Crane trolley ball hinge load testing device

Abstract

The utility model relates to the technical field of hoist, and disclose hoist trolley ball hinge load test device, solve the problem that the background art has proposed, it includes motor speed reducer assembly, motor speed reducer assembly passes through frequency converter control rotating speed, crankshaft, the crankshaft is driven rotation by motor speed reducer assembly, and its eccentric end is equipped with crank, crankshaft pedestal is used for supporting the crankshaft, crank connecting rod, one end of crank connecting rod is hinged with the crank, and the other end is connected upper cover through joint bearing, tension sensor, tension sensor sets up on the crank connecting rod, ball hinge test piece, ball hinge test piece is connected with the upper cover, base, the base is used for supporting whole test device, pull rod subassembly, pull rod subassembly connects lower support and upper cover, shaft coupling, the utility model discloses, can only need a set of test device to realize the effect of the test of the stress, cycle number, temperature and so on numerical value of test piece simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically a crane trolley ball hinge load testing device. Background Technology

[0002] Currently, load testing of the ball joint of a crane trolley typically uses a single-dimensional loading method, which cannot simultaneously simulate the combined load in the vertical and horizontal directions, resulting in a significant deviation between the test results and the actual working conditions.

[0003] In addition, existing technologies lack real-time monitoring capabilities for stress, cycle count, and temperature of the test specimen, resulting in low testing efficiency and incomplete data. To address this, we propose a crane trolley ball joint load testing device. Summary of the Invention

[0004] To address the problems raised in the background art, this utility model provides the following technical solution: a crane trolley ball joint load testing device, comprising a motor reducer assembly, wherein the motor reducer assembly controls the rotational speed via a frequency converter; A crankshaft, which is driven to rotate by the motor reducer assembly, has a crank at its eccentric end; Crankshaft housing, used to support the crankshaft; A crank connecting rod, one end of which is hinged to the crank, and the other end of which is connected to the upper cover via a spherical bearing; A tension sensor is mounted on the crank connecting rod; A ball joint test piece, wherein the ball joint test piece is connected to the upper cover; The base, which supports the entire test apparatus A tie rod assembly that connects the lower support and the upper cover; A coupling connecting the motor reducer assembly and the crankshaft; A counter, mounted on the crankshaft, is used to record the number of crankshaft rotation cycles; A temperature sensor, wherein the temperature sensor is disposed at the ball joint mounting position; The display terminal is connected to the signals of each sensor. The upper cover can simultaneously generate a combined vertical and horizontal motion under the rotational drive of the crankshaft.

[0005] Preferably, the display terminal is a touch screen display terminal or an LCD screen, which can display parameters such as force, temperature and number of cycles of the ball joint test piece in real time, and has data storage and export functions, providing an intuitive operation interface, and facilitating the recording and subsequent analysis of test data.

[0006] Preferably, a spherical bearing is provided on the crank connecting rod. The spherical bearing is made of a self-lubricating material and is used to realize multi-directional movement. The use of self-lubricating material reduces maintenance requirements and improves the reliability and service life of the device.

[0007] Preferably, the base is made of high-strength steel to ensure the stability and load-bearing capacity of the entire test device.

[0008] Preferably, the crank and the eccentric end of the crankshaft are connected by a key or by welding to ensure the reliability and strength of the connection.

[0009] Preferably, the counter is a photoelectric counter or a magnetoelectric counter to ensure the accuracy and reliability of the counting.

