Portable static load device and method

Abstract

The invention discloses a portable static load device and method, and relates to the technical field of ladders, the portable static load device comprises at least one group of pedal blocks and clamping units arranged on the inner sides of the pedal blocks; the pedal block is limited by the clamping unit to ascend and descend on the lifting rod; the static load unit comprises a box body, handles arranged on the two sides of the end face of the box body, a pulley block arranged at the bottom of the box body, a driving assembly arranged on the inner side of the box body and a lifting rod arranged on the inner side of the driving assembly. The beneficial effects of the invention are that the device can flexibly adjust the distance between the pedal blocks through the design of the variable pitch grooves, so that the detection personnel with different heights can operate safely and comfortably, and the detection efficiency and safety are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ladders, and in particular to a portable static loading device and method. Background Art

[0002] Traditional ladder static load devices are typically bulky, and the limited available space in laboratories makes them difficult to meet the quality control requirements of products after mass production. Existing devices are mostly fixed designs, unable to flexibly adjust to different ladder models or specifications. Once installed, they are difficult to disassemble and move, resulting in low equipment utilization and poor adaptability. The spacing between ladder steps must be manually adjusted, a process that is not only inefficient but also poses a risk to inspectors due to improper operation or ladder quality issues, potentially endangering their personal safety by stepping on empty steps. Precisely adjusting the spacing between each ladder step is difficult. Summary of the Invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a convenient static load device that can solve the problem of risk to the inspector caused by the pedal block not stepping on the gear.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a portable static load device, comprising at least one set of pedal blocks and a clamping unit provided on the inner side of the pedal blocks;

[0006] The pedal block is restricted by the clamping unit in rising and falling on the lifting rod;

[0007] The static load unit includes a box body, handles arranged on both sides of the box body end surface, a pulley set arranged at the bottom of the box body, a driving component arranged inside the box body, and a lifting rod arranged inside the driving component.

[0008] As a preferred solution of the portable static load device of the present invention, the pedal block includes pedals arranged on both sides thereof, a hanging groove arranged through the inner side thereof, and a limiting hole arranged through the end surface thereof.

[0009] As a preferred solution of the portable static load device of the present invention, the clamping unit includes a clamping seat, a pin block embedded in one side of the clamping seat, and a limiting rod arranged on one side of the limiting hole.

[0010] As a preferred solution of the portable static load device of the present invention, the driving assembly includes a battery arranged inside the box, a fixing bracket arranged outside the battery, and a motor arranged on one side of the battery.

[0011] As a preferred solution of the portable static load device of the present invention, wherein: the lifting rod includes variable pitch slots provided in an array;

[0012] And the pitch-changing slot cooperates with the pin block.

[0013] As a preferred solution of the portable static load device of the present invention, the clamping seat includes a shaft ring sleeved on the outer side of the lifting rod, and a limit block protruding from one side of the shaft ring.

[0014] As a preferred solution of the portable static load device of the present invention, wherein: the hanging slot includes a through slot opened on one side thereof, and a first inclined block arranged inside the through slot;

[0015] The pedal block further comprises a lap groove formed at the bottom thereof.

[0016] As a preferred solution of the portable static load device of the present invention, wherein: the clamping seat includes a bearing seat provided at the bottom thereof;

[0017] The limiting block includes a plug-in hole opened at the bottom thereof and an avoidance groove arranged at the top of the plug-in block.

[0018] As a preferred solution of the portable static load device of the present invention, the pin block includes an offset pin plugged into the pitch-changing slot, and a second inclined block provided on one side of the offset pin;

[0019] And a spring is sleeved on the offset.

[0020] To solve the above technical problems, the present invention provides the following technical solutions: a convenient static load device height adjustment method, comprising a clamping seat and a pedal block being sequentially sleeved on a lifting rod;

[0021] The first inclined block contacts the second inclined block, pushing the offset pin out of the shaft ring and into the pitch-changing groove;

[0022] Insert the limit rod into the limit hole on the pedal;

[0023] Start the motor and adjust the distance between the pedals.

[0024] The beneficial effects of the present invention are as follows: the device can flexibly adjust the distance between the pedals through the design of the variable pitch slot, ensuring that inspectors of different heights can operate safely and comfortably, greatly improving the inspection efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a structural schematic diagram of the portable static load device of the present invention.

