Suspension plate spring structure of heavy-load semitrailer

Abstract

The invention discloses a suspension plate spring structure of a heavy-load semitrailer, and relates to the technical field of suspension plate springs. Comprising a plate spring main body piece, and an insertion strip limiting piece is installed on the plate spring main body piece; an assembly traction piece is mounted on the plate spring main body piece; the insertion strip limiting piece extrudes, fits and assembles the traction piece; the insertion strip limiting piece is used for detecting fracture of the plate spring main body piece; a plate spring travel detection piece is mounted on the plate spring main body piece; the plate spring stroke detection piece is used for detecting the bending of the plate spring main body piece; the safety supporting piece can be used for automatically carrying out safety supporting when breakage occurs, and can be used for avoiding the situation that after local plate spring steel plates are broken, the remaining plate spring steel plates are broken when being excessively pressed, and consequently a vehicle frame loses supporting locally and even directly falls on wheels; the problems that according to an existing heavy-load semitrailer suspension plate spring structure, steel plate fracture automatic detection is not convenient, a supporting cross beam is not convenient to automatically guarantee when a steel plate is fractured, and safety is poor are solved.

Description

Technical Field

[0001] The invention relates to the technical field of suspension leaf springs, in particular to a suspension leaf spring structure for a heavy-duty semitrailer. Background Art

[0002] In the suspension composition of heavy-duty trucks, leaf springs are an important component. The leaf spring structure has the advantages of being tough and durable. The leaf spring can adapt to different load-bearing task requirements by increasing the number, thickness and width of steel plates. It is particularly suitable for high-intensity load-bearing conditions. The truck leaf spring is fixed to the axle by U-bolts, and the two ends of the leaf spring are installed in the preset suspension supports of the frame beam. The current heavy-duty semi-trailer suspension leaf spring structure requires the driver to frequently observe the state of the steel plate, which is not convenient for automatic detection of steel plate fractures. Once a steel plate breaks, it needs to be repaired in time, otherwise it is easy to cause safety hazards. It is also not convenient to automatically support the crossbeam when the steel plate breaks. The safety is poor, it is not convenient to automatically limit the steel plates, the steel plates are not stable, and longer steel plates are prone to dislocation. At the same time, the leaf spring load-bearing control is poor, and long-term overloading and excessive downward pressure will affect the service life of the leaf spring.

[0003] Therefore, we propose a heavy-duty semitrailer suspension leaf spring structure. Summary of the invention

[0004] The purpose of the present invention is to provide a heavy-loaded semi-trailer suspension leaf spring structure to solve the problem raised in the above background technology that the current heavy-loaded semi-trailer suspension leaf spring structure is not convenient for automatic detection of steel plate fracture, is not convenient for automatically protecting the supporting beam when the steel plate fractures, and has poor safety.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heavy-duty semi-trailer suspension leaf spring structure, comprising a leaf spring main body, an insert limiter installed on the leaf spring main body; an assembly pull member installed on the leaf spring main body; the insert limiter squeezes and fits the assembly pull member; the insert limiter is used to detect the breakage of the leaf spring main body; a leaf spring stroke detection member is installed on the leaf spring main body; the leaf spring stroke detection member is used to detect the bending of the leaf spring main body; a support prompt member is installed on the leaf spring main body; the support prompt member is used to prompt the state of the leaf spring main body; a safety support member is installed on the support prompt member; the safety support member is used to support the vehicle beam; the leaf spring main body comprises: a leaf spring steel plate and a limit groove, the leaf spring steel plate is provided in a row, the leaf spring steel plates in a row have different lengths, the leaf spring steel plates in a row are fitted together; and the limiting grooves are respectively provided at the places where the leaf spring steel plates in a row are fitted together.

[0006] Preferably, the support prompt component includes: a support pressure seat and a limit plate, the support pressure seat is attached to the top leaf spring steel plate; the limit plate is fixedly installed on the top of the support pressure seat; a through hole is provided in the middle of the support pressure seat; the two installation horseshoe tendons are respectively attached to the support pressure seat; the measuring steel wire and the two conductive copper sleeves pass through the support pressure seat.

