Mounting bracket

Abstract

A fastening bracket comprising a boom tube (5), wherein at each of the two ends of the boom tube (5) there are provided a clamping assembly which carries out a clamping operation by closing a convex clamping jaw (6) and a concave clamping jaw (8) against each other, and a lashing assembly which achieves lashing and connection by means of a ratchet strap (2), characterized in that the clamping assembly comprises the convex clamping jaw (6) and the concave clamping jaw (8), which are capable of being elastically rotated and separated relative to each other by the cooperation of a pivot shaft (7) and a torsion spring (13), wherein the convex clamping jaw (6) is fastened to an end region of the boom tube (5), wherein a lead screw (11) extends out of the convex clamping jaw (6) and is connected to the boom tube (5), wherein an upwardly inclined inclined web is provided in an interior space of the concave clamping jaw (8). (17) is providedwherein an end portion of the lead screw (11) is rotatably connected to a T-nut (12) via threads, wherein the lower end of an end transverse flange of the T-nut (12) is directly opposite an inclined surface of the inclined web (17).

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of holder connections, specifically a fastening holder. STATE OF THE ART

[0002] A bracket, as a connector for connecting a pair of structures, is most commonly used for lashing and securing frame devices such as bicycles, scaffolding, etc. during transport. The two ends of the bracket are each connected to a fixing part and a transport part.

[0003] The existing patent specification CN112172685B "Frame Holder" discloses a device for connecting two objects, in particular for securing a bicycle frame to a bicycle carrier. It comprises: a base body defining a longitudinal axis; a clamping device arranged at an end region of the base body for connecting the base body to a first object, in particular to a bracket of a bicycle carrier. The clamping device comprises at least two clamping elements which form a receptacle for the first object between them and are movable relative to one another between a release position and a clamping position. In the release position, the clamping device can be attached to or removed from the first object, and in the clamping position, the clamping device firmly grips the first object.

[0004] In an existing holder, a pair of clamping devices that rotate relative to each other is usually used on the clamping side. The clamping effect is achieved by fixing the relative rotational position. In the prior art, however, the rotation for closing usually requires manual intervention. As in the above-mentioned patent, the fixation is achieved by pressing a pressure element. However, after the fixation is released, the two clamping devices separate automatically and require manual intervention for the re-closing process, thus preventing an automatic closing process.

[0005] In the prior art, fastening clamps are typically used to fix bicycles during transport. These clamp the bicycles in a clamping manner, thereby ensuring that numerous bicycles are securely fixed and preventing the bicycles from shifting or wobbling during transport.

[0006] Restraint devices are known from existing patents in which a bicycle is held in place by the interlocking of a toothed belt and a locking plate, wherein the teeth of the toothed belt and the locking plate are inclined in opposite directions to prevent the toothed belt from becoming loose automatically.

[0007] However, this arrangement of fastening clamps based on toothed belt lashing lacks an actual fastening element. The fastening and clamping of a bicycle depends entirely on the tension of the toothed belt. Therefore, the toothed belt passes through the upper end of the locking plate when clamped, and a considerable tensile force must be applied to the toothed belt to lash and secure a bicycle with the toothed belt. Since there is no adjustment option for the pre-tension force for clamping, the fixation often becomes unintentionally loose during transport. DISCLOSURE OF THE INVENTION

[0008] The present invention is based on the object of providing a mounting bracket in order to solve the mentioned problem in the prior art.

[0009] According to one aspect of the present invention, the object is achieved by the following technical solution: A mounting bracket comprises a boom tube, wherein at each end of the boom tube there are provided a clamping assembly which performs a clamping operation by closing a convex clamping jaw and a concave clamping jaw against each other, and a lashing assembly which achieves lashing and connection by means of a ratchet strap, wherein the clamping assembly comprises the convex clamping jaw and the concave clamping jaw, which are capable of being elastically rotated and separated relative to each other by the cooperation of a pivot shaft and a torsion spring, wherein the convex clamping jaw is fastened to an end region of the boom tube, wherein a lead screw extends from the convex clamping jaw and is connected to the boom tube, wherein an upwardly inclined inclined web is provided in an interior space of the concave clamping jaw, wherein an end region of the lead screw is rotatably connected to a T-nut via threads,wherein the lower end of an end transverse flange of the T-nut is transversely directly opposite an inclined surface of the inclined web.