[0027] Figure 2 It is a partial cross-sectional view of the portable static load device of the present invention.

[0028] Figure 3 It is a schematic diagram of the explosion of the local structure of the present invention.

[0029] Figure 4 It is a schematic cross-sectional view of the local structure of the present invention.

[0030] Figure 5 Flowchart of the portable static load device height adjustment method of the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1

[0035] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a portable static load device, comprising at least one set of pedal blocks 100 and a clamping unit 200 disposed inside the pedal blocks 100;

[0036] The pedal block 100 is restricted by the clamping unit 200 to rise and fall on the lifting rod 305;

[0037] The static load unit 300 includes a box body 301 , handles 302 provided on both sides of the end surface of the box body 301 , a pulley assembly 303 provided at the bottom of the box body 301 , a driving assembly 304 provided inside the box body 301 , and a lifting rod 305 provided inside the driving assembly 304 .

[0038] Furthermore, the driving assembly 304 includes a battery 304 a disposed inside the box 301 , a fixing bracket 304 b disposed outside the battery 304 a , and a motor 304 c disposed on one side of the battery 304 a .

[0039] It should be noted that each pedal block 100 is equipped with an inner clamping unit 200, which is used to limit the position of the pedal block during the test and allow it to move up and down along the lifting rod 305. The clamping unit 200 is arranged on the inner side of the pedal block 100. By cooperating with the lifting rod 305, it ensures that the pedal block 100 can be raised and lowered safely and smoothly within the set range, while preventing the pedal block from moving or falling off unexpectedly during the test. The clamping unit 200 includes a plurality of adjustable clamping components that can adapt to pedal blocks of different sizes and shapes. The spacing of these clamping components can be adjusted electrically or manually to ensure that the pedal block can be firmly fixed during each test.

[0040] Preferably, the box 301 serves as the outer shell of the entire system, providing the necessary protection and support. Handles 302 are provided on both sides of the end face of the box 301. This makes it easy for users to carry and position the entire device. The pulley assembly 303 is located at the bottom of the box 301, so that the entire device can be easily moved on a flat surface, improving the flexibility and ease of use of the equipment. The battery 304a powers the motor 304c, supporting long-term continuous operation. The fixing frame 304b firmly supports the battery 304a and other components, ensuring the stability and reliability of the internal structure. The motor 304c receives instructions from the control system and drives the lifting rod 305 to adjust the height of the pedal. The lifting rod 305 is connected to the drive assembly 304 and receives the power output of the motor 304c. According to the preset program or manually input parameters, the rise and fall of the pedal 100 is precisely controlled to ensure the consistency of the test conditions. The lifting rod adopts a screw drive method to ensure the accuracy and smoothness of the movement; the surface of the rod body is hardened to enhance the wear resistance and corrosion resistance.

[0041] Preferably, the lifting rod 305 is connected to the driving assembly 304 so that the motor drives the screw to rotate, and the spiral motion between the components is converted into linear motion of the pedal block, so that the device automatically loads the ladder step, replacing the manual operation in the traditional mode, thereby improving the degree of automation.

[0042] In summary, this device not only solves the problems existing in traditional pedal block static load test devices, but also greatly improves the efficiency and accuracy of pedal block testing, and is suitable for pedal block quality inspection needs in various occasions.

[0043] Example 2

[0044] Reference Figures 1 to 4 , which is the second embodiment of the present invention, is different from the first embodiment in that it also includes a pedal block 100 including pedal gears 101 arranged on both sides thereof, a hanging groove 102 arranged through the inner side thereof, and a limiting hole 103 arranged through the end surface thereof.

[0045] Furthermore, the clamping unit 200 includes a clamping seat 201 , a pin block 202 embedded in one side of the clamping seat 201 , and a limiting rod 203 disposed on one side of the limiting hole 103 .

[0046] Furthermore, the lifting rod 305 includes pitch-changing slots 305a provided in an array;

[0047] The pitch-changing slot 305 a cooperates with the pin block 202 .

[0048] Furthermore, the clamping seat 201 includes a shaft ring 201a sleeved on the outer side of the lifting rod 305, and a limit block 201b protruding from one side of the shaft ring 201a.

[0049] Furthermore, the hanging slot 102 includes a through slot 102a opened on one side thereof, and a first inclined block 102b disposed inside the through slot 102a;

[0050] The pedal block 100 further includes a connecting groove 104 formed at the bottom thereof.

