Device for detecting symmetry degree of excavator arm support

Abstract

The utility model discloses an excavator arm support symmetry degree detection device, which relates to the technical field of detection devices and comprises a detection table, a mounting groove is formed in the middle of the upper surface of the detection table, a clamping assembly is arranged in the mounting groove, and first sliding grooves are formed in the left side and the right side of the upper surface of the detection table. A detection assembly is arranged on the rear side of the upper surface of the detection table and comprises a portal frame, the bottom of the portal frame is slidably connected to the sliding rails in the first sliding grooves, a second sliding groove is formed in the bottom of the upper end of the portal frame, and a two-way lead screw is rotatably connected into the second sliding groove; the surfaces of the two ends of the bidirectional screw rod are in threaded connection with threaded seats, the bottoms of the two threaded seats are in rotary connection with extension rods, pressure sensors are fixedly installed in the bottoms of the extension rods, and detection probes are fixedly connected to the inner sides of the pressure sensors. According to the scheme, the precision is high, tiny size differences can be captured, and more accurate measurement results can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a symmetry detection device for an excavator arm support. Background Art

[0002] An excavator arm is a device on an excavator that controls the movement of the bucket or other tools. It is usually composed of multiple articulated components. It is similar to a human arm and can move and extend in different directions, enabling it to operate at different heights and depths. The length and strength of an excavator arm depends on the size and purpose of the excavator. Larger excavators are usually equipped with longer and more powerful arms to cope with larger operating requirements. The main components of the arm include hydraulic cylinders, hinges, pipes, wires, and sensors.

[0003] In order to ensure the stability and safety of the excavator at work, it is usually necessary to measure the symmetry of the excavator arm support to prevent uneven force distribution when the arm is extended, rotated or carrying heavy objects, which may cause the excavator to tilt, become unstable or even overturn. Commonly used methods are direct observation, caliper measurement and laser scanning. The direct observation and caliper measurement methods rely on the operator's subjective judgment and manual operation, which may be affected by personal experience and skills, and the results may not be accurate and reliable enough. The laser scanning method has high environmental requirements and needs to be scanned in a relatively stable and uniformly lit environment. In addition, the equipment cost is relatively high. In view of the above problems, an excavator arm support symmetry detection device is proposed to solve them. Utility Model Content

[0004] In order to solve the above technical problems, a device for detecting the symmetry of an excavator arm support is provided, which solves the above-mentioned problem that in order to ensure the stability and safety of the excavator during operation, it is usually necessary to measure the symmetry of the excavator arm support to prevent uneven force distribution when the arm is extended, rotated or carrying heavy objects, which may cause the excavator to tilt, become unstable or even overturn. The commonly used methods are generally direct observation, caliper measurement and laser scanning. The direct observation and caliper measurement methods rely on the operator's subjective judgment and manual operation, which may be affected by personal experience and skills, and the results may not be accurate and reliable enough. The laser scanning method has high environmental requirements and needs to be scanned in a relatively stable and uniformly lit environment, and the equipment cost is relatively high.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a symmetry detection device for an excavator arm support, including a detection platform, a mounting groove is opened in the middle of the upper surface of the detection platform, a clamping assembly is arranged inside the mounting groove, first sliding grooves are opened on both sides of the left and right sides of the upper surface of the detection platform, two groups of the first sliding grooves are fixedly connected with slide rails, a detection assembly is arranged on the rear side of the upper surface of the detection platform, the detection assembly includes a gantry, the bottom of the gantry is slidably connected to the slide rail inside the first sliding groove, a second sliding groove is opened at the upper bottom of the gantry, a bidirectional screw rod is rotatably connected inside the second sliding groove, both end surfaces of the bidirectional screw rod are threadedly connected with threaded seats, the bottoms of the two threaded seats are rotatably connected with extension rods, a pressure sensor is fixedly installed inside the bottom of the extension rod, and a detection probe is fixedly connected to the inner side of the pressure sensor.

[0006] Preferably, a second motor is fixedly mounted on the upper left end of the gantry, and an output end of the second motor passes through the left side wall of the second sliding slot and is fixedly connected to the left end of the bidirectional screw rod.

[0007] Preferably, the clamping assembly includes a first rack and a second rack, the first rack is slidably connected to the front end of the mounting groove, and the second rack is slidably connected to the rear end of the mounting groove.

[0008] Preferably, the clamping assembly also includes a first motor, which is fixedly mounted on the bottom of the detection table, and the output end of the first motor passes through the bottom of the mounting groove and is fixedly connected to a driving gear, the driving gear is meshed with the first rack and the second rack, and the first rack and the second rack are distributed in a mirror-symmetrical manner about the center of the driving gear.

[0009] Preferably, the upper sides of the ends of the first rack and the second rack away from the driving gear are fixedly connected to clamping supports, the inner sides of the two clamping supports are rotatably connected to rotating rods, and the inner sides of the two rotating rods are fixedly connected to mounting plates.