[0010] Preferably, the lashing assembly comprises a ratchet fastening block, wherein one end of the boom tube is provided with an inner plug which is provided with a recess at one end region, wherein the boom tube is inserted into the ratchet fastening block, and wherein a projection is provided on the ratchet fastening block which engages in the recess and is connected thereto.

[0011] Preferably, a sleeve rod and a locking assembly are provided on the ratchet mounting block, wherein one end of the ratchet strap is rotatably mounted on the sleeve rod, while the other end of the ratchet strap is fixed to the locking assembly.

[0012] Preferably, the locking assembly comprises a lever engaging a ratchet on the ratchet strap and a button for controlling the relative rotational movement of the lever, with a locking latch assembly being provided on the ratchet mounting block to control the movement of the button.

[0013] Preferably, it is provided that the convex clamping jaw and the concave clamping jaw are rotatably connected via the pivot shaft, wherein the torsion spring is arranged at both ends of the pivot shaft, which drives the convex clamping jaw and the concave clamping jaw to rotate relative to each other and thus to separate from each other, wherein an interior space of an end of the boom tube facing the convex clamping jaw is provided with a weld seat to which the lead screw is fixed, wherein the lead screw passes through the convex clamping jaw and runs into an interior space between the convex clamping jaw and the concave clamping jaw.

[0014] Preferably, it is provided that an end region of the boom tube is provided with a pipe plug and an end region of the lead screw is provided with a mounting plate which bears against the welding seat, wherein the pipe plug and the mounting plate are fixed to the welding seat by a fastening bolt.

[0015] Preferably, the T-nut is provided with a threaded through-hole through which the lead screw rotates via a thread. One end portion of the lead screw is provided with a stop ring. Preferably, the end transverse flange of the T-nut is provided with a circularly rounded surface on a side directly opposite the inclined web. Compared to the prior art, the present invention is characterized by the following advantageous effects: By providing the torsion spring, the present invention achieves a resilient rotational movement of the convex and concave clamping jaws and their separation from each other, thereby automatically releasing the clamping assembly. At the same time, the interaction of the T-nut and the lead screw causes a transverse movement of the T-nut. The transverse pressure exerted by the T-nut on the inclined web rotates the convex and concave clamping jaws relative to each other and thus closes them, achieving a firm clamping effect. Thus, by simply controlling the rotation of the lead screw, both the opening / closing and the clamping function of the clamping assembly can be achieved, which significantly improves operating convenience.

[0016] The present invention is further based on the object of providing a bicycle fastening clamp in order to further solve the mentioned problem in the prior art.

[0017] According to another aspect of the present invention, the object is achieved by the following technical solution: A bicycle fastening clamp comprises a fastening clamp unit, wherein a ratchet strap is provided at one end of the fastening clamp unit and a first locking plate is provided at the other end of the fastening clamp unit, wherein a first insertion slot is formed between the first locking plate and the fastening clamp unit, through which the ratchet strap can be passed and inserted, wherein a toothed rack is provided on the first locking plate, the teeth of which are inclined opposite to the direction of inclination of the teeth on the ratchet strap, wherein a second locking plate is provided on the fastening clamp unit, which is located at the lower end of the first locking plate, wherein the second locking plate is rotatably mounted on the fastening clamp unit by means of an elastic torsion spring, wherein one end of the second locking plate extends to the lower end of the first locking plate,while the other end of the second detent plate extends to the back of the rack, and wherein one end portion of the second detent plate is provided with a plurality of thrust teeth whose inclination direction is the same as that of the rack.,

[0018] Preferably, a limiting block is provided on the first locking plate and a height-adjustable pressure frame is provided in an interior space of the fastening clamp unit, wherein the lower end of the pressure frame presses on the upper end of the limiting block.