[0051] Furthermore, the clamping seat 201 includes a supporting seat 201c disposed at the bottom thereof;

[0052] The limiting block 201b includes a plug-in hole 201b-1 at the bottom thereof and an avoidance groove 201b-2 at the top of the plug-in block 201b-1.

[0053] Furthermore, the pin block 202 includes an offset pin 202a plugged into the pitch-changing slot 305a, and a second inclined block 202b disposed on one side of the offset pin 202a.

[0054] A spring 202c is sleeved on the offset 202a.

[0055] It should be noted that the lifting rod 305 is connected to the output shaft of the motor 304c and is driven to move up and down by the control of the motor 304c. The lifting rod 305 is provided with variable pitch slots 305a of varying slopes, with the slope increasing from the bottom of the lifting rod 305 to the top. Furthermore, the clamping unit 200 restricts the treads 100, allowing the distance between adjacent treads 100 on the lifting rod 305 to be variable in pitch, thereby adapting to the needs of different testers and preventing accidents caused by testers stepping on empty steps.

[0056] Preferably, two sets of symmetrical steps 101 are provided on either side of the pedal block 100, making the steps 101 easy for the inspector to step on. A mounting slot 102 is provided along the axis of the pedal block 100, which can be sleeved onto the circumference of the clamping unit 200 to connect to the lifting rod 305. A limiting hole 103 is also provided on the side of the pedal block 100, eccentrically away from the mounting slot 102, to prevent the pedal block 100 from rotating.

[0057] Preferably, the hanging slot 102 is of a special shape, consisting of a notch provided through the center of the circle, a through slot 102a extending inward from the center of the circle, and a first inclined block 102b protruding from the center of the through slot 102a. The through slot 102a is a rectangular notch, and the first inclined block 102b protrudes from the inner wall of the through slot 102a.

[0058] Preferably, the engaging unit 200 comprises a engaging seat 201 that is sleeved onto the outside of the lifting rod 305, a pin block 202 that slides inside the engaging seat 201, and a limiting rod 203 that sleeves onto the inside of the limiting hole 103. The engaging seat 201 comprises a collar 201a that sleeves onto the circumference of the lifting rod 305, and a limiting block 201b that protrudes from one side of the collar 201a. The limiting block 201b is shaped similarly to the through-slot 102a, facilitating the pedal 100 to be seated into the engaging seat 201 from above, and ensuring that the limiting block 201b is tightly engaged with the through-slot 102a. A supporting seat 201c with a larger diameter is protruded from the bottom of the clamping seat 201, which has the same diameter as the overlapping groove 104 opened at the bottom of the pedal block 100, ensuring that when the pedal block 100 is placed into the clamping seat 201 from above, its bottom is horizontal, thereby ensuring that the next pedal block 100 that falls in is stable with the clamping unit 200.

[0059] Preferably, a set of avoidance grooves 201b-2 extending downward from the end surface of the limit block 201b but not reaching the bottom are provided on the inner side of the limit block 201b, and a set of insertion holes 201b-1 are provided through the side wall of the limit block 201b and below the avoidance grooves 201b-2. The avoidance grooves 201b-1 provide a buffer for the first inclined block 102b to fall when the pedal block 100 is lowered from above into the clamping seat 201. In addition, a pin block 202 is positioned within the insertion holes 201b-1 provided in the limit block 201b. After the first inclined block 102b falls, the pin block 202 can be squeezed toward the center of the shaft ring 201a.

[0060] The pin block 202 consists of a pin 202a at its end, a second beveled block 202b protruding from the rear end of the pin 202a, and a spring 202c sleeved around the pin 202a. The pin 202a is cylindrical, with one end that contacts the pitch-changing slot 305a being rounded. This allows for the spring 202c to be sleeved around the pin 202a, acting as a retractor. The rounded end reduces friction with the slot surface of the pitch-changing slot 305a, thereby enhancing lifting and lowering motion. The notch of the connecting hole 201b-1 is square, identical in cross-section to the second beveled block 202b. The cross-section of the second beveled block 202b is larger than that of the pin 202a, allowing one end of the spring 202c to contact the junction of the second beveled block 202b and the pin 202a, while the other end of the spring 202c contacts a collar protruding from the inner diameter of the connecting hole 201b-1. The upper end surface of the second inclined block 202b is formed into an inclined surface, similar in shape to the bottom surface of the first inclined block 102b. When the pedal 100 is lowered into the engaging seat 201 from above, the bottom surface of the first inclined block 102b contacts the upper end surface of the second inclined block 202b. The inclined surface forces the second inclined block 202b inward, compressing the spring 202c. This in turn pushes the offset pin 202a out of the shaft ring 201a, where it contacts the pitch-changing slot 305a.