[0010] Compared with the prior art, the beneficial effects of this utility model are: During operation, the ball joint test piece is installed on the top cover, ensuring it is securely fixed. The connections of all sensors and counters are checked for proper functioning. The display terminal is started, and the test preparation interface is accessed. Test parameters are set, and the motor reducer assembly is started. The speed is adjusted to the set speed via the frequency converter. The motor reducer assembly drives the crankshaft to rotate via the coupling. The eccentric end of the crankshaft converts the rotational motion into the reciprocating motion of the top cover via the crank and crank-connecting rod. Driven by the crankshaft, the top cover generates a combined motion in the vertical and horizontal directions, simulating the actual working conditions of a crane trolley ball joint. The tension sensor monitors the force on the ball joint test piece in real time and transmits the data to the display terminal. The temperature sensor monitors the temperature change of the ball joint test piece in real time and transmits the data to the display terminal. The counter records the number of crankshaft rotation cycles. The data is transmitted to a display terminal, which displays parameters such as stress, temperature, and number of cycles of the ball joint test piece in real time and stores the test data. After the set test time or number of cycles is reached, the motor and reducer assembly automatically stops running, and the display terminal generates a test report, including parameters such as stress, temperature, and number of cycles of the ball joint test piece. Users can export the test data through the display terminal for further analysis and evaluation. Based on the data in the test report, the performance of the ball joint test piece, such as load capacity, durability, and temperature stability, can be analyzed. By comparing data under different test conditions, the performance changes of the ball joint test piece can be evaluated. Based on the test results, the ball joint design can be optimized or adjusted. Only one test device is needed to simultaneously test the stress, number of cycles, temperature, and other values ​​of the test piece. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1This is a schematic diagram of the ball joint load test device of this utility model; Figure 2 This is a schematic diagram showing the outline dimensions of the ball joint load testing device of this utility model; Figure 3 This is a schematic diagram of the tie rod and crankshaft structure of the ball joint load testing device of this utility model; In the diagram: 1. Motor reducer assembly; 2. Crankshaft; 3. Crank connecting rod; 4. Ball joint test piece; 5. Top cover; 6. Tension sensor; 7. Tie rod assembly; 8. Lower support; 9. Crank; 10. Base; 11. Coupling; 12. Crankshaft seat. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0013] Depend on Figure 1-3 As shown, this utility model includes a motor reducer assembly 1, and the motor reducer assembly 1 controls the speed through a frequency converter; Crankshaft 2 is driven to rotate by motor reducer assembly 1, and its eccentric end is provided with crank 9; Crankshaft seat 12 is used to support crankshaft 2; Crank connecting rod 3, one end of which is hinged to crank 9, and the other end is connected to the upper cover 5 through a spherical bearing; Tension sensor 6 is mounted on crank connecting rod 3; Ball joint test piece 4, which is connected to the upper cover 5; Base 10, base 10 is used to support the entire test device Pull rod assembly 7 connects the lower support 8 and the upper cover 5; Coupling 11 connects the motor reducer assembly 1 and the crankshaft 2; A counter, mounted on crankshaft 2, is used to record the number of crankshaft rotation cycles; Temperature sensor, the temperature sensor is set at the ball joint mounting position; The display terminal is connected to the signals of each sensor. Among them, the upper cover 5 can generate a compound motion in both vertical and horizontal directions simultaneously under the rotational drive of the crankshaft 2.

[0014] The display terminal is a touch screen or LCD screen, which can display the force, temperature and number of cycles of the ball joint test piece 4 in real time, and has data storage and export functions. It provides an intuitive operation interface and facilitates the recording and subsequent analysis of test data.

[0015] The crank connecting rod 3 is equipped with a spherical bearing. The spherical bearing is made of self-lubricating material and is used to realize multi-directional movement. The use of self-lubricating material reduces maintenance requirements and improves the reliability and service life of the device.

[0016] The base 10 is made of high-strength steel to ensure the stability and load-bearing capacity of the entire test device.

[0017] The crank 9 is connected to the eccentric end of the crankshaft 2 by key connection or welding to ensure the reliability and strength of the connection.

[0018] The counter is either a photoelectric counter or a magnetoelectric counter, ensuring the accuracy and reliability of the count.