[0019] Preferably, the fastening clamp unit includes a locking latch, the other end of which projects into the interior of the fastening clamp unit and is rotatably connected to a cam, which cam presses against the pressure frame. Preferably, a pair of symmetrically arranged clamping shells is provided on one side of the fastening clamp unit, which enclose a clamping interior. The clamping shells adjust the inner diameter of the clamping interior via a tightening device.

[0020] Preferably, the lower end of the fastening clamp unit is provided with a pivot shaft on which the second locking plate is rotatably mounted by means of an elastic torsion spring.

[0021] Preferably, a positioning block is provided on the fastening clamp unit, which is located at the lower end of the first locking plate, wherein the other end of the elastic torsion spring is provided with a connecting frame which is plugged onto the positioning block.

[0022] Preferably, the thrust teeth are provided in a number of at least two.

[0023] Preferably, a second insertion slot is provided between the second locking plate and the first locking plate.

[0024] Compared to the prior art, the present invention is characterized by the following advantageous effects: The present invention achieves this by providing a second locking plate rotatably mounted at the lower end of an existing fastening clamp unit. The rotational movement of the second locking plate causes the push teeth at their end region to engage with the ratchet strap extending to the outside of the first locking plate. Thus, the push teeth pull the ratchet strap due to the rotational movement of the second locking plate, which is then further stretched, allowing the clamping force to be adjusted according to the set tooth spacing. This allows for pre-tensioning for clamping and improves clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In it show Fig. 1 is a schematic three-dimensional structural view of an embodiment of the present invention; Fig. 2 is a schematic three-dimensional structural assembly drawing of the T-nut and skew bar according to the present invention; Fig. 3 is a three-dimensional structural exploded view of the present invention; Fig. 4 is a sectional view of the inclined web in the concave clamping jaw according to the present invention; Fig. 5 is a side view of the ratchet mounting block according to the present invention; Fig. 6 is a schematic three-dimensional structural view of the inner plug according to the present invention; Fig. 7 is a schematic three-dimensional structural view of another embodiment of the present invention; Fig. 8 is a schematic structural view of the present invention; Fig. 9 is a schematic three-dimensional structural assembly drawing of the first locking plate and the second locking plate according to the present invention; Fig. 10 is a schematic structural assembly drawing of the cam according to the present invention; Fig. 11 is a schematic structural view of the assembly and limitation of the first locking plate according to the present invention; Fig. 12 is a schematic three-dimensional structural assembly drawing of the cam and pressure frame according to the present invention; Fig. 13 is a schematic three-dimensional structural view of the second locking plate according to the present invention. Reference symbol:

[0026] 1. Ratchet mounting block; 2. Ratchet strap; 3. Locking assembly; 4. Latch assembly; 5. Boom tube; 6. Convex jaw; 7. Pivot shaft; 8. Concave jaw; 9. Weld seat; 10. Tube plug; 11. Lead screw; 12. T-nut; 13. Torsion spring; 14. Inner plug; 15. Mounting plate; 16. Stop ring; 17. Tapered web; 18. Projection; 19. Recess; 20. Mounting bolt; 21. Threaded through hole. 101. Fastening clamp assembly; 102. Clamping shell; 103. Tightening device; 104. First detent plate; 105. Ratchet strap; 106. Locking latch; 107. First insertion slot; 108. Second detent plate; 109. Cam; 110. Pressure frame; 111. Pivot shaft; 112. Push tooth; 113. Connecting frame; 114. Limit block; 116. Second insertion slot; 117. Elastic torsion spring; 118. Positioning block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Hereinafter, the technical solutions of the embodiments of the present invention will be fully and clearly explained in such embodiments with reference to the accompanying drawings. It should be understood that the described embodiments represent some of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art from the embodiments of the present invention without inventive steps are also within the scope of the present invention.