[0061] During use, a set of adapters 201 is first mounted on the lifting rod 305, with the insertion hole 201b-1 aligned with the notch of the pitch-changing slot 305a. Then, a set of pedals 100 is placed on the adapters 201, with the through slot 102a and the limit block 201b aligned. When the pedal 100 is lowered into the adapter 201 from above, the bottom surface of the first inclined block 102b contacts the upper end surface of the second inclined block 202b. Under the action of the inclined surface, the second inclined block 202b is pressed inward, compressing the spring 202c, thereby extending the offset pin 202a out of the shaft ring 201a and into contact with the pitch-changing slot 305a. Each set of adapters 201 and pedals 100 is then sequentially mounted on the lifting rod 305 until the pedal 100 is raised or lowered to a desired height for testing. Finally, the limiting rod 203 is inserted into the limiting hole 103 until it is inserted into the box body 301, ensuring that the step block 100 does not rotate with the lifting rod 305. During testing, the lifting rod 305 is rotated by starting the motor 304c, so that the clamping seat 201 is restricted by the pin block 202 inside and the pitch-changing slot 305a on the lifting rod 305 to achieve lifting and lowering. Since the lifting rod 305 is provided with pitch-changing slots 305a of different slopes, and the slope of the pitch-changing slots 305a from the bottom to the top of the lifting rod 305 increases, the greater the degree of rotation, the larger the spacing between the step blocks 100, thereby adapting to the stepping of different testers and preventing the testers from stepping on the empty steps on the ladder and causing accidents.

[0062] A set of clamping seats 201 are placed on the lifting rod 305, and the plug hole 201b-1 thereon is aligned with the notch of the pitch-changing slot 305a. Subsequently, a set of pedal blocks 100 are placed on the clamping seats 201, so that the through slot 102a of the pedal block 100 is aligned with the limit block 201b of the clamping seat 201. When the pedal block 100 falls into the clamping seat 201 from above, the bottom surface of the first inclined block 102b gradually contacts the upper end surface of the second inclined block 202b. Through the action of the inclined surface, the second inclined block 202b is squeezed inwardly of the center of the circle, compressing the spring 202c, thereby pushing the offset pin 202a out of the shaft ring 201a, and finally contacting the pitch-changing slot 305a. After completing the installation of the first set of connectors 201 and pedal blocks 100, follow the steps above to sequentially attach each set of connectors 201 and its corresponding pedal block 100 to the lifting rod 305 until all pedal blocks 100 reach the desired height and meet the testing requirements. Once all pedal blocks 100 are installed, insert the limiting rod 203 into the limiting hole 103 on the pedal block 100, securing it firmly inside the housing 301. This effectively prevents the pedal block 100 from rotating with the lifting rod 305, ensuring the safety and accuracy of the testing process.

[0063] During the actual inspection process, the motor 304c is started to rotate the lifting rod 305. At this point, the clamping seat 201, with its internal pin block 202 and the variable pitch slot 305a on the lifting rod 305, achieves smooth lifting and lowering thanks to the combined action of the pin block 202 and the variable pitch slot 305a on the lifting rod 305. The lifting rod 305 is designed with variable pitch slots 305a of varying slopes, with the slope gradually increasing from bottom to top. Therefore, as the rotation angle increases, the spacing between the steps 100 also increases accordingly, thereby accommodating the needs of different inspectors and preventing safety accidents caused by stepping on empty steps on the ladder.

[0064] In summary, the design of the variable pitch slot 305a enables the device to flexibly adjust the distance between the pedals 100, ensuring that inspectors of different heights can operate safely and comfortably, thereby greatly improving inspection efficiency and safety.