[0010] Preferably, a plurality of elastic components are fixedly connected to a side of the mounting plate away from the rotating rod, and flexible clamping blocks are fixedly connected to the inner sides of the plurality of elastic components.

[0011] Preferably, support legs are fixedly connected at the four corners of the bottom of the detection platform, and a cover plate is fixedly connected to the upper surface of the detection platform and the top of the installation slot by screws.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model sets a first motor output end to drive the driving gear to rotate, so that the first rack and the second rack move toward each other synchronously, and the excavator arm support is clamped in a centered manner through the elastic component and the flexible clamping block. The second motor drives the bidirectional lead screw to rotate, so that the threaded seats at both ends move toward each other synchronously. After the detection probe contacts the surface of the excavator arm support, the symmetry of the excavator arm support is detected by observing the readings of the two pressure sensors. It has high precision, can capture tiny size differences, achieve more accurate measurement results, and provide reliable measurement data. The above scheme can realize automatic and rapid measurement, greatly improves measurement efficiency and production efficiency, and at the same time, the structure is simple, the environmental requirements are not high, and the manufacturing cost is low, which is suitable for most small and medium-sized enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the utility model from another viewing angle;

[0015] Figure 3 This is a schematic diagram of the structure of the utility model without the cover plate;

[0016] Figure 4 This is a schematic diagram of the structure of the clamping assembly in the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the detection component in the utility model.

[0018] The numbers in the figure are:

[0019] 1. Inspection table; 2. Support legs; 3. Mounting slot; 4. Clamping assembly; 401. First rack; 402. Second rack; 403. First motor; 404. Driving gear; 405. Clamping support; 406. Rotating rod; 407. Mounting plate; 408. Elastic member; 409. Flexible clamping block; 5. Cover plate; 6. First sliding slot; 7. Slide rail; 8. Inspection assembly; 801. Gantry; 802. Second sliding slot; 803. Bidirectional lead screw; 804. Second motor; 805. Threaded seat; 806. Extension rod; 807. Pressure sensor; 808. Inspection probe. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0021] Reference Figure 1-5As shown, a device for detecting the symmetry of an excavator arm support includes a detection platform 1, a mounting groove 3 is opened in the middle of the upper surface of the detection platform 1, a clamping component 4 is arranged inside the mounting groove 3, first sliding grooves 6 are opened on both sides of the upper surface of the detection platform 1, and slide rails 7 are fixedly connected inside the two groups of first sliding grooves 6, and a detection component 8 is arranged on the rear side of the upper surface of the detection platform 1, and the detection component 8 includes a gantry 801, the bottom of the gantry 801 is slidably connected to the slide rail 7 inside the first sliding groove 6, and the upper bottom of the gantry 801 is opened. A second sliding groove 802 is provided, and a bidirectional screw rod 803 is rotatably connected inside the second sliding groove 802. Both end surfaces of the bidirectional screw rod 803 are threadedly connected with threaded seats 805. The bottoms of the two threaded seats 805 are rotatably connected with extension rods 806. A pressure sensor 807 is fixedly installed inside the bottom of the extension rod 806. A detection probe 808 is fixedly connected to the inner side of the pressure sensor 807. The model of the pressure sensor 807 is preferably a CAZF-Y20 miniature pressure sensor, which has a high dynamic response frequency and high measurement accuracy.

[0022] Specifically, a second motor 804 is fixedly installed on the upper left end of the gantry 801 , and an output end of the second motor 804 passes through the left side wall of the second sliding slot 802 and is fixedly connected to the left end of the bidirectional screw rod 803 .

[0023] Specifically, the clamping assembly 4 includes a first rack 401 and a second rack 402 . The first rack 401 is slidably connected to the front end of the installation slot 3 , and the second rack 402 is slidably connected to the rear end of the installation slot 3 .

[0024] Specifically, the clamping assembly 4 also includes a first motor 403, which is fixedly installed at the bottom of the detection table 1. The output end of the first motor 403 passes through the bottom of the installation groove 3 and is fixedly connected to a driving gear 404. The driving gear 404 is meshed with the first rack 401 and the second rack 402, and the first rack 401 and the second rack 402 are mirror-symmetrically distributed about the center of the driving gear 404. The clamping method of the gear and rack is adopted. The gear rack can provide a large clamping force and can firmly fix the workpiece or parts. At the same time, the gear rack has high precision and controllability, and can achieve precise position control.

[0025] Specifically, the upper sides of the ends of the first rack 401 and the second rack 402 away from the driving gear 404 are fixedly connected with clamping supports 405, the inner sides of the two clamping supports 405 are rotatably connected with rotating rods 406, the inner sides of the two rotating rods 406 are fixedly connected with mounting plates 407, and the rotating rods 406 can realize 360° rotation, thereby adjusting the angle of the mounting plate 407.

