A braking unit for locking construction machinery and equipment.

Abstract

This invention discloses a braking unit for locking construction machinery, comprising a drive component, a power shaft, and a drive shaft connecting the two. A connecting braking unit is provided between the power shaft and the drive shaft. The connecting braking unit includes a bottom adjustable support structure, a connecting control mechanism mounted on the bottom adjustable support structure and connecting the power shaft and the drive shaft, and a real-time braking structure mounted on the connecting control mechanism for unilateral braking. This invention adopts a modular structural design. The connecting control mechanism coaxially connects the drive component and the construction machinery drive component. The fastening connection component with an insert structure inside the connecting control mechanism can quickly lock and unlock the connection to the drive component. The real-time braking structure only brakes the working construction machinery, avoiding inertial braking damage caused by mutual braking. Combined with the flexibly adjustable bottom adjustable support structure, the braking unit can be installed and disassembled more quickly and effectively.

Description

Technical Field

[0001] This invention relates to the field of construction machinery technology, and in particular to a braking unit for locking construction machinery equipment. Background Technology

[0002] During the construction process, a lot of construction machinery is needed. Construction machinery is mostly driven by power equipment. However, existing power equipment usually does not have its own braking equipment. Therefore, in the application process, it often relies on inertial braking or uses independent braking equipment for control. If inertial braking is used in many construction machines, it is not possible to effectively control the operating state of the construction equipment, resulting in over-movement. Therefore, the demand for braking equipment is relatively large.

[0003] Braking devices for construction machinery are typically installed between the construction machinery and the power equipment. However, to match the movement of the machinery, existing braking devices often employ rigid structures, which present several problems: 1. Firstly, the contact points of the braking device experience significant wear, necessitating regular replacement of consumable parts, impacting equipment operation and resulting in long replacement cycles; 2. Secondly, braking devices often cannot simultaneously meet the needs of both the power equipment and the construction machinery. For example, power equipment ideally stops due to inertia after braking, while construction machinery should ideally stop immediately; 3. Finally, while independent braking devices can adapt to various types of construction machinery, they still suffer from poor versatility, requiring additional support structures for installation. Therefore, this project was developed to address these issues in depth. Summary of the Invention

[0004] To address the shortcomings in the aforementioned background technology, this invention proposes a braking unit for locking construction machinery and equipment, which solves the problem of excessive wear in the rigid structure braking of existing construction machinery.

[0005] The technical solution of this invention is implemented as follows:

[0006] A braking unit for locking construction machinery includes a drive component, a drive shaft, and a power shaft. The drive component is connected to and drives the power shaft via the drive shaft. A connecting braking unit is provided between the power shaft and the drive shaft. The connecting braking unit includes a bottom adjustable support structure, a connecting control mechanism disposed on the bottom adjustable support structure and connecting the power shaft and the drive shaft, and a real-time braking structure disposed on the connecting control mechanism for unilateral braking. The connecting control mechanism is also provided with an automatic controller connected to the drive component, the connecting control mechanism, and the real-time braking structure.

[0007] Furthermore, the connection control mechanism includes: a through housing, a through groove, a pair of rotating bearings, a connecting pipe, several limiting blocks, and several limiting slots, all mounted on a bottom adjustable support structure and sleeved on the power shaft and drive shaft; the through housing has a through groove, and a connecting pipe is rotatably connected within the through groove; the connecting pipe is sleeved at the junction of the power shaft and drive shaft; one end of the connecting pipe has several limiting blocks arranged in a circular array inside; the power shaft has several limiting slots that match the limiting blocks; the other end of the connecting pipe has a movable fastening connection assembly connected to the drive shaft.

[0008] Furthermore, the limiting block has a toothed structure, and the limiting groove is a toothed groove that matches the limiting block.

[0009] Furthermore, the fastening connection assembly includes: a plurality of insertion holes arranged in a ring array on the connecting pipe, a plurality of limiting blocks passing through the insertion holes, and a driving component for driving the limiting blocks to extend and retract, the driving component being connected to the connecting pipe; the driving shaft is provided with a plurality of limiting slots that match the limiting blocks.

[0010] Furthermore, the driving component is a frame-type electromagnet; a limiting ring extends circumferentially outward from the position of the insertion hole on the connecting pipe, and a limiting ring groove that fits the limiting ring is provided on the housing; the limiting ring is provided with a groove for mounting the frame-type electromagnet and communicating with the insertion hole; the end of the frame-type electromagnet is connected to the limiting block.