[0065] Example 3

[0066] Reference Figure 5 , which is the third embodiment of the present invention, differs from the first two embodiments in that: it also provides a convenient static load device, including a clamping seat and a pedal block sequentially sleeved on the lifting rod;

[0067] The first inclined block contacts the second inclined block, pushing the offset pin out of the shaft ring and into the pitch-changing groove;

[0068] Insert the limit rod into the limit hole on the pedal;

[0069] Start the motor and adjust the distance between the pedals.

[0070] It should be noted that the card seat 201 is sleeved on the lifting rod 305, ensuring that the plug hole 201b-1 is aligned with the pitch-changing slot 305a. The pedal 100 is placed on the card seat 201, so that the through slot 102a is connected to the limit block 201b.

[0071] When the pedal 100 is seated, the first inclined block 102b contacts the second inclined block 202b, compressing the spring 202c and pushing the offset pin 202a to fit into the pitch-changing slot 305a.

[0072] Multiple sets of the connecting seats 201 and the pedal blocks 100 are sleeved in sequence until a predetermined height is reached.

[0073] Insert the limiting rod 203 into the limiting hole 103 of the pedal block 100 and fix it to the box body 301 to prevent rotation.

[0074] Start the motor 304c, and through the pin block 202 and the pitch-changing slot 305a, the pedal 100 is smoothly raised and lowered. The slope of the pitch-changing slot 305a gradually increases from the bottom to the top. As the rotation angle increases, the distance between the pedals increases to meet the needs of different people.

[0075] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A portable static load device, characterized in that: It comprises at least one set of pedal blocks (100) and a clamping unit (200) arranged inside the pedal blocks (100); The pedal block (100) is limited by the clamping unit (200) to rise and fall on the lifting rod (305); The static load unit (300) comprises a box body (301), handles (302) arranged on both sides of the end surface of the box body (301), a pulley block (303) arranged at the bottom of the box body (301), a driving component (304) arranged on the inner side of the box body (301), and the lifting rod (305) arranged on the inner side of the driving component (304).

2. The portable static load device according to claim 1, characterized in that: The pedal block (100) comprises pedals (101) arranged on both sides thereof, a hanging groove (102) penetratingly arranged on the inner side thereof, and a limiting hole (103) penetratingly arranged on the end surface thereof.

3. The portable static load device according to claim 2, characterized in that: The clamping unit (200) comprises a clamping seat (201), a pin block (202) embedded in one side of the clamping seat (201), and a limiting rod (203) arranged on one side of the limiting hole (103).

4. The portable static load device according to claim 3, characterized in that: The driving assembly (304) comprises a battery (304a) arranged inside the box (301), a fixing frame (304b) arranged outside the battery (304a), and a motor (304c) arranged on one side of the battery (304a).

5. The portable static load device according to claim 4, characterized in that: The lifting rod (305) includes variable pitch slots (305a) arranged in an array; Furthermore, the pitch-changing groove (305a) matches the pin block (202).

6. The portable static load device according to claim 5, characterized in that: The clamping seat (201) comprises a shaft ring (201a) sleeved on the outside of the lifting rod (305), and a limit block (201b) protruding from one side of the shaft ring (201a).

7. The portable static load device according to claim 6, characterized in that: The hanging slot (102) comprises a through slot (102a) opened on one side thereof, and a first inclined block (102b) arranged inside the through slot (102a); The pedal block (100) further comprises a lap groove (104) formed at the bottom thereof.

8. The portable static load device according to claim 7, characterized in that: The clamping seat (201) comprises a bearing seat (201c) arranged at the bottom thereof; The limiting block (201b) comprises a plug-in hole (201b-1) opened at the bottom thereof, and an avoidance groove (201b-2) arranged at the top of the plug-in block (201b-1).

9. The portable static load device according to claim 8, characterized in that: The pin block (202) comprises an offset pin (202a) plugged into the pitch-changing slot (305a), and a second inclined block (202b) arranged on one side of the offset pin (202a); Furthermore, a spring (202c) is sleeved on the offset pin (202a).

10. A convenient static load device height adjustment method, characterized in that: The method comprises the portable static load device according to any one of claims 1 to 9, and the following steps; The clamping seat and the pedal block are sleeved on the lifting rod in sequence; The first inclined block contacts the second inclined block, pushing the offset pin out of the shaft ring and into the pitch changing groove; Insert the limit rod into the limit hole on the pedal; Start the motor and adjust the distance between the pedals.

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