noise interference in the workshop can be avoided.

[0044] The vibration testing mechanism includes a vibration sensor 400 , which can be attached to a lifting table leg to collect vibration data.

[0045] The vibration sensor 400 is a sensor that can detect vibration amplitude. During the actual detection process, the vibration sensor 400 can be pasted or adsorbed on the leg tube of the lifting table leg to record and collect the vibration data of the leg tube of the lifting table leg.

[0046] like Figure 1 、 Figure 5-7 As shown, the displacement testing mechanism includes four pushing units 500, which are connected to the upper base 120, and two of the pushing units 500 are arranged correspondingly in the front and back, and the other two pushing units 500 are arranged correspondingly in the left and right, and the gaps between the four pushing units 500 are arranged correspondingly in the upper and lower directions of the test stations.

[0047] The upper base 120 is preferably a square frame structure, and the upper base 120 is mounted on the frame 100. The four pushing units 500 are respectively installed on the four sides of the upper base 120. When the leg tube of the lifting table leg is raised, the four pushing units 500 are respectively located in front, behind, left and right of the end of the leg tube, and the pushing unit 500 can push the end of the leg tube of the lifting table leg with a preset thrust, thereby displacing the leg tube; and it should be pointed out that the four pushing units 500 push the lifting table leg in turn, so as to measure the displacement data of the lifting table leg when it is subjected to thrust in different directions.

[0048] The pushing unit 500 includes a pushing drive element 510, a force sensor 520 and a pushing head 530. The pushing drive element 510 is connected to the upper base 120. The pushing head 530 is linked to the pushing drive element 510 through the force sensor 520. The pushing drive element 510 can push the leg tube of the lifting table leg through the pushing head 530 and collect displacement data through the distance measuring sensor 600.

[0049] The pushing drive element 510 is preferably an electric push rod, which can push the lifting table legs through the push head 530, wherein the force sensor 520 is used to collect the thrust data of pushing the lifting table legs. When the force sensor 520 detects that the thrust of the electric push rod reaches the set value, the electric push rod stops, and the distance sensor 600 collects the corresponding displacement data. Therefore, it should be noted here that the displacement testing mechanism actually tests the displacement data of the leg tube when the thrust of the pushing unit 500 reaches the set value when pushing the lifting table legs.

[0050] The displacement testing mechanism also includes two distance measuring sensors 600, which are respectively located on adjacent sides of the upper base 120. One distance measuring sensor 600 is used to measure the front and rear displacement data of the lifting table legs, and the other distance measuring sensor 600 is used to measure the left and right displacement data of the lifting table legs.

[0051] It should be noted here that the distance measuring sensor 600 located on the left or right side can detect the displacement data of the lifting table leg when it moves forward and backward, and the distance measuring sensor 600 located on the front or rear side can detect the displacement data of the table leg when it moves left and right. For example, when the pushing unit 500 located on the front or rear side pushes the lifting table leg, the distance measuring sensor 600 located on the left or right side of the lifting table leg takes measurement.

[0052] like Figure 1 、 Figure 5-7 As shown, the upper base 120 is connected to the frame 100 in a liftable manner. The frame 100 is also provided with a lifting drive element 130, a transmission element 140 and a screw 150. The screw 150 is arranged along the lifting direction of the upper base 120. A nut seat 160 is provided on the edge of the upper base 120. The screw 150 is linked to the lifting drive element 130 through the transmission element 140. The nut seat 160 is linked to the screw 150. The lifting drive element 130 can drive the screw 150 to rotate, thereby driving the upper base 120 to rise and fall through the nut seat 160.

[0053] The lifting drive element 130 is preferably a reduction motor, and the transmission element 140 is preferably two meshing bevel gears. The transmission element 140 can transmit the torque of the lifting drive element 130 to the screw 150. When the screw 150 rotates, it can drive the upper base 120 to rise and fall, thereby adjusting the position of the upper base 120; by controlling the lifting and falling of the upper base 120 through the lifting drive element 130, the height position of the displacement testing mechanism can be adjusted, so that the displacement testing mechanism corresponds to the end of the leg tube of the raised lifting table leg.

[0054] Specifically, during adjustment, the position of the upper base 120 can be adjusted according to the lifting stroke of the lifting table leg to be tested, and the lifting drive element 130 drives the upper base 120 to slide, so that each pushing unit 500 of the displacement testing mechanism is facing the end of the leg tube.