[0011] Furthermore, the real-time braking structure includes: a mounting groove, a fixing seat, several connecting bolts, and a disc brake; the mounting groove is coaxially formed inside the housing near the power shaft, the diameter of the mounting groove is larger than the diameter of the through groove, the fixing seat is detachably connected inside the mounting groove, and the disc brake is mounted on the fixing seat, the power of the disc brake is an electric push rod.

[0012] Furthermore, the mounting base is provided with a plurality of connecting grooves, and connecting bolts are inserted into the plurality of connecting grooves. The groove wall of the mounting groove is provided with a plurality of threaded holes that match the connecting bolts.

[0013] Furthermore, the bottom adjustable support structure includes: a base plate, a support seat, a pair of transverse connecting grooves, a pair of sliding blocks, a pair of adjusting screws, a pair of adjusting worm gears, a long driving worm, and a support base, all disposed at the bottom of the housing; the base plate has a support seat at its bottom, and the support seat has a pair of transverse connecting grooves, each of which is fitted with a sliding block, and each sliding block has an axially formed threaded groove, the adjusting screw being threaded into the threaded groove; the adjusting screw is rotatably connected to the transverse connecting groove, and the end of the adjusting screw is provided with an adjusting worm gear, the support seat having a long driving worm gear meshing with the adjusting worm gear; the bottom end of the sliding block is connected to the support base.

[0014] Furthermore, the support base has two pairs of rotating slots, and a rotating threaded column is rotatably provided inside one of the two pairs of rotating slots. A threaded sleeve is threaded onto the rotating threaded column, and the top end of the threaded sleeve is connected to the bottom plate. A short driving worm is rotatably provided inside the support base to drive the rotating threaded column to rotate, and a rotating worm wheel that meshes with the short driving worm is provided at the lower end of the rotating threaded column.

[0015] Furthermore, three gas struts are installed in the remaining three rotating slots of the two pairs of rotating slots, with the two ends of the three gas struts connected to the rotating slots and the bottom plate, respectively.

[0016] The beneficial effects of this invention are:

[0017] 1. Adopting a modular structural design, the drive unit and the engineering machinery are coaxially connected through the connection control mechanism. The fastening connection component with the plug-in structure inside the connection control mechanism can quickly lock and unlock the connection to the drive unit. The real-time braking structure only brakes the working engineering machinery to avoid the inertial braking damage caused by the two. With the flexible adjustable bottom support structure, the braking unit can be disassembled and assembled more quickly and effectively.

[0018] 2. With the real-time braking structure, it is suitable for braking the power shaft on one side, and only the power shaft is braked, so as to avoid the braking action from affecting the drive shaft and drive components.

[0019] 3. The power shaft and drive shaft are connected to the two ends of the connecting pipe respectively. The side connected to the power shaft is inserted into the limiting slot by a limiting block, so as to limit the synchronous rotation of the connecting pipe and the power shaft on the radial section of the power shaft. The other end is connected to the drive shaft by a movable fastening connection assembly, so as to realize the purpose of the drive component driving the power shaft to drive the construction machinery.

[0020] 4. A ring-shaped frame electromagnet is used to drive several limit blocks to extend and retract within several insertion holes, so as to realize the insertion or removal of the limit blocks into the limit slots, thereby using the function of the limit blocks to limit the connection between the drive shaft and the connecting pipe in the radial section.

[0021] 5. By installing a disc brake on the fixed seat, the drive shaft can be locked.

[0022] 6. The mounting base adopts a ring structure and is coaxially arranged on the outside of the power shaft. It is connected and fixed by several connecting bolts, which facilitates the disassembly and maintenance of the disc brake and the replacement of the disc brake pads.

[0023] 7. By rotating the long drive worm, the support block slides on a pair of sliding blocks under the limit of a pair of transverse connecting slots, thereby adjusting the lateral position of the support seat;

[0024] 8. By rotating the threaded column through the short drive worm, the threaded sleeve can rotate relative to the rotating threaded column, and then the height position of the support can be adjusted under the reverse thrust of the rotating threaded column. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 2 This is a side view of the structure of the present invention;

[0028] Figure 3 This is a top view of the structure of the present invention;

[0029] Figure 4 This is a schematic diagram of a partial cross-sectional view of the structure of the present invention from the right side;

[0030] Figure 5 This is a schematic diagram of the left-side partial cross-sectional structure of the present invention;