[0028] It will be Fig. 1 to 6. The present invention provides a technical solution: A mounting bracket comprises a boom tube 5. At both ends of the boom tube 5, a clamping assembly that performs a clamping operation by closing a convex clamping jaw 6 and a concave clamping jaw 8 against each other, and a lashing assembly that achieves lashing and connection through a ratchet strap 2 are provided. The lashing assembly comprises a ratchet mounting block 1. One end of the boom tube 5 is provided with an inner plug 14, which has a recess 19 at one end region. The boom tube 5 is inserted into the ratchet mounting block 1. A projection 18 is provided on the ratchet mounting block 1, which engages and is connected to the recess 19. A sleeve rod and a locking assembly 3 are provided on the ratchet mounting block 1.One end of the ratchet strap 2 is rotatably mounted on the sleeve rod, while the other end of the ratchet strap 2 is fixed to the locking assembly 3. The locking assembly 3 includes a lever that engages a ratchet on the ratchet strap 2 and a button for controlling the relative rotational movement of the lever. A locking latch assembly 4 is provided on the ratchet mounting block 1 to control the movement of the button.

[0029] By engaging and connecting the recess 19 and the projection 18, the inner plug 14 is connected to the ratchet mounting block 1 and the boom tube 5, whereby rotation of the ratchet mounting block 1 causes the boom tube 5 to rotate. At the same time, by attaching and locking the ratchet strap 2 to the locking assembly 3 and by the interaction of the lever with the ratchet, the position of the ratchet strap 2 is fixed, thereby achieving the task of lashing and connecting to one end of the mounting bracket. The opening and closing of the ratchet strap 2 is controlled by controlling the angle of the lever via the button. By providing the locking latch assembly 4, which limits the button, arbitrary opening and closing is prevented.

[0030] The specific design of the locking latch assembly 4 and the locking assembly 3 is described in detail below.

[0031] The clamping assembly includes the convex jaw 6 and the concave jaw 8, which are capable of elastically rotating and separating relative to each other through the cooperation of a pivot shaft 7 and a torsion spring 13. The convex jaw 6 and the concave jaw 8 are rotatably connected via the pivot shaft 7. The torsion spring 13 is arranged at both ends of the pivot shaft 7, driving the convex jaw 6 and the concave jaw 8 to rotate relative to each other and thus to separate from each other.

[0032] The torsion spring 13 causes the relative rotational movement and separation of the convex clamping jaw 6 and the concave clamping jaw 8, thereby facilitating the clamping process. Automatic release can be achieved under the action of the torsion spring 13. The convex clamping jaw 6 is attached to an end region of the boom tube 5. A lead screw 11 extends from the convex clamping jaw 6 and is connected to the boom tube 5. An interior space of an end of the boom tube 5 facing the convex clamping jaw 6 is provided with a weld seat 9 to which the lead screw 11 is fixed. The lead screw 11 passes through the convex clamping jaw 6 and extends into an inner space between the convex clamping jaw 6 and the concave clamping jaw 8. An end portion of the boom tube 5 is provided with a tube plug 10 and an end portion of the lead screw 11 is provided with a mounting plate 15 which bears against the welding seat 9.The pipe plug 10 and the mounting plate 15 are fixed to the weld seat 9 by a fastening bolt 20. Through the interaction of the weld seat 9 and the fastening bolt 20, the lead screw 11 and the convex clamping jaw 6 are mounted to the boom tube 5.

[0033] An upwardly inclined inclined web 17 is provided in an interior of the concave clamping jaw 8. One end region of the lead screw 11 is rotatably connected to a T-nut 12 via threads. The lower end of an end-side transverse flange of the T-nut 12 lies transversely directly opposite an inclined surface of the inclined web 17. A threaded through-bore 21 penetrating the T-nut 12 is provided, through which the lead screw 11 rotatably passes via threads. One end region of the lead screw 11 is provided with a stop ring 16. The end-side transverse flange of the T-nut 12 is provided with a circularly rounded surface on a side directly opposite the inclined web 17.