[0007] Preferably, the insert bar limiting member comprises: a steel bar, a limiting block, an electrical connection spring sheet and an electrical connection fixing sheet, the steel bar is a cylindrical structure; the steel bar is provided with two rows; two of the steel bars are respectively located on the inner side of a row of limiting grooves; the two rows of steel bars are respectively used to limit a row of leaf spring steel plates; limiting blocks are respectively fixedly installed on the two rows of steel bars; the two rows of limiting blocks are respectively inserted into the bottom of a row of leaf spring steel plates; the limiting blocks are used to limit the steel bars; electrical connection spring sheets are respectively fixedly installed at the ends of the two rows of steel bars, and the electrical connection spring sheets are V-shaped structures; electrical connection fixing sheets are respectively fixedly installed at the ends of the two rows of steel bars, and the electrical connection spring sheets are located on the inner side of the electrical connection fixing sheets; the electrical connection spring sheets are aligned with the electrical connection fixing sheets.

[0008] Preferably, the safety support also includes: a limit torsion spring, the limit torsion spring is sleeved on the rotating shaft; the end of the limit torsion spring is connected to the rotating shaft; the other end of the limit torsion spring is connected to the support pressure seat.

[0009] Preferably, the leaf spring main body also includes: a mounting horseshoe tendon, two mounting horseshoe tendons are provided, and the two mounting horseshoe tendons are respectively located on the outside of a row of leaf spring steel plates; threads are respectively provided at the bottom of the two mounting horseshoe tendons; the mounting horseshoe tendons are used to connect the axle through nuts.

[0010] Preferably, the safety support member includes: a support column and a rotating shaft, the end of the support column is provided with a rubber pad; the supporting column is fixedly mounted with a rotating shaft; the rotating shaft is rotatably mounted on the supporting pressure seat; the limiting plate is used to limit the supporting column; the sliding limiting shaft is inserted into the side of the supporting column.

[0011] Preferably, the support prompt member also includes: a conductive spring clip and an indicator light, two conductive spring clips are fixedly installed in the through hole in the middle of the support pressure seat; the two conductive spring clips are elastically attached to the outside of the measuring steel wire respectively; an insulating layer is provided on the outside of the measuring steel wire; the two conductive spring clips are located between two conductive copper sleeves; two indicator lights are fixedly installed on the support pressure seat; the power connection spring clip, the power connection fixing plate and the right indicator light are connected in series with a power supply; the conductive spring clip, the two conductive copper sleeves and the left indicator light are connected in series with a power supply.

[0012] Preferably, the support prompt member also includes: an electromagnet, a sliding limit shaft and a limit tension spring, the electromagnet is fixedly mounted on the support pressure seat through a bracket; a sliding limit shaft is slidably mounted on the support pressure seat; the electromagnet is used to magnetically attract the sliding limit shaft; the power-connected spring sheet, the power-connected fixing sheet and the electromagnet are connected in series with a power supply; a limit tension spring is sleeved on the sliding limit shaft; the limit tension spring is connected between the support pressure seat and the sliding limit shaft.

[0013] Preferably, the assembled pulling member includes: a pulling wire rod and a fastening nut, the pulling wire rod is inserted into a row of leaf spring steel plates; the fastening nut is threadedly connected to the pulling wire rod; the fastening nut is fastened and fits on the leaf spring steel plate; the power-connecting spring sheet is squeezed and fits the pulling wire rod.

[0014] Preferably, the leaf spring stroke detection component includes: a rotating adapter block, an adapter tension spring, a measuring steel wire and a conductive copper sleeve. The rotating adapter block is provided with two, and the two rotating adapter blocks are respectively rotatably mounted on the leaf spring steel plate; the rotating adapter block on the left side is fixedly mounted with an adapter tension spring; the measuring steel wire is fixedly mounted on the adapter tension spring, and the end of the measuring steel wire is connected to the rotating adapter block on the right side; two conductive copper sleeves are fixedly mounted on the measuring steel wire.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention adopts an assembled pulling piece that can cooperate with the insert limit piece to detect the safety of the leaf spring steel plate. It automatically performs detection work when the leaf spring steel plate is broken, which can facilitate staff to carry out repairs and other processing work in time after discovery, thereby improving the safety of the structure and avoiding continued use after a local leaf spring steel plate is broken, causing more leaf spring steel plates to break and affecting driving safety. The detection of this structure is more direct and accurate.

