Flat plate goods-carrying trolley

Abstract

A flat plate goods carrying trolley comprises a bearing bottom plate, a first protection frame, a second protection frame and flexible cloth, the upper portion of the bearing bottom plate is connected with two first right-angle supporting plates, the first right-angle supporting plates are symmetrically arranged, the inner sides of the first right-angle supporting plates are connected with the flexible cloth, and the upper portions of the first right-angle supporting plates are connected with the first protection frame. The lower portion of the first protection frame is connected with two third right-angle supporting plates which are symmetrically arranged, the inner side of the first protection frame is connected with flexible cloth, the upper portion of the first protection frame is connected with two second right-angle supporting plates, and the flexible cloth is arranged on the inner side wall of the first protection frame and the inner side wall of the second protection frame. The pull rod can automatically rebound, and is convenient to use, adjustable in height, wide in application range, stable in structure and large in cargo capacity.

Description

Technical Field

[0001] The utility model relates to the field of trolleys, in particular to a flatbed cargo trolley. Background Art

[0002] The existing patent (Announcement No.: 202320765869.X) proposes a flatbed cargo trolley, the trolley assembly includes: a base, a push rod is arranged on the top of the base, wheels are arranged at the bottom of the base, a push rod storage shaft is arranged between the base and the push rod, a protective assembly is arranged on the top of the base, the protective assembly includes a cross bar, and the cross bars are arranged on the top of the base. There are multiple cross bars, and a folding telescopic frame is arranged between the base and the cross bar. However, the cargo capacity and cargo height of the above device are limited, there are disadvantages, and improvement is needed. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a flatbed cargo trolley in which a flexible cloth is arranged on the inner walls of a No. 1 protective frame and a No. 2 protective frame, so as to prevent small items from falling when being transported. The pull rod can automatically rebound, the height is adjustable, the cargo capacity is large, and the cargo height is higher.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A flatbed cargo cart comprises a load-bearing bottom plate, a No. 1 protective frame, a No. 2 protective frame, and a flexible cloth. The upper portion of the load-bearing bottom plate is connected to two No. 1 right-angle support plates, which are symmetrically arranged. The inner side of the No. 1 right-angle support plate is connected to the flexible cloth. The upper portion of the No. 1 right-angle support plate is connected to the No. 1 protective frame. The lower portion of the No. 1 protective frame is connected to two No. 3 right-angle support plates, which are symmetrically arranged. The inner side of the No. 1 protective frame is connected to the flexible cloth. The upper portion of the No. 1 protective frame is connected to two No. 2 right-angle support plates, which are symmetrically arranged. The inner side of the No. 2 right-angle support plate is connected to the flexible cloth. The upper portion of the No. 2 right-angle support plate is connected to the No. 2 protective frame. The No. 2 right-angle support plate has the same structure as the No. 1 right-angle support plate. The inner side of the frame is connected with a flexible cloth, the lower part of the No. 2 protective frame is connected with the No. 4 right-angle support plate, the lower part of the No. 4 right-angle support plate is connected with the No. 1 protective frame, the inner side of the No. 4 right-angle support plate is connected with a flexible cloth, the No. 4 right-angle support plate has the same structure as the No. 3 right-angle support plate, the lower part of the No. 2 protective frame is connected with two No. 2 telescopic frames, the No. 2 telescopic frames are symmetrically arranged, the lower part of the No. 2 telescopic frame is connected with the No. 1 protective frame, the other side of the No. 2 telescopic frame is connected with the No. 2 right-angle support plate, the lower part of the No. 1 protective frame is connected with the No. 1 telescopic frame, the lower part of the No. 1 telescopic frame is connected with the load-bearing base plate, one side of the No. 1 telescopic frame is connected with the No. 1 right-angle support plate, the No. 1 telescopic frame has the same structure as the No. 2 telescopic frame, and a plurality of universal wheels are connected to the bottom of the load-bearing base plate, and the universal wheels are evenly distributed at the bottom of the load-bearing base plate.