[0031] Figure 6 This is a side sectional view of the support base of the present invention;

[0032] Figure 7 This is the front view of the present invention;

[0033] Figure 8 This is a side view of the power shaft of the present invention;

[0034] Figure 9 This is a top sectional view of the support base of the present invention;

[0035] Figure 10 This is a side view of Embodiment 7 of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-9 As shown in Embodiment 1, a braking unit for locking construction machinery includes a drive component 1, a drive shaft 2, and a power shaft 3. The drive shaft 2 is mounted on the drive end of the drive component 1. The power shaft 3 is mounted on one side of the drive shaft 2 and is coaxially arranged with the drive shaft 2. A connecting braking unit is provided between the power shaft 3 and the drive shaft 2. In the specific implementation process, the drive component 1 and the drive shaft 2 are the power parts. The drive component 1 drives the drive shaft 2 to rotate, and then controls the power shaft 3 to rotate through the connecting braking unit, and brakes the power shaft 3.

[0038] According to the instruction manual Figures 1-9 It is known that the connecting braking unit includes: a bottom adjustable support structure 4, a connecting control mechanism 5, a real-time braking structure 6, and an automatic controller 7 for controlling braking, which implements automatic control.

[0039] A bottom adjustable support structure 4 is provided below the power shaft 3 and drive shaft 2, which serves as the bottom support for connecting the braking unit. During installation, the bottom adjustable support structure 4 is installed after the power shaft 3 of the mechanical equipment is installed, thereby matching the installation of the power shaft 3, and finally the drive component 1 is installed.

[0040] The bottom adjustable support structure 4 is equipped with a connection control mechanism 5, which is used to connect the power shaft 3 and the drive shaft 2. It plays the role of connecting and transmitting torque. Furthermore, the power shaft 3 and the drive shaft 2 adopt separate control to avoid the impact of braking on both.

[0041] The connecting control mechanism 5 is equipped with a real-time braking structure 6, which is suitable for braking the power shaft 3 on one side. The real-time braking structure 6 is installed on one side of the power shaft 3 and only performs braking action on the power shaft 3, so as to avoid the braking action affecting the drive shaft 2 and the drive component 1.

[0042] An automatic controller 7 is provided on the connection control mechanism 5 to connect the drive component 1, the connection control mechanism 5 and the real-time braking structure 6. The automatic controller 7 is used to obtain the working status of the drive component 1, the connection control mechanism 5 and the real-time braking structure 6 and to make corresponding control actions.

[0043] Example 2 differs from Example 1 in that, as Figure 1 and Figure 5 As shown, the connection control mechanism 5 includes: a housing 501, a through groove 502, a pair of rotating bearings 503, a connecting pipe 504, several limiting blocks 505, and several limiting slots 506. Their connection and positional relationships are as follows:

[0044] The housing 501 is mounted on the bottom adjustable support structure 4. A through groove 502 is provided in the center of the housing 501. A pair of symmetrical rotating bearings 503 are provided at both ends of the through groove 502. A connecting pipe 504 is embedded in each of the rotating bearings 503. The connecting pipe 504 is sleeved at the junction of the power shaft 3 and the drive shaft 2. A number of limiting blocks 505 are arranged in a ring array in the end of the connecting pipe 504 near the power shaft 3. A number of limiting slots 506 are provided on the power shaft 3 to match the limiting blocks 505. A movable fastening connection component is provided in the other end of the connecting pipe 504 to connect with the drive shaft 2.

[0045] In the specific implementation process, the housing 501 serves as a protective support structure for connecting the control mechanism 5 and the real-time braking structure 6. A through groove 502 is provided in the center of the housing 501, and a rotating bearing 503 is provided on the through groove 502. The rotating bearing 503 is used to fix the position of the connecting pipe 504 and at the same time reduces the rotational resistance. The two ends of the connecting pipe 504 are connected to the power shaft 3 and the drive shaft 2, respectively. On the side connected to the power shaft 3, a limiting block 505 is inserted into the limiting groove 506. Several limiting blocks 505 are toothed structures, and several limiting grooves 506 are toothed grooves that match the limiting blocks 505. This achieves the purpose of limiting the synchronous rotation of the connecting pipe 504 and the power shaft 3 on the radial section of the power shaft 3. Then, the other end is connected to the drive shaft 2 through a movable fastening connection assembly, thereby achieving the purpose of the drive component 1 driving the power shaft 3 to drive the construction machinery. When braking, the connection between the fastening connection assembly and the drive shaft 2 is first unlocked.