[0017] The use of a safety support can be used to automatically provide safety support when a break occurs. It can be used to prevent the remaining leaf spring steel plates from breaking when they are over-stressed after a local leaf spring steel plate breaks, causing the vehicle frame to partially lose support or even fall directly onto the wheels. This structure can be automatically controlled and the support columns can be erected to prevent the frame from falling and pressing on the wheels at the bottom of the frame, thereby affecting driving safety.

[0018] The leaf spring stroke detection component has a compact structure and can be used to detect the degree of deformation of the leaf spring main body, to avoid the leaf spring main body being excessively pressed by the elasticity and the shortened service life caused by long-term overloading, thereby improving the safety of vehicle operation. At the same time, two conductive copper sleeves are located on both sides of the conductive spring piece to ensure comprehensive detection. Regardless of whether the upper leaf spring steel plate is directly deformed, bent, or broken, or the leaf spring steel plate is excessively pressed, an alarm can be triggered to ensure the timeliness of problem detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a heavy-duty semi-trailer suspension leaf spring structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the bottom structure of a heavy-duty semi-trailer suspension leaf spring structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the main body of the leaf spring of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the insert limiting member of the present invention;

[0023] Figure 5 This is a cross-sectional view of the structure of the insert limiting member of the present invention;

[0024] Figure 6 For the present invention Figure 5 A magnified view of the structure of the middle B area;

[0025] Figure 7 This is a schematic diagram of the structure of the assembled pulling member of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the leaf spring travel detection member of the present invention;

[0027] Fig. 9 This is a schematic diagram of the structure of the support prompt member of the present invention;

[0028] Fig.10 This is an enlarged view of the structure of region C in the present invention 1;

[0029] Fig.11 This is a cross-sectional view of the conductive spring structure of the present invention;

[0030] Fig.12 It is a schematic diagram of the support column structure of the present invention.

[0031] In the figure: 1. leaf spring main body; 101. leaf spring steel plate; 1011. limit groove; 102. install horseshoe tendon; 2. insert limit piece; 201. steel bar; 202. limit block; 203. power connection spring; 204. power connection fixing plate; 3. assemble pulling piece; 301. pulling wire rod; 302. fastening nut; 4. leaf spring stroke detection piece; 401. rotating adapter block; 402. adapter tension spring; 403. measuring steel wire; 404. conductive copper sleeve; 5. support prompt piece; 501. support pressure seat; 5011. limit plate; 502. conductive spring; 503. indicator light; 504. electromagnet; 505. sliding limit shaft; 506. limit tension spring; 6. insurance support piece; 601. support column; 602. rotating shaft; 603. limit torsion spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figures 1 to 12 As shown:

[0034] The present invention provides a technical solution: a heavy-duty semi-trailer suspension leaf spring structure, comprising a leaf spring main body 1, an inserting strip limiting member 2 is installed on the leaf spring main body 1; an assembly pulling member 3 is installed on the leaf spring main body 1; the inserting strip limiting member 2 is pressed and fitted with the assembly pulling member 3; the inserting strip limiting member 2 is used to detect the breakage of the leaf spring main body 1; a leaf spring stroke detection member 4 is installed on the leaf spring main body 1; the leaf spring stroke detection member 4 is used to detect the bending of the leaf spring main body 1; a support prompting member 5 is installed on the leaf spring main body 1; the support prompting member 5 is used to prompt the state of the leaf spring main body 1; a safety support member 6 is installed on the support prompting member 5; the safety support member 6 is used to support the vehicle beam; the leaf spring main body 1 comprises: a leaf spring steel plate 101 and a limiting groove 1011, the leaf spring steel plates 101 are provided in a row, the lengths of the leaf spring steel plates 101 in a row are different, and the leaf spring steel plates 101 in a row are fitted together; the limiting grooves 1011 are respectively provided at the places where the leaf spring steel plates 101 in a row are fitted together.