[0006] The utility model described in the telescopic frame No. 1 comprises a connecting plate No. 1, a connecting plate No. 2 and a positioning adjustment plate, one side of the positioning adjustment plate is connected to two connecting plates No. 1 through a rotating shaft, the connecting plates No. 1 are symmetrically arranged, the other end of the connecting plate No. 1 is connected to a connecting ear at the lower part of a No. 1 protective frame through a rotating shaft, the outer side of the connecting plate No. 1 is connected to a connecting plate No. 2 through a rotating shaft, the connecting plates No. 2 are symmetrically arranged, the lower part of the connecting plate No. 2 is connected to a connecting ear at the upper part of a load-bearing bottom plate through a rotating shaft, one end of the positioning adjustment plate is connected to a right-angle supporting plate No. 1, one end of the positioning adjustment plate is provided with two fixed plug plates, the fixed plug plates are symmetrically arranged, and the outer side of the fixed plug plates is provided with a card block.

[0007] The utility model describes a No. 1 right-angle support plate with a No. 1 column at one end, and two No. 1 slide grooves are provided on the inner side of the No. 1 column. The No. 1 slide grooves are symmetrically arranged, and the inner side of the No. 1 slide groove is connected to a positioning device, and the positioning device is composed of a positioning rod and a No. 2 spring. The outer side of the positioning rod is connected to the No. 1 slide groove, and the positioning rod cooperates with the No. 1 slide groove. The positioning rod slides in the No. 1 slide groove. The upper part of the No. 1 slide groove is provided with an auxiliary slide groove, and the outer side of the positioning rod is provided with a pressure plate, and the pressure plate cooperates with the auxiliary slide groove. The outer side of the pressure plate is connected to the auxiliary slide groove, and the pressure plate slides in the auxiliary slide groove. One end of the positioning rod has an auxiliary protrusion, and the outer side of the auxiliary protrusion is connected to the No. 2 spring, and the outer side of the No. 2 spring is connected to the No. 1 slide groove. The No. 2 spring slides in the No. 1 slide groove, and the other end of the positioning rod is connected to a No. 1 protective frame.

[0008] The utility model discloses a right angle supporting plate No. 1 with a second column at the other end, two No. 2 slide grooves are arranged inside the second column, and the No. 2 slide grooves are symmetrically arranged, and the inner side of the No. 2 slide groove is connected to the positioning device, and the outer side of the No. 2 column is provided with a fixed socket, and the inner side of the fixed socket is connected to the positioning adjustment plate, and the positioning adjustment plate slides in the fixed socket, and the inner side of the fixed socket is provided with a fixed slot, and the outer side of the fixed slot is provided with two card holes, and the card holes are symmetrically arranged, and the fixed slot cooperates with the fixed plug-in plate, and the inner side of the fixed slot is connected to the fixed plug-in plate, and the fixed plug-in plate slides in the fixed slot, and the inner side of the card hole is connected to the card block, and the card hole is adapted to the card block, and the card block slides in the card hole, and the outer side of the No. 3 right angle supporting plate is provided with two No. 3 columns, and the inner side of the No. 3 column is provided with two No. 3 slide grooves, and the No. 3 slide grooves are symmetrically arranged, and the inner side of the No. 3 slide groove is connected to the positioning device, and the outer side of the load-bearing bottom plate is connected to the pull rod connecting seat, and the inner side of the pull rod connecting seat is connected to the pull rod through a rotating shaft, and the upper part of the pull rod connecting seat is provided with an auxiliary vertical plate, and the upper part of the auxiliary vertical plate is connected to a No. 1 spring, and the other end of the No. 1 spring is connected to the pull rod. Beneficial Effects

[0009] The utility model provides a flexible cloth arranged on the inner side walls of the first and second protection frames, which can prevent small items from falling when being transported. The pull rod has a pulling force toward the vehicle plate under the action of the first spring, so that the pull rod can automatically rebound, which is convenient for use.

[0010] The utility model can adjust the height of the vehicle getting off according to actual conditions under the action of the first telescopic frame and the second telescopic frame, and the height is adjustable and has a wide application range.

[0011] The utility model supports and shapes the flexible cloth under the interaction of the first right-angle support plate, the second right-angle support plate, the third right-angle support plate and the fourth right-angle support plate, thereby enhancing the stability of the entire device and making the overall structure more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of a flatbed cargo trolley being opened.