[0026] Specifically, a plurality of elastic components 408 are fixedly connected to the side of the mounting plate 407 away from the rotating rod 406, and a flexible clamping block 409 is fixedly connected to the inner side of the plurality of elastic components 408. The elastic components 408 are springs or plastic columns, and the flexible clamping blocks 409 are made of rubber or silicone to avoid damage to the paint on the surface when clamping the excavator arm support.

[0027] Specifically, support legs 2 are fixedly connected at the four corners of the bottom of the test bench 1, and a cover plate 5 is fixedly connected to the upper surface of the test bench 1 and the top of the mounting slot 3 by screws. The cover plate 5 can be disassembled to facilitate maintenance of the internal gear rack.

[0028] Working principle: When conducting the inspection, the excavator arm support is first placed on the upper surface of the inspection platform 1, and the output end of the first motor 403 drives the driving gear 404 to rotate, so that the first rack 401 and the second rack 402 move synchronously toward each other, and the clamping supports 405 at both ends of the first rack 401 and the second rack 402 move synchronously, and the excavator arm support is clamped by the elastic member 408 and the flexible clamping block 409 to ensure that the axis of the excavator arm support is in line with the axis of the gantry 801, and then the angles of the two extension rods 806 are adjusted to the same, and the gantry 801 is slid along the slide rail 7 to the position to be inspected, and the second motor 804 drives the bidirectional screw 803 to rotate, so that the threaded seats 805 at both ends move synchronously toward each other. After the detection probe 808 contacts the surface of the excavator arm support, by observing the readings of the two pressure sensors 807, it is possible to determine whether the two sides of the excavator arm support are consistent and the symmetry of the excavator arm support.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for detecting symmetry of an excavator arm support, comprising a detection platform (1), characterized in that: A mounting groove (3) is provided in the middle of the upper surface of the detection platform (1), a clamping assembly (4) is arranged inside the mounting groove (3), first sliding grooves (6) are provided on both left and right sides of the upper surface of the detection platform (1), two groups of the first sliding grooves (6) are fixedly connected with slide rails (7), a detection assembly (8) is arranged on the rear side of the upper surface of the detection platform (1), the detection assembly (8) comprises a gantry (801), the bottom of the gantry (801) is slidably connected to the slide rails (7) inside the first sliding grooves (6) A second sliding groove (802) is provided at the bottom of the upper end of the gantry (801), and a bidirectional screw rod (803) is rotatably connected inside the second sliding groove (802). Both end surfaces of the bidirectional screw rod (803) are threadedly connected with threaded seats (805), and the bottoms of the two threaded seats (805) are rotatably connected with extension rods (806), and a pressure sensor (807) is fixedly installed inside the bottom of the extension rod (806), and a detection probe (808) is fixedly connected to the inner side of the pressure sensor (807).

2. The excavator arm support symmetry detection device according to claim 1, characterized in that: A second motor (804) is fixedly mounted on the upper left end of the gantry (801), and an output end of the second motor (804) passes through the left side wall of the second sliding slot (802) and is fixedly connected to the left end of the bidirectional screw rod (803).

3. The excavator arm support symmetry detection device according to claim 1, characterized in that: The clamping assembly (4) comprises a first rack (401) and a second rack (402), wherein the first rack (401) is slidably connected to the front end inside the installation slot (3), and the second rack (402) is slidably connected to the rear end inside the installation slot (3).

4. The excavator arm support symmetry detection device according to claim 3, characterized in that: The clamping assembly (4) also includes a first motor (403), the first motor (403) is fixedly mounted on the bottom of the detection platform (1), the output end of the first motor (403) passes through the bottom of the mounting groove (3) and is fixedly connected to a driving gear (404), the driving gear (404) is meshed with the first rack (401) and the second rack (402), and the first rack (401) and the second rack (402) are distributed in a mirror-symmetrical manner about the center of the driving gear (404).

5. The excavator arm support symmetry detection device according to claim 4, characterized in that: The upper sides of the ends of the first rack (401) and the second rack (402) away from the driving gear (404) are fixedly connected with a clamping support (405), the inner sides of the two clamping supports (405) are rotatably connected with a rotating rod (406), and the inner sides of the two rotating rods (406) are fixedly connected with a mounting plate (407).

6. The excavator arm support symmetry detection device according to claim 5, characterized in that: A plurality of elastic components (408) are fixedly connected to one side of the mounting plate (407) away from the rotating rod (406), and a flexible clamping block (409) is fixedly connected to the inner side of the plurality of elastic components (408).

7. The excavator arm support symmetry detection device according to claim 1, characterized in that: Support legs (2) are fixedly connected at the four corners of the bottom of the detection platform (1), and a cover plate (5) is fixedly connected to the upper surface of the detection platform (1) and the top of the installation groove (3) by screws.

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