[0035] Among them, the leaf spring main body 1 also includes: an installation horseshoe tendon 102, two installation horseshoe tendons 102 are provided, and the two installation horseshoe tendons 102 are respectively located on the outside of a row of leaf spring steel plates 101; the bottoms of the two installation horseshoe tendons 102 are respectively provided with threads; the installation horseshoe tendons 102 are used to connect the axle through nuts; the insertion strip limiter 2 includes: a steel bar 201, a limit block 202, an electrical connection spring 203 and an electrical connection fixing plate 204, the steel bar 201 is a cylindrical structure; the steel bar 201 is provided with two rows; the two steel bars 201 are respectively located on the inner side of a row of limit grooves 1011; the two rows of steel bars 201 are respectively used to limit a row of leaf spring steel plates 101; the limit blocks 202 are respectively fixed on the two rows of steel bars 201; the two rows of limit The positioning blocks 202 are respectively inserted into the bottom of a row of leaf spring steel plates 101; the limiting blocks 202 are used to limit the steel bars 201; the ends of the two rows of steel bars 201 are respectively fixedly installed with power-connecting spring pieces 203, and the power-connecting spring pieces 203 are V-shaped structures; the ends of the two rows of steel bars 201 are respectively fixedly installed with power-connecting fixing pieces 204, and the power-connecting spring pieces 203 are located on the inner side of the power-connecting fixing pieces 204; the power-connecting spring pieces 203 are aligned with the power-connecting fixing pieces 204; the assembled pulling member 3 includes: a pulling wire rod 301 and a fastening nut 302, the pulling wire rod 301 is inserted into a row of leaf spring steel plates 101; the pulling wire rod 301 is threadedly connected with a fastening nut 302; the fastening nut 302 is fastened and fitted on the leaf spring steel plates 101; the power-connecting spring pieces 204 are respectively fixedly installed 3 is squeezed and fitted with the pulling wire rod 301. The assembled pulling piece 3 can cooperate with the insert limit piece 2 to detect the safety of the leaf spring steel plate 101. When the leaf spring steel plate 101 is broken, the detection work is automatically carried out, which can facilitate the staff to carry out timely maintenance and other processing work after discovery, thereby improving the safety of the structure and avoiding the continued use of the leaf spring steel plate 101 after the partial leaf spring steel plate 101 is broken, causing more leaf spring steel plates 101 to break and affect driving safety. The detection of this structure is more direct and accurate. At the same time, the insert limit piece 2 is used to detect when the leaf spring steel plate 101 is worn and the fastening nut 302 is loose. The steel bar 201 is limited in the limit groove 1011. When the leaf spring main body 1 is squeezed, elastic support is performed. When supporting, the reinforcement bar 201 can be used to prevent a row of leaf spring steel plates 101 from being misaligned, and the matching accuracy between a row of leaf spring steel plates 101 can be improved, and the lateral compression resistance effect is better. When a partial fracture occurs in the row of leaf spring steel plates 101, the row of leaf spring steel plates 101 will be deformed with elastic extrusion. At this time, the broken row of leaf spring steel plates 101 can be displaced outward, and the limit block 202 is inserted into the row of leaf spring steel plates 101. When the row of leaf spring steel plates 101 is displaced, the reinforcement bar 201 will be pulled to displace together, and the power-connecting spring piece 203 will elastically fit the power-connecting fixing piece 204. At this time, the indicator light 503 on the right can be powered on and light up to prompt. The structural detection is reasonable, and it can also play a limiting role, thereby improving the integrity of the steel plate.