[0013] Figure 2 The utility model is a front view of a flatbed cargo trolley opened.

[0014] Figure 3 The utility model is a schematic diagram of a folding flatbed cargo cart.

[0015] Figure 4 The utility model is a schematic structural diagram of a positioning device for a flatbed cargo cart.

[0016] Figure 5 This is a schematic structural diagram of a No. 1 right-angle support plate and a No. 3 right-angle support plate of a flatbed cargo trolley described in the utility model.

[0017] Figure 6 This is a schematic diagram of the structure of a right-angle support plate No. 1 of a flatbed cargo trolley described in the utility model.

[0018] Figure 7 It is a partial cross-sectional view of the structure of a flatbed cargo trolley described in the utility model.

[0019] Figure 8 The utility model is a schematic diagram of a positioning rod structure of a flatbed cargo trolley. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0021] Embodiment 1:

[0022] A flatbed cargo cart comprises a load-bearing bottom plate 01, a first protective frame 02, a second protective frame 03, and a flexible cloth 04. The upper part of the load-bearing bottom plate 01 is connected to two first right-angle support plates 05, the first right-angle support plates 05 are symmetrically arranged, the inner side of the first right-angle support plate 05 is connected to the flexible cloth 04, the upper part of the first right-angle support plate 05 is connected to the first protective frame 02, the lower part of the first protective frame 02 is connected to two third right-angle support plates 06, the third right-angle support plates 06 are symmetrically arranged, the inner side of the first protective frame 02 is connected to the flexible cloth 04, the upper part of the first right-angle support plate 05 is connected to the first protective frame 02, the lower part of the first protective frame 02 is connected to two third right-angle support plates 06, the third right-angle support plates 06 are symmetrically arranged, the inner side of the first protective frame 02 is connected to the flexible cloth 04, the upper part of the first right-angle support plate 05 is connected to the first protective frame 02, the lower part of the first protective frame 02 is connected to two third right-angle support plates 06, the third right-angle support plates 06 are symmetrically arranged, the inner side of the first protective frame 02 is connected to the flexible cloth 04, the upper part of the first right-angle support plate 05 is connected to the first protective frame 02, the lower part of the first protective frame 02 is connected to the second right-angle support plate ... The side is connected with the flexible cloth 04, the upper part of the No. 1 protection frame 02 is connected with two No. 2 right-angle support plates 51, the No. 2 right-angle support plates 51 are symmetrically arranged, the inner side of the No. 2 right-angle support plate 51 is connected with the flexible cloth 04, the upper part of the No. 2 right-angle support plate 51 is connected with the No. 2 protection frame 03, the No. 2 right-angle support plate 51 has the same structure as the No. 1 right-angle support plate 05, the inner side of the No. 2 protection frame 03 is connected with the flexible cloth 04, the lower part of the No. 2 protection frame 03 is connected with the No. 4 right-angle support plate 61, and the lower part of the No. 4 right-angle support plate 61 is connected with the No. 1 The protective frame 02, the inner side of the fourth right-angle support plate 61 is connected to the flexible cloth 04, the fourth right-angle support plate 61 has the same structure as the third right-angle support plate 06, the lower part of the second protective frame 03 is connected to two second telescopic frames 71, the second telescopic frames 71 are symmetrically arranged, the lower part of the second telescopic frame 71 is connected to the first protective frame 02, and the other side of the second telescopic frame 71 is connected to the second right-angle support plate 51, the lower part of the first protective frame 02 is connected to the first telescopic frame 07, the lower part of the first telescopic frame 07 is connected to the load-bearing bottom plate 01, and the first telescopic frame 07 is connected to the load-bearing bottom plate 01. One side of the telescopic frame 07 is connected to the No. 1 right-angle support plate 05. The No. 1 telescopic frame 07 has the same structure as the No. 2 telescopic frame 71. A plurality of universal wheels 08 are connected to the bottom of the load-bearing base plate 01. The universal wheels 08 are evenly distributed on the bottom of the load-bearing base plate 01. The flexible cloth 04 is arranged on the inner walls of the No. 1 protective frame 02 and the No. 2 protective frame 03 to prevent small items from falling when transporting. Under the action of the No. 1 spring 12, the pull rod 09 has a pulling force in the direction of the vehicle plate, so that the pull rod 09 can automatically rebound for easy use.