[0046] Example 3 differs from Example 2 in that, as Figure 1 and Figure 4 As shown, the fastening connection assembly includes: a plurality of insertion holes 507 arranged in a ring array on the connecting pipe 504, a plurality of limiting blocks 509 passing through the insertion holes 507, and a driving component for extending and retracting the limiting blocks 509, the driving component being connected to the connecting pipe 504; the driving shaft 2 is provided with a plurality of limiting slots 510 that match the limiting blocks 509.

[0047] Specifically, the driving component is a frame-type electromagnet 508. A limiting ring 511 extends circumferentially outward from the outer side of the insertion hole 507 on the connecting pipe 504. Several insertion holes 507 are arranged in a circular array inside the connecting pipe 504 near the drive shaft 2. The limiting ring 511 has a groove for mounting the frame-type electromagnet 508 and communicating with the insertion hole 507. Several frame-type electromagnets 508 are embedded in the groove, and several limiting blocks 509 are provided at the ends of the frame-type electromagnets 508. The limiting blocks 509 pass through the insertion hole 507 and are retractable. Several limiting slots 510 that match the limiting blocks 509 are provided on the drive shaft 2.

[0048] In the specific implementation process, when the connecting pipe 504 is connected to the drive shaft 2, a ring-shaped frame electromagnet 508 drives several limiting blocks 509 to extend and retract within several insertion holes 507, realizing the insertion or removal of the limiting blocks 509 into the limiting slots 510. This utilizes the function of the limiting blocks 509 to limit the connection between the drive shaft 2 and the connecting pipe 504 in the radial section. The housing 501 has corresponding positions with limiting ring grooves that fit with the limiting rings 511. On one hand, the limiting rings 511 limit the connecting pipe 504; on the other hand, they further increase the installation space for the frame electromagnets. The limiting blocks 509 have a cylindrical structure with hemispherical ends, and the limiting slots 510 are cylindrical grooves matching the diameter of the limiting blocks 509. This facilitates quick control of the limiting blocks 509 inserting into the limiting slots 510 during braking and starting. The hemispherical head end can quickly guide the rear limiting rod into the limiting slot 510.

[0049] Example 4 differs from Example 2 in that, as Figure 1 and Figure 4 As shown, the aforementioned real-time braking structure 6 includes: a mounting groove 601, a fixing seat 602, several connecting bolts 603, and a disc brake 604, the connection relationship and positional relationship of which are as follows:

[0050] An installation groove 601 is coaxially provided inside the through groove 502 and on one side of the connecting pipe 504. The diameter of the installation groove 601 is larger than the diameter of the through groove 502. A fixing seat 602 is embedded in the installation groove 601. Several connecting grooves are provided on the fixing seat 602. Several connecting bolts 603 are embedded in the several connecting grooves. Several threaded holes matching the connecting bolts 603 are provided on the groove wall of the installation groove 601. A disc brake 604 is provided on the fixing seat 602. The disc brake 604 is powered by an electric push rod. The brake end of the disc brake 604 can contact the power shaft 3.

[0051] In the specific implementation process, an installation groove 601 is provided on the outside of the housing 501 near the power shaft 3. The disc brake 604 is fixed inside the installation groove 601 by a fixing seat 602. The disc brake 604 is powered by an electric push rod. By controlling the extension and retraction of the electric push rod, the disc brake 604 locks onto the power shaft 3. The fixing seat 602 adopts a ring structure and is coaxially arranged on the outside of the power shaft 3. It is connected and fixed by several connecting bolts 603, which facilitates the disassembly and maintenance of the disc brake 604 and the replacement of the brake pads of the disc brake 604. It should be noted that after receiving the signal that the drive component 1 stops working, the frame electromagnet 508 is first controlled to work, so that the limit block 509 is unlocked, and then the electric push rod is controlled to perform the locking action.