[0036] The support prompting member 5 includes: a support pressing seat 501 and a limit plate 5011, the support pressing seat 501 is attached to the top leaf spring steel plate 101; the limit plate 5011 is fixedly installed on the top of the support pressing seat 501; a through hole is provided in the middle of the support pressing seat 501; two mounting horseshoe tendons 102 are respectively attached to the support pressing seat 501; the measuring wire 403 and the two conductive copper sleeves 404 pass through the support pressing seat 501; the support prompting member 5 also includes: a conductive spring 502 and an indicator light 503 , two conductive springs 502 are fixedly installed in the through hole in the middle of the support pressure seat 501; the two conductive springs 502 are elastically attached to the outside of the measuring wire 403 respectively; an insulating layer is provided on the outside of the measuring wire 403; the two conductive springs 502 are located between the two conductive copper sleeves 404; two indicator lights 503 are fixedly installed on the support pressure seat 501; the power connection spring 203, the power connection fixed sheet 204 and the right indicator light 503 are connected in series with the power supply; the conductive spring 502, the two conductive copper sleeves 40 4 and the indicator light 503 on the left are connected in series with a power supply; the support prompting member 5 also includes: an electromagnet 504, a sliding limit shaft 505 and a limit tension spring 506, the electromagnet 504 is fixedly installed on the support pressure seat 501 through a bracket; a sliding limit shaft 505 is slidably installed on the support pressure seat 501; the electromagnet 504 is used to magnetically attract the sliding limit shaft 505; the power-connected spring piece 203, the power-connected fixed piece 204 and the electromagnet 504 are connected in series with a power supply; a limit tension spring 506 is sleeved on the sliding limit shaft 505; the limit tension spring 506 is connected between the support pressure seat 501 and the sliding limit shaft 505, and the support prompting member 5 can be used for safety prompting work, which can make it easier for staff to find leaf spring safety problems in time. At the same time, this structure can cooperate with the installation of horseshoe tendons 102 to firmly install the leaf spring steel plate 101 on the vehicle axle to ensure stability. The use of two indicator lights 503 can ensure that the prompt is intuitive, and the two indicator lights 503 can also be directly installed in the vehicle cockpit for easy observation by the driver;

[0037] The leaf spring stroke detection component 4 includes: a rotating adapter block 401, an adapting tension spring 402, a measuring steel wire 403 and a conductive copper sleeve 404. There are two rotating adapter blocks 401, and the two rotating adapter blocks 401 are rotatably mounted on the leaf spring steel plate 101 respectively; an adapting tension spring 402 is fixedly mounted on the left rotating adapter block 401; a measuring steel wire 403 is fixedly mounted on the adapting tension spring 402, and the end of the measuring steel wire 403 is connected to the rotating adapter block 401 on the right; two conductive copper sleeves 404 are fixedly mounted on the measuring steel wire 403, and the leaf spring stroke detection component 4 is adopted, which has a compact structure and can be used to detect the deformation degree of the leaf spring main body 1, so as to avoid the leaf spring main body 1 being excessively elastically pressed and the service life being shortened due to long-term overloading, thereby improving the safety of vehicle operation, and at the same time, the two conductive copper sleeves 404 are respectively located on both sides of the conductive spring piece 502, so as to ensure comprehensive detection, whether it is The upper leaf spring steel plate 101 can be directly deformed, bent, broken or over-pressed to provide an alarm prompt, thereby ensuring the timeliness of problem detection. When the leaf spring steel plate 101 is elastically bent due to excessive downward pressure, the straight-line distance between the two ends of the leaf spring steel plate 101 increases when the leaf spring steel plate 101 is pressed, which will pull the measuring steel wire 403, and the adapting tension spring 402 will be stretched. At this time, the conductive copper sleeve 404 located on the left side close to the adapting tension spring 402 gradually approaches the conductive spring piece 502. Once the conductive copper sleeve 404 fits the conductive spring piece 502, the power connection path can be achieved, and the indicator light 503 on the left can light up for prompting. Similarly, when there is a large bending deformation or breakage at both ends of the upper leaf spring steel plate 101, the length of the two ends of the leaf spring steel plate 101 will also change, and both can be prompted by the indicator light 503, which is intuitive and reliable, and does not require the driver to perform a dangerous under-vehicle inspection.