[0055] like Figure 1-7 As shown, the complete working process of the device is as follows: the sliding seat 210 first moves to the clamping station, the operator puts the lifting table leg to be tested upside down on the positioning fixture 220, the test drive mechanism is connected to the lifting table leg so that the lifting table leg is powered, and then the vibration sensor 400 is attached to the lifting table leg, and then the sliding seat 210 moves the lifting table leg to the test station, the lifting pressure plate 170 descends and presses the motor seat of the lifting table leg, and then the test drive mechanism drives the lifting table leg to rise. When the lifting table leg rises to the limit, the four pushing units 500 push the lifting table leg in turn, so that the lifting table leg moves in turn forward, backward, left and right, and the distance sensor 600 measures the displacement data of the lifting table leg when it is subjected to a preset thrust. After the measurement is completed, the lifting table leg descends and resets, the decibel tester 300 collects noise data, the vibration sensor 400 collects jitter data, and finally feeds back to the human-computer interaction interface, so as to efficiently and comprehensively test a single lifting table leg.

[0056] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, terms such as "first," "second," and "an" in the present invention are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" 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, unless otherwise clearly specified and limited.

[0059] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A three-in-one detection device for lifting table legs, characterized in that: include: A frame (100), the frame (100) being provided with a lower base (110), an upper base (120), and a test drive mechanism capable of driving the lifting table legs to perform a lifting action, the upper base (120) being located above the lower base (110); A noise testing mechanism, the noise testing mechanism is used to collect noise data when the lifting table legs are raised and lowered; A jitter testing mechanism, the jitter testing mechanism is used to collect jitter data when the lifting table legs are raised or lowered; A displacement testing mechanism, the displacement testing mechanism being installed on the upper base (120), the displacement testing mechanism being capable of pushing the raised lifting table legs with a preset thrust and collecting displacement data thereof; The displacement testing mechanism comprises four pushing units (500), the pushing units (500) being connected to the upper base (120), two of the pushing units (500) being arranged front to back, and the other two pushing units (500) being arranged left to right, and the gaps between the four pushing units (500) being arranged up and down corresponding to the test stations; The displacement testing mechanism further comprises two distance measuring sensors (600), the two distance measuring sensors (600) being respectively located on adjacent sides of the upper base (120), one distance measuring sensor (600) being used to measure front-to-back displacement data of the lifting table legs, and the other distance measuring sensor (600) being used to measure left-to-right displacement data of the lifting table legs.

2. The three-in-one detection device for lifting table legs according to claim 1, characterized in that: The invention also includes a conveying mechanism (200), wherein the conveying mechanism (200) includes a sliding seat (210), a positioning tool (220) and a translation drive element (230), wherein the sliding seat (210) is movably connected to the lower base (110), the positioning tool (220) is connected to the sliding seat (210), the translation drive element (230) is installed on the lower base (110), the sliding seat (210) is linked to the translation drive element (230), and the translation drive element (230) can drive the sliding seat (210) to slide to a clamping station or a testing station.

3. The three-in-one detection device for lifting table legs according to claim 1, characterized in that: The noise testing mechanism includes a decibel tester (300), and the decibel tester (300) is close to the lower base (110) to collect noise data.

4. The three-in-one detection device for lifting table legs according to claim 1, characterized in that: The vibration testing mechanism comprises a vibration sensor (400), and the vibration sensor (400) can be placed against a lifting table leg to collect vibration data.

5. The three-in-one detection device for lifting table legs according to claim 1, characterized in that: The pushing unit (500) includes a pushing drive element (510), a force sensor (520) and a pushing head (530). The pushing drive element (510) is connected to the upper base (120). The pushing head (530) is linked to the pushing drive element (510) via the force sensor (520). The pushing drive element (510) can push the leg tube of the lifting table leg through the pushing head (530) and collect displacement data through the distance measuring sensor (600).

6. The three-in-one detection device for lifting table legs according to claim 1, characterized in that: The upper base (120) is connected to the frame (100) in a liftable manner. The frame (100) is further provided with a lifting drive element (130), a transmission element (140) and a screw (150). The screw (150) is arranged along the lifting direction of the upper base (120). A nut seat (160) is provided on the edge of the upper base (120). The screw (150) is linked to the lifting drive element (130) through the transmission element (140). The nut seat (160) is linked to the screw (150). The lifting drive element (130) can drive the screw (150) to rotate, thereby driving the upper base (120) to rise and fall through the nut seat (160).

7. The three-in-one detection device for lifting table legs according to claim 2, characterized in that: The lower base (110) is provided with a lifting and pressing plate (170), and the lifting and pressing plate (170) is located above the testing station in a liftable manner.

8. The three-in-one detection device for lifting table legs according to claim 1, characterized in that: It also includes a silent room (700), wherein the rack (100) is located in the silent room (700).

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