[0034] The rotation of the end portion of the lead screw 11 in the threaded through hole 21 causes a transverse displacement of the T-nut 12, thereby controlling the transverse pressure exerted by the T-nut 12 on the inclined web 17 to control the rotation and clamping of the concave clamping jaw 8. The stop ring 16 prevents the T-nut 12 from detaching from the end portion of the lead screw 11. By providing the circularly rounded surface, the pressure surface is increased.

[0035] Working principle: Under the action of the torsion spring 13, the convex clamping jaw 6 and the concave clamping jaw 8 rotate relative to each other and thus separate from each other, keeping the clamp assembly open in its initial state and facilitating clamp assembly. After assembly, rotating the ratchet mounting block 1 rotates the boom tube 5, which then rotates the lead screw 11. The rotation of the end portion of the lead screw 11 in the threaded through hole 21 causes the transverse displacement of the T-nut 12.

[0036] When the T-nut 12 is pressed against the inclined web 17, the concave clamping jaw 8 is rotated and closed with the convex clamping jaw 6, which ensures stable clamping.

[0037] When the T-nut 12 moves away from the inclined web 17, the convex clamping jaw 6 and the concave clamping jaw 8 separate under the elastic restoring force of the torsion spring 13.

[0038] With regard to the specific embodiment of the locking assembly 3 and the locking latch assembly 4, a fastening clamp unit with corresponding locking and locking latch mechanisms is explained below as an example. This fastening clamp unit serves in particular as a bicycle fastening clamp, whereby the lashing assembly of the mounting bracket can in principle be designed according to this construction.

[0039] For this purpose, the present invention, as in Fig.7 to 13, a technical solution is provided: A bicycle fastening clamp comprises a fastening clamp unit 101. A ratchet strap 105 is provided at one end of the fastening clamp unit 101, and a first locking plate 104 is provided at the other end of the fastening clamp unit 101. A first insertion slot 107 is formed between the first locking plate 104 and the fastening clamp unit 101, which allows the ratchet strap 105 to pass through and be inserted. A limit block 114 is provided on the first locking plate 104, and a height-adjustable pressure frame 110 is provided in an interior space of the fastening clamp unit 101. The lower end of the pressure frame 110 presses on the upper end of the limit block 114. A locking latch 106 is provided on the fastening clamp unit 101, the other end of which projects into the interior of the fastening clamp unit 101 and is rotatably connected to a cam 109.The cam 109 presses on the pressure frame 110.

[0040] The pressure frame 110 limits the upward rotation angle of the first locking plate 104. The interaction of the locking latch 106 with the cam 109 locks the height of the pressure frame 110, thereby better securing the clamping state.

[0041] A toothed rack is provided on the first locking plate 104, the teeth of which are inclined opposite to the direction of inclination of the teeth on the ratchet strap 105. The ratchet strap 105 is guided through the first insertion slot 107 and inserted therein, whereby the ratchet strap 105 and the fastening clamp unit 101 enclose an internal space, thus clamping a bicycle. By pulling the ratchet strap 105, the internal volume decreases, thereby achieving a firm clamping.

[0042] A second locking plate 108 is provided on the fastening clamp unit 101 and is located at the lower end of the first locking plate 104. The second locking plate 108 is rotatably mounted on the fastening clamp unit 101 by means of an elastic torsion spring 117. The lower end of the fastening clamp unit 101 is provided with a pivot shaft 111, to which the second locking plate 108 is rotatably mounted by means of the elastic torsion spring 117. A positioning block 118 is provided on the fastening clamp unit 101 and is located at the lower end of the first locking plate 104. The other end of the elastic torsion spring 117 is provided with a connecting frame 113, which is plugged onto the positioning block 118.