[0038] Embodiment 2, on the basis of embodiment 1, the safety support 6 comprises: a support column 601 and a rotating shaft 602, a rubber pad is provided at the end of the support column 601; the rotating shaft 602 is fixedly mounted on the support column 601; the rotating shaft 602 is rotatably mounted on the support pressure seat 501; the limiting plate 5011 is used to limit the support column 601; the sliding limiting shaft 505 is inserted into the side of the support column 601; the safety support 6 also comprises: a limiting torsion spring 603, the limiting torsion spring 603 is sleeved on the rotating shaft 602; the end of the limiting torsion spring 603 is connected to the rotating shaft 602; the other end of the limiting torsion spring 603 is connected to the support pressure seat 501, and the use of the safety support 6 can be used for automatic safety support in the event of a break, and can be used to avoid local leaf spring After the steel plate 101 breaks, the remaining leaf spring steel plate 101 also breaks when it is over-stressed, causing the vehicle frame to partially lose support and even fall directly onto the wheel. The present structure can realize automatic control and can be erected using the support column 601 to prevent the frame from falling and pressing on the wheel at the bottom of the frame. The present structure is simple to control. When the leaf spring steel plate 101 breaks and the power-connecting spring piece 203 and the power-connecting fixing piece 204 fit together, the electromagnet 504 can realize conductive pathway. The electromagnet 504 can magnetically attract the sliding limit shaft 505 and pull it out from the side of the support column 601. Under the elastic extrusion of the limit torsion spring 603, the support column 601 can be erected to provide preventive support under the frame. The length of the support column 601 can be adjusted as needed.

[0039] The working principle of this embodiment is as follows: first, the horseshoe tendon 102 is installed to connect the axle through the nut, and the upper leaf spring steel plate 101 is installed in the steel plate suspension support reserved in the vehicle frame to realize the installation of this structure. The reinforcing bar 201 is limited in the limiting groove 1011. When the leaf spring main body 1 is squeezed and elastically supported, the reinforcing bar 201 can be used to prevent a row of leaf spring steel plates 101 from being misaligned, and the matching accuracy between a row of leaf spring steel plates 101 can be improved, and the lateral compression resistance effect is better. When a row of leaf spring steel plates 101 is partially broken, the row of leaf spring steel plates 101 is at this time. With elastic extrusion deformation, the broken row of leaf spring steel plates 101 can be displaced outward, and the limit block 202 is inserted into the row of leaf spring steel plates 101. When the row of leaf spring steel plates 101 is displaced, the steel bar 201 will be pulled and displaced together. At this time, the power-connecting spring piece 203 is away from the pulling wire rod 301, and the power-connecting spring piece 203 that is no longer squeezed by the pulling wire rod 301 will elastically fit the power-connecting fixing piece 204. At this time, the indicator light 503 on the right can be powered on and light up to prompt. By setting two rows of insert strip limiters 2, comprehensive detection is guaranteed. Similarly, if the fastening nut 302 is loosened or other reasons cause a row of leaf spring steel plates to be 101 becomes loose. At this time, a row of leaf spring steel plates 101 will be displaced under the vibration factor of the vehicle during driving, and part of the power-connected spring pieces 203 will be separated from the pulling wire rod 301 again, so that the indicator light 503 on the right side is powered on to light up for prompting. When the leaf spring steel plate 101 is elastically bent by excessive downward pressure, when the leaf spring steel plate 101 is pressed, the straight-line distance between the two ends of the leaf spring steel plate 101 increases, which will pull the measuring wire 403, and the adapter tension spring 402 will be stretched. At this time, the conductive copper sleeve 404 on the left side close to the adapter tension spring 402 gradually approaches the conductive spring piece 502. Once the conductive copper sleeve 404 The conductive spring 502 can be attached to realize the power connection path, and the indicator light 503 on the left can light up to prompt. Similarly, when the two ends of the leaf spring steel plate 101 on the upper layer are greatly bent or broken, the length of the two ends of the leaf spring steel plate 101 will also change. When the length is shortened, the conductive copper sleeve 404 on the right will conduct the indicator light 503 on the left to prompt. When the length increases, as mentioned above, the conductive copper sleeve 404 on the left side close to the adapter tension spring 402 will be attached to the conductive spring 502 to realize the power connection path, and the indicator light 503 on the left can light up to prompt. It is intuitive and reliable, and the driver does not need to perform dangerous under-vehicle inspection.When the leaf spring steel plate 101 is broken and the power-connecting spring 203 and the power-connecting fixed plate 204 are attached, the electromagnet 504 can realize the conductive path, and the electromagnet 504 can magnetically attract the sliding limit shaft 505, and the limit tension spring 506 can be stretched, and the sliding limit shaft 505 can be pulled out from the side of the support column 601, releasing the limit support column 601. Under the elastic extrusion of the limit torsion spring 603 and the limit of the limit plate 5011, the support column 601 can be erected to provide preventive support under the frame. The length of the support column 601 can be adjusted according to needs. This structure can be reused. After the leaf spring steel plate 101 is replaced, the support column 601 can be folded and inserted into the support column 601 again through the sliding limit shaft 505 to limit the position, and the limit tension spring 506 is pulled to ensure the limit stability. ;