[0023] Embodiment 2:

[0024] The utility model No. 1 telescopic frame 07 comprises a No. 1 connecting plate 13, a No. 2 connecting plate 14, and a positioning and adjusting plate 15. One side of the positioning and adjusting plate 15 is connected to two No. 1 connecting plates 13 through a rotating shaft. The No. 1 connecting plate 13 is symmetrically arranged. The other end of the No. 1 connecting plate 13 is connected to the lower connecting ear of the No. 1 protective frame 02 through a rotating shaft. The outer side of the No. 1 connecting plate 13 is connected to the No. 2 connecting plate 14 through a rotating shaft. The No. 2 connecting plate 14 is symmetrically arranged. The lower part of the No. 2 connecting plate 14 is connected to the upper connecting ear of the load-bearing base plate 01 through a rotating shaft. One end of the positioning and adjusting plate 15 is connected to the No. 1 right-angle supporting plate 05. One end of the positioning and adjusting plate 15 is provided with two fixed plug plates 16. The fixed plug plates 16 are symmetrically arranged. The outer side of the fixed plug plates 16 is provided with a clamping block 17. Under the action of the No. 1 telescopic frame 07 and the No. 2 telescopic frame 71, the height of getting off the vehicle can be adjusted according to actual conditions. The height is adjustable and has a wide range of applications.

[0025] Embodiment 3:

[0026] The utility model has a No. 1 right-angle support plate 05 at one end, and the No. 1 column 19 has two No. 1 slide grooves 33 on the inner side of the No. 1 column 19. The No. 1 slide grooves 33 are symmetrically arranged. The inner side of the No. 1 slide groove 33 is connected to the positioning device 21, and the positioning device 21 is composed of a positioning rod 18 and a No. 2 spring 32. The outer side of the positioning rod 18 is connected to the No. 1 slide groove 33. The positioning rod 18 cooperates with the No. 1 slide groove 33. The positioning rod 18 slides in the No. 1 slide groove 33. The upper part of the No. 1 slide groove 33 has There is an auxiliary slide groove 27, and a pressure plate 28 is provided on the outside of the positioning rod 18. The pressure plate 28 cooperates with the auxiliary slide groove 27. The outside of the pressure plate 28 is connected to the auxiliary slide groove 27. The pressure plate 28 slides in the auxiliary slide groove 27. One end of the positioning rod 18 has an auxiliary protrusion 34. The outside of the auxiliary protrusion 34 is connected to the second spring 32. The outside of the second spring 32 is connected to the first slide groove 33. The second spring 32 slides in the first slide groove 33. The other end of the positioning rod 18 is connected to the first protective frame 02.

[0027] Embodiment 4:

[0028] The utility model has a No. 2 column 20 at the other end of the No. 1 right-angle support plate 05, and the No. 2 column 20 has two No. 2 slide grooves 22 inside, and the No. 2 slide grooves 22 are symmetrically arranged. The inner side of the No. 2 slide groove 22 is connected to the positioning device 21, and the No. 2 column 20 has a fixed socket 24 on the outside, and the inner side of the fixed socket 24 is connected to the positioning adjustment plate 15, and the positioning adjustment plate 15 slides in the fixed socket 24. The inner side of the fixed socket 24 has a fixed slot 25, and the outer side of the fixed slot 25 has two card holes 26, and the card holes 26 are symmetrically arranged. The fixed slot 25 cooperates with the fixed plugboard 16, and the fixed slot 25 is connected to the fixed plugboard 16 inside, and the fixed plugboard 16 slides in the fixed slot 25. The inner side of the card hole 26 is connected to the card block 17, and the card hole 26 is adapted to the card block 17. The card block 17 is Sliding in the card hole 26, the outer side of the No. 3 right-angle support plate 06 is provided with two No. 3 columns 29, and the interior of the No. 3 columns 29 is provided with two No. 3 slide grooves 30, the No. 3 slide grooves 30 are symmetrically arranged, the inner side of the No. 3 slide grooves 30 is connected to the positioning device 21, the outer side of the load-bearing base plate 01 is connected to the pull rod connecting seat 10, the inner side of the pull rod connecting seat 10 is connected to the pull rod 09 through a rotating shaft, the upper part of the pull rod connecting seat 10 is provided with an auxiliary vertical plate 11, the upper part of the auxiliary vertical plate 11 is connected to the No. 1 spring 12, and the other end of the No. 1 spring 12 is connected to the pull rod 09, under the interaction of the No. 1 right-angle support plate 05, the No. 2 right-angle support plate 51, the No. 3 right-angle support plate 06, and the No. 4 right-angle support plate 61, the flexible cloth 04 is supported and shaped, the stability of the entire device is enhanced, and the overall structure is more reasonable.