[0052] Example 5 differs from Example 1 in that, as Figure 1 , Figure 6 and Figure 9 As shown, the aforementioned bottom adjustable support structure 4 includes: a base plate 401, a support base 402, a pair of transverse connecting grooves 403, a pair of sliding blocks 404, a pair of adjusting screws 405, a pair of adjusting worm gears 406, a long drive worm 407, and a support base 408. Their connection and positional relationships are as follows:

[0053] A base plate 401 is provided at the bottom of the housing 501, and a support base 402 is provided at the bottom of the base plate 401. A pair of horizontal connecting grooves 403 are opened in parallel on the support base 402. A pair of sliding blocks 404 are assembled in the pair of horizontal connecting grooves 403. A pair of threaded grooves are opened axially on the pair of sliding blocks 404. A pair of adjusting screws 405 are threadedly connected to the pair of threaded grooves. The two ends of the adjusting screws 405 are rotatably connected to the two ends of the horizontal connecting grooves 403. A pair of adjusting worm gears 406 are provided at the ends of the pair of adjusting screws 405. A long driving worm 407 is rotatably installed on one side of the support base 402. The long driving worm 407 meshes with the pair of driving worm gears. The bottom ends of the pair of sliding blocks 404 are connected to the support base 408.

[0054] In the specific implementation process, the base plate 401 is supported by the bottom of the housing 501. The height between the base plate 401 and the support base 402 can be adjusted to match the installation of the power shaft 3 and the drive shaft 2. The support base 402 can drive the top seat to adjust its horizontal position. By rotating the long drive worm 407, the long drive worm 407 meshes with a pair of drive worm wheels, thereby driving a pair of adjusting screws 405 to rotate and mesh with the internal thread grooves of a pair of sliding blocks 404. The support blocks slide on the pair of sliding blocks 404 under the limit of a pair of transverse connecting grooves 403, thereby adjusting the lateral position of the support base 402.

[0055] Example 6 differs from Example 5 in that, as Figure 1 , Figure 4and Figure 5 As shown, the support base 402 has two pairs of rotating slots. A rotating threaded column 409 with external threads is rotatably connected to one of the slots. A threaded sleeve 410 is threaded onto the rotating threaded column 409, and the top end of the threaded sleeve 410 is mounted on the base plate 401. A short drive worm gear 412, which drives the rotating threaded column 409, is rotatably connected inside the support base 402. A rotating worm wheel 413, which meshes with the short drive worm gear 412, is located at the lower end of the rotating threaded column 409. Three gas struts 411 are installed in the remaining three rotating slots, respectively connected to the rotating slots and the base plate 401. Rotating the rotating threaded column 409 by the short drive worm gear 412 causes the threaded sleeve 410 to rotate relative to the rotating threaded column 409. The reverse thrust of the rotating threaded column 409 then adjusts the height of the support base 402. During the movement of the threaded sleeve 410, the gas struts 411 move synchronously.

[0056] Example 7 differs from Example 5 in that, as Figure 10 As shown, in the specific implementation process, a pair of disc brakes 604 can be symmetrically arranged in the real-time braking structure 6, and a pair of disc brakes 604 are symmetrically arranged on the fixed base 602. The power of the pair of disc brakes 604 is an electric push rod, and the connecting bolts 603 are several hexagonal bolts. This can ensure that the working pressure of a single disc brake 604 is reduced when braking the power shaft 3, and at the same time shorten the braking process.

[0057] In summary, the braking unit for locking construction machinery adopts a modular structural design. It coaxially connects the drive component 1 and the construction machinery through the connecting control mechanism 5. The fastening connection component with the plug-in structure inside the connecting control mechanism 5 can quickly lock and unlock the connection to the drive component 1. The real-time braking structure 6 only brakes the working construction machinery to avoid joint inertial braking damage between the two. With the flexible adjustable bottom support structure 4, the braking unit can be disassembled and assembled more quickly and effectively.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A braking unit for locking construction machinery and equipment, comprising a drive member (1), a drive shaft (2), and a power shaft (3), wherein the drive member (1) is connected to and drives the power shaft (3) via the drive shaft (2), characterized in that: A connecting braking unit is provided between the power shaft (3) and the drive shaft (2); the connecting braking unit includes a bottom adjustable support structure (4), a connecting control mechanism (5) provided on the bottom adjustable support structure (4) and connecting the power shaft (3) and the drive shaft (2), and a real-time braking structure (6) provided on the connecting control mechanism (5) and used for single-sided braking. The connecting control mechanism (5) is also provided with an automatic controller (7) connected to the drive component (1), the connecting control mechanism (5) and the real-time braking structure (6). The connection control mechanism (5) includes: a through housing (501) installed on the bottom adjustable support structure (4) and sleeved on the power shaft (3) and drive shaft (2), a through groove (502), a pair of rotating bearings (503), a connecting pipe (504), a number of limiting blocks (505) and a number of limiting grooves (506); The housing (501) has a through groove (502) inside, and a connecting pipe (504) is rotatably connected inside the through groove (502). The connecting pipe (504) is sleeved at the junction of the power shaft (3) and the drive shaft (2). One end of the connecting pipe (504) has a number of limiting blocks (505) arranged in a ring. The power shaft (3) has a number of limiting slots (506) that match the limiting blocks (505). The other end of the connecting pipe (504) is provided with a movable fastening connection assembly that is connected to the drive shaft (2). The real-time braking structure (6) includes: a mounting groove (601), a fixing seat (602), several connecting bolts (603), and a disc brake (604); the mounting groove (601) is provided on the outside of one end of the housing (501) near the power shaft (3), and the disc brake (604) is fixed inside the mounting groove (601) by the fixing seat (602), so that the disc brake (604) can lock the power shaft (3).