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty semitrailer suspension leaf spring structure, comprising a leaf spring main body (1), on which an insert stopper (2) is mounted; characterized in that: An assembly pulling piece (3) is installed on the leaf spring main body (1); the inserting strip limiting piece (2) is pressed and fitted with the assembly pulling piece (3); the inserting strip limiting piece (2) is used to detect the breakage of the leaf spring main body (1); A leaf spring travel detection component (4) is installed on the leaf spring main body (1); the leaf spring travel detection component (4) is used to detect the bending of the leaf spring main body (1); A support prompting member (5) is installed on the leaf spring main body (1); the support prompting member (5) is used to prompt the state of the leaf spring main body (1); A safety support member (6) is installed on the support prompt member (5); the safety support member (6) is used to support the vehicle beam; The leaf spring main body (1) comprises: a leaf spring steel plate (101) and a limiting groove (1011); the leaf spring steel plates (101) are arranged in a row, the leaf spring steel plates (101) in a row have different lengths, and the leaf spring steel plates (101) in a row are in close contact with each other; and the limiting grooves (1011) are respectively provided at the places where the leaf spring steel plates (101) in a row are in close contact with each other.

2. A heavy-duty semitrailer suspension leaf spring structure according to claim 1, characterized in that: The leaf spring main body (1) further comprises: a mounting tendon (102), wherein two mounting tendons (102) are provided, and the two mounting tendons (102) are respectively located outside a row of leaf spring steel plates (101); threads are respectively provided at the bottom of the two mounting tendons (102); and the mounting tendons (102) are used to connect the axle via nuts.

3. The heavy-duty semitrailer suspension leaf spring structure according to claim 1, characterized in that: The insert bar limiting member (2) comprises: a reinforcing bar (201), a limiting block (202), an electrical connection spring sheet (203) and an electrical connection fixing sheet (204); the reinforcing bar (201) is a cylindrical structure; the reinforcing bar (201) is provided with two rows; two reinforcing bars (201) are respectively located inside a row of limiting grooves (1011); the two rows of reinforcing bars (201) are respectively used to limit a row of leaf spring steel plates (101); the limiting blocks (202) are respectively fixedly installed on the two rows of reinforcing bars (201); the two rows of The limiting blocks (202) are respectively inserted into the bottom of a row of leaf spring steel plates (101); the limiting blocks (202) are used to limit the reinforcing bars (201); the ends of the two rows of reinforcing bars (201) are respectively fixedly mounted with power connection springs (203), and the power connection springs (203) are of a V-shaped structure; the ends of the two rows of reinforcing bars (201) are respectively fixedly mounted with power connection fixing plates (204), and the power connection springs (203) are located inside the power connection fixing plates (204); the power connection springs (203) are aligned with the power connection fixing plates (204).