[0019] Working Principle: During operation, the ball joint test piece 4 is installed on the upper cover 5, ensuring it is securely fixed. The connections of the tension sensor, temperature sensor, and counter are checked for proper functioning. The display terminal is started, and the test preparation interface is accessed. Test parameters such as motor speed and test time are set. The motor reducer assembly 1 is started, and the speed is adjusted to the set speed via the frequency converter. The motor reducer assembly drives the crankshaft 2 to rotate through the coupling 11. The eccentric end of the crankshaft converts the rotational motion into the reciprocating motion of the upper cover 5 through the crank 9 and crank connecting rod 3. Driven by the crankshaft, the upper cover 5 generates a combined motion in the vertical and horizontal directions, simulating the actual working conditions of the ball joint of a crane trolley. The tension sensor 6 monitors the force on the ball joint test piece 4 in real time and transmits the data to the display terminal. The temperature sensor monitors the temperature change of the ball joint test piece in real time and transmits the data to the display terminal. The counter records the number of crankshaft rotation cycles and transmits the data to the display terminal. The display terminal displays parameters such as force, temperature, and number of cycles of the ball joint test piece in real time and stores the test data. After the set test time or number of cycles is reached, the motor reducer assembly 1 automatically stops running, and the display terminal generates a test report, including parameters such as force, temperature, and number of cycles of the ball joint test piece. Users can export the test data through the display terminal for further analysis and evaluation. Based on the data in the test report, the performance of the ball joint test piece, such as load capacity, durability, and temperature stability, can be analyzed. By comparing data under different test conditions, the performance changes of the ball joint test piece can be evaluated. Based on the test results, the ball joint design can be optimized or adjusted. Only one test device is needed to simultaneously test the force, number of cycles, temperature, and other values ​​of the test piece.

[0020] Test bench technical parameters: The test environment temperature was 60℃, the static load was 650KN, the motor model was Y250M−6, the rated power of the motor was 37KW, the rated speed of the motor was 980r / min, the reduction ratio of the reducer was 1:29, the maximum output torque of the reducer was 10440N.m, the crankshaft eccentricity was 25mm, the crankshaft tension was 130KN, the maximum working torque of the crankshaft was 3250N.m, the crankshaft speed was 10~33r / min, the range of the tension sensor was 200KN, the maximum deformation of the disc spring assembly was fz13.15mm, and the maximum load of the disc spring assembly was P556KN.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crane trolley ball hinge load testing device, characterized in that: It includes a motor reducer assembly (1), the speed of which is controlled by a frequency converter; Crankshaft (2), which is driven to rotate by the motor reducer assembly (1), and has a crank (9) at its eccentric end; Crankshaft seat (12) for supporting the crankshaft (2); Crank connecting rod (3), one end of which is hinged to the crank (9), and the other end is connected to the upper cover (5) through a spherical bearing; A tension sensor (6) is mounted on the crank connecting rod (3); A ball joint test piece (4) is connected to the upper cover (5); A base (10) is used to support the entire test apparatus; A tie rod assembly (7) is connected to the lower support (8) and the upper cover (5). Coupling (11) connects the motor reducer assembly (1) and the crankshaft (2). A counter, which is mounted on the crankshaft (2), is used to record the number of crankshaft rotation cycles; A temperature sensor, wherein the temperature sensor is disposed at the ball joint mounting position; The display terminal is connected to the signals of each sensor. The upper cover (5) can generate a combined vertical and horizontal motion under the rotational drive of the crankshaft (2).

2. The crane trolley ball hinge load testing device according to claim 1, characterized in that: The display terminal is a touch screen display terminal or an LCD screen, which can display the force, temperature and number of cycles of the ball joint test piece (4) in real time, and has data storage and export functions.

3. The crane trolley ball hinge load testing device according to claim 2, characterized in that: The crank connecting rod (3) is provided with a spherical bearing, which is made of a self-lubricating material.

4. The crane trolley ball hinge load testing device according to claim 3, characterized in that: The base (10) is made of high-strength steel.

5. The crane trolley ball hinge load testing device according to claim 4, characterized in that: The crank (9) is connected to the eccentric end of the crankshaft (2) by key connection or welding.

6. The crane trolley ball hinge load testing device according to claim 5, characterized in that: The counter is a photoelectric counter or a magnetoelectric counter.

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