2. The braking unit for locking construction machinery and equipment according to claim 1, characterized in that: The limiting block (505) has a toothed structure, and the limiting groove (506) is a toothed groove that matches the limiting block (505).

3. The braking unit for locking construction machinery and equipment according to claim 1 or 2, characterized in that: The fastening connection assembly includes: a plurality of insertion holes (507) arranged in a ring array on the connecting pipe (504), a plurality of limiting blocks (509) passing through the insertion holes (507), and a driving component for extending and retracting the limiting blocks (509), the driving component being connected to the connecting pipe (504); the driving shaft (2) is provided with a plurality of limiting slots (510) that match the limiting blocks (509).

4. The braking unit for locking construction machinery and equipment according to claim 3, characterized in that: The driving component is a frame electromagnet (508); a limiting ring (511) extends outward in the circumferential direction from the position of the insertion hole (507) on the connecting pipe (504), and a limiting ring groove that fits the limiting ring (511) is provided on the housing (501); the limiting ring (511) is provided with a groove for installing the frame electromagnet (508) and communicating with the insertion hole (507); the end of the frame electromagnet (508) is connected to the limiting block (509).

5. The braking unit for locking construction machinery and equipment according to claim 1, 2, or 4, characterized in that: A mounting slot (601) is detachably connected to a fixing seat (602), and a disc brake (604) is provided on the fixing seat (602). The disc brake (604) is powered by an electric push rod.

6. The braking unit for locking construction machinery and equipment according to claim 5, characterized in that: The fixing seat (602) is provided with a plurality of connecting grooves, and connecting bolts (603) are inserted in the plurality of connecting grooves. The mounting groove (601) has a plurality of threaded holes that match the connecting bolts (603) on its groove wall.

7. The braking unit for locking construction machinery and equipment according to claim 1, 2, 4, or 6, characterized in that: The bottom adjustable support structure (4) includes: a base plate (401) disposed at the bottom of the housing (501), a support base (402), a pair of transverse connecting grooves (403), a pair of sliding blocks (404), a pair of adjusting screws (405), a pair of adjusting worm gears (406), a long drive worm (407), and a support base (408). The bottom of the base plate (401) is provided with a support seat (402), and a pair of transverse connecting grooves (403) are provided on the support seat (402). Sliding blocks (404) are respectively installed in the pair of transverse connecting grooves (403). A threaded groove is provided axially in the sliding block (404). The adjusting screw (405) is threadedly connected in the threaded groove. The adjusting screw (405) is rotatably connected in the transverse connecting groove (403). An adjusting worm gear (406) is provided at the end of the adjusting screw (405). A long driving worm (407) that meshes with the adjusting worm gear (406) is provided in the support seat (402). The bottom end of the sliding block (404) is connected to the support base (408).

8. The braking unit for locking construction machinery and equipment according to claim 7, characterized in that: The support base (402) has two pairs of rotating slots. A rotating threaded column (409) is rotatably installed inside one of the two pairs of rotating slots. A threaded sleeve (410) is threaded on the rotating threaded column (409). The top end of the threaded sleeve (410) is connected to the bottom plate (401). A short driving worm (412) that drives the rotating threaded column (409) to rotate is rotatably installed inside the support base (402). A rotating worm wheel (413) that meshes with the short driving worm (412) is provided at the lower end of the rotating threaded column (409).

9. The braking unit for locking construction machinery and equipment according to claim 8, characterized in that: Three gas struts (411) are installed in the other three rotating slots of the two pairs of rotating slots. The two ends of the three gas struts (411) are respectively connected to the rotating slots and the bottom plate (401).

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