[0029] Embodiment 5:

[0030] Installation steps: When in use, pull the No. 1 protective frame 02 upwards according to the actual situation, press the positioning devices 21 on the No. 1 right-angle support plate 05 and the No. 3 right-angle support plate 06 toward the middle respectively, install the No. 1 right-angle support plate 05 and the No. 3 right-angle support plate 06 between the load-bearing base plate 01 and the No. 1 protective frame 02, and then insert the fixed plug plate 16 into the fixed socket 24 for fixation. If the cargo to be pulled is too much, you can also pull the No. 2 protective frame 03 upwards, repeat the above operation, extend the height of the trolley protective plate, and increase the cargo capacity of the trolley. It is simple to operate and easy to use. It supports and shapes the flexible cloth 04, enhances the stability of the entire device, and makes the overall structure more reasonable. Under the action of the No. 1 spring 12, the pull rod 09 has a pulling force in the direction of the vehicle plate, so that the pull rod 09 can automatically rebound, and the staff does not need to bend over, which is convenient for use.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A flatbed cargo trolley, characterized by : comprising a load-bearing base plate (01), a No. 1 protection frame (02), a No. 2 protection frame (03), and a flexible cloth (04), wherein the upper portion of the load-bearing base plate (01) is connected to two No. 1 right-angle support plates (05), the No. 1 right-angle support plates (05) are symmetrically arranged, the inner side of the No. 1 right-angle support plate (05) is connected to the flexible cloth (04), the upper portion of the No. 1 right-angle support plate (05) is connected to the No. 1 protection frame (02), the lower portion of the No. 1 protection frame (02) is connected to two No. 3 right-angle support plates (06), the No. 3 right-angle support plates (06) are symmetrically arranged, the inner side of the No. 1 protection frame (02) is connected to the flexible cloth (04), the upper part of the No. 1 protection frame (02) is connected to two No. 2 right-angle support plates (51), the No. 2 right-angle support plate (51) is symmetrically arranged, the inner side of the No. 2 right-angle support plate (51) is connected to the flexible cloth (04), the upper part of the No. 2 right-angle support plate (51) is connected to the No. 2 protection frame (03), the No. 2 right-angle support plate (51) has the same structure as the No. 1 right-angle support plate (05), the inner side of the No. 2 protection frame (03) is connected to the flexible cloth ( 04), the lower part of the second protection frame (03) is connected to the fourth right-angle support plate (61), the lower part of the fourth right-angle support plate (61) is connected to the first protection frame (02), the inner side of the fourth right-angle support plate (61) is connected to the flexible cloth (04), the fourth right-angle support plate (61) has the same structure as the third right-angle support plate (06), the lower part of the second protection frame (03) is connected to two second telescopic frames (71), the second telescopic frames (71) are symmetrically arranged, and the lower part of the second telescopic frame (71) is connected to the first protection frame (02) The other side of the No. 2 telescopic frame (71) is connected to the No. 2 right-angle support plate (51), the lower part of the No. 1 protective frame (02) is connected to the No. 1 telescopic frame (07), the lower part of the No. 1 telescopic frame (07) is connected to the load-bearing base plate (01), one side of the No. 1 telescopic frame (07) is connected to the No. 1 right-angle support plate (05), the No. 1 telescopic frame (07) has the same structure as the No. 2 telescopic frame (71), and the bottom of the load-bearing base plate (01) is connected to a plurality of universal wheels (08), and the universal wheels (08) are evenly distributed on the bottom of the load-bearing base plate (01).