4. A heavy-duty semitrailer suspension leaf spring structure according to claim 3, characterized in that: The assembled pulling member (3) comprises: a pulling wire rod (301) and a fastening nut (302); the pulling wire rod (301) is inserted into a row of leaf spring steel plates (101); a fastening nut (302) is threadedly connected to the pulling wire rod (301); the fastening nut (302) is fastened to the leaf spring steel plate (101); and the electrical spring sheet (203) is pressed and fitted to the pulling wire rod (301).

5. The heavy-duty semitrailer suspension leaf spring structure according to claim 3, characterized in that: The leaf spring stroke detection component (4) comprises: a rotating adapter block (401), an adapting tension spring (402), a measuring steel wire (403) and a conductive copper sleeve (404); two rotating adapter blocks (401) are provided, and the two rotating adapter blocks (401) are respectively rotatably mounted on the leaf spring steel plate (101); the left rotating adapter block (401) is fixedly mounted with an adapting tension spring (402); the adapting tension spring (402) is fixedly mounted with a measuring steel wire (403), and the end of the measuring steel wire (403) is connected to the right rotating adapter block (401); and the measuring steel wire (403) is fixedly mounted with two conductive copper sleeves (404).

6. A heavy-duty semitrailer suspension leaf spring structure according to claim 5, characterized in that: The support prompt member (5) comprises: a support pressure seat (501) and a limit plate (5011), wherein the support pressure seat (501) is attached to the top leaf spring steel plate (101); the limit plate (5011) is fixedly installed on the top of the support pressure seat (501); a through hole is provided in the middle of the support pressure seat (501); the two mounting horseshoe tendons (102) are respectively attached to the support pressure seat (501); the measuring steel wire (403) and the two conductive copper sleeves (404) pass through the support pressure seat (501).

7. A heavy-duty semitrailer suspension leaf spring structure according to claim 6, characterized in that: The support prompting member (5) further comprises: a conductive spring sheet (502) and an indicator light (503); two conductive spring sheets (502) are fixedly installed in the through hole in the middle of the support pressure seat (501); the two conductive spring sheets (502) are elastically attached to the outside of the measuring steel wire (403) respectively; an insulating layer is provided on the outside of the measuring steel wire (403); the two conductive spring sheets (502) are located between two conductive copper sleeves (404); two indicator lights (503) are fixedly installed on the support pressure seat (501); the power connection spring sheet (203), the power connection fixing sheet (204) and the right indicator light (503) are connected in series with a power supply; the conductive spring sheet (502), the two conductive copper sleeves (404) and the left indicator light (503) are connected in series with a power supply.

8. A heavy-duty semitrailer suspension leaf spring structure according to claim 7, characterized in that: The support prompting member (5) further comprises: an electromagnet (504), a sliding limit shaft (505) and a limit tension spring (506); the electromagnet (504) is fixedly mounted on the support pressure seat (501) through a bracket; a sliding limit shaft (505) is slidably mounted on the support pressure seat (501); the electromagnet (504) is used to magnetically attract the sliding limit shaft (505); the power supply is connected in series to the power supply of the power connection spring sheet (203), the power connection fixing sheet (204) and the electromagnet (504); a limit tension spring (506) is sleeved on the sliding limit shaft (505); the limit tension spring (506) is connected between the support pressure seat (501) and the sliding limit shaft (505).

9. A heavy-duty semitrailer suspension leaf spring structure according to claim 8, characterized in that: The safety support member (6) comprises: a support column (601) and a rotating shaft (602); a rubber pad is provided at the end of the support column (601); the rotating shaft (602) is fixedly mounted on the support column (601); the rotating shaft (602) is rotatably mounted on the support pressure seat (501); the limiting plate (5011) is used to limit the support column (601); and the sliding limiting shaft (505) is plugged into the side of the support column (601).

10. A heavy-duty semitrailer suspension leaf spring structure according to claim 9, characterized in that: The safety support member (6) further comprises: a limiting torsion spring (603), wherein the limiting torsion spring (603) is sleeved on the rotating shaft (602); an end of the limiting torsion spring (603) is connected to the rotating shaft (602); and the other end of the limiting torsion spring (603) is connected to the supporting pressure seat (501).

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