2. A flatbed cargo trolley according to claim 1, characterized in that The No. 1 telescopic frame (07) comprises a No. 1 connecting plate (13), a No. 2 connecting plate (14), and a positioning adjustment plate (15). One side of the positioning adjustment plate (15) is connected to the two No. 1 connecting plates (13) via a rotating shaft. The No. 1 connecting plates (13) are symmetrically arranged. The other end of the No. 1 connecting plate (13) is connected to the lower connecting ear of the No. 1 protective frame (02) via a rotating shaft. The outer side of the No. 1 connecting plate (13) is connected to the No. 2 connecting plate (14) via a rotating shaft. The No. 2 connecting plate (14) is symmetrically arranged. The lower part of the No. 2 connecting plate (14) is connected to the upper connecting ear of the load-bearing base plate (01) via a rotating shaft. One end of the positioning adjustment plate (15) is connected to the No. 1 right-angle support plate (05). One end of the positioning adjustment plate (15) has two fixed plug plates (16). The fixed plug plates (16) are symmetrically arranged. The outer side of the fixed plug plates (16) has a clamping block (17).

3. A flatbed cargo trolley according to claim 2, characterized in that The first right-angle support plate (05) has a first column (19) at one end, and the first column (19) has two first slide grooves (33) on the inner side. The first slide grooves (33) are symmetrically arranged. The inner side of the first slide groove (33) is connected to the positioning device (21). The positioning device (21) is composed of a positioning rod (18) and a second spring (32). The outer side of the positioning rod (18) is connected to the first slide groove (33). The positioning rod (18) cooperates with the first slide groove (33). The positioning rod (18) slides in the first slide groove (33). The upper part of the first slide groove (33) has an auxiliary The auxiliary slide groove (27), the outer side of the positioning rod (18) has a pressure plate (28), the pressure plate (28) cooperates with the auxiliary slide groove (27), the outer side of the pressure plate (28) is connected to the auxiliary slide groove (27), the pressure plate (28) slides in the auxiliary slide groove (27), one end of the positioning rod (18) has an auxiliary protrusion (34), the outer side of the auxiliary protrusion (34) is connected to the second spring (32), the outer side of the second spring (32) is connected to the first slide groove (33), the second spring (32) slides in the first slide groove (33), and the other end of the positioning rod (18) is connected to the first protective frame (02).

4. A flatbed cargo trolley according to claim 3, characterized in that The other end of the No. 1 right-angle support plate (05) is provided with a No. 2 column (20), the No. 2 column (20) has two No. 2 slide grooves (22) inside, the No. 2 slide grooves (22) are symmetrically arranged, the inner side of the No. 2 slide grooves (22) is connected to the positioning device (21), the outer side of the No. 2 column (20) is provided with a fixed socket (24), the inner side of the fixed socket (24) is connected to the positioning adjustment plate (15), the positioning adjustment plate (15) slides in the fixed socket (24), and the fixed socket (24) The inner side of the fixed slot (25) is provided with two clamping holes (26) on the outer side of the fixed slot (25). The clamping holes (26) are symmetrically arranged. The fixed slot (25) matches with the fixed plug plate (16). The inner side of the fixed slot (25) is connected to the fixed plug plate (16). The fixed plug plate (16) slides in the fixed slot (25). The inner side of the clamping hole (26) is connected to the clamping block (17). The clamping hole (26) is adapted to the clamping block (17). The clamping block (17) slides in the clamping hole (26).

5. A flatbed cargo trolley according to claim 1, characterized in that The outer side of the No. 3 right-angle support plate (06) is provided with two No. 3 columns (29), the inner side of the No. 3 columns (29) is provided with two No. 3 slide grooves (30), the No. 3 slide grooves (30) are symmetrically arranged, the inner side of the No. 3 slide grooves (30) is connected to the positioning device (21), the outer side of the load-bearing base plate (01) is connected to the pull rod connection seat (10), the inner side of the pull rod connection seat (10) is connected to the pull rod (09) through a rotating shaft, the upper part of the pull rod connection seat (10) is provided with an auxiliary vertical plate (11), the upper part of the auxiliary vertical plate (11) is connected to the No. 1 spring (12), and the other end of the No. 1 spring (12) is connected to the pull rod (09).

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