[0043] The elastic, rotatable mounting of the second locking plate 108 is achieved by the interaction of the pivot shaft 111 with the elastic torsion spring 117. The positioning block 118 and the connecting frame 113 limit the angle of rotation of the second locking plate 108.

[0044] One end of the second detent plate 108 extends to the lower end of the first detent plate 104, while the other end of the second detent plate 108 extends to the rear side of the rack. One end portion of the second detent plate 108 is provided with a plurality of thrust teeth 112 whose inclination direction is the same as that of the rack. The thrust teeth 112 are provided in a number of at least two. A second insertion slot 116 is provided between the second detent plate 108 and the first detent plate 104.

[0045] The positioning block 118 fixes the position of the lower end of the first locking plate 104 and prevents downward rotation. After the ratchet strap 105 is clamped, the rotation of the second locking plate 108 causes the push teeth 112 to engage with the ratchet strap 105 extending to the outside of the first locking plate 104. Thus, by rotating the second locking plate 108, the push teeth 112 pull the ratchet strap 105 such that it is further stretched toward the other side of the first insertion slot 107, which allows the clamping force to be adjusted according to the adjusted tooth spacing. Optionally, a pair of symmetrically arranged clamping shells 102 can be provided on one side of the fastening clamp unit 101, which enclose a clamping interior. The clamping shells 102 adjust the inner diameter of the clamping interior via a tightening device 103.

[0046] Through the interaction of the clamping shells 102 with the tightening device 103, the fastening clamp unit 101 is mounted in a precise position.

[0047] Working principle: First, the fastening clamp unit 101 is correctly mounted on a transport rack or vehicle frame through the interaction of the clamping shells 102 and the tightening device 103. The ratchet strap 105 is guided through the first insertion slot 107 and inserted therein, whereby the ratchet strap 105 and the fastening clamp unit 101 enclose an interior space, thus achieving the task of clamping a bicycle. By pulling the ratchet strap 105, the interior volume decreases, thereby achieving a firm clamping. The pressure frame 110 and the positioning block 118 limit the position of the first locking plate 104, the end of which toothed rack remains engaged with the teeth of the ratchet strap 105. This prevents the ratchet strap 105 from moving backward.

[0048] If manual pulling of the ratchet strap 105 is not possible, the rotation of the second locking plate 108 causes the push teeth 112 to engage with the ratchet strap 105 extending to the outside of the first locking plate 104. Thus, due to the rotation of the second locking plate 108, the push teeth 112 pull the ratchet strap 105, which is thus further stretched toward the other side of the first insertion slot 107, whereby the clamping force can be adjusted according to the set tooth spacing.

[0049] For disassembly, the locking latch 106 is released, causing the cam 109 to rotate eccentrically and unlocking the upper end of the pressure frame 110. By pressing and rotating one end of the first locking plate 104 upward, its end-side toothed bar releases from the ratchet strap 105, allowing the ratchet strap 105 to be pulled backward, thus enabling bicycle disassembly.

[0050] Notwithstanding the embodiments of the present invention thus far illustrated and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations are possible without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 112172685B

[0003]

Claims

[1] A fastening bracket comprising a boom tube (5), wherein at each end of the boom tube (5) there are provided a clamping assembly which performs a clamping operation by closing a convex clamping jaw (6) and a concave clamping jaw (8) against each other, and a lashing assembly which achieves lashing and connection by means of a ratchet strap (2), characterized byin that the clamping assembly comprises the convex clamping jaw (6) and the concave clamping jaw (8), which are capable of being elastically rotated and separated relative to one another by the cooperation of a pivot shaft (7) and a torsion spring (13), wherein the convex clamping jaw (6) is fastened to an end region of the boom tube (5), wherein a lead screw (11) extends out of the convex clamping jaw (6) and is connected to the boom tube (5), wherein an upwardly inclined oblique web (17) is provided in an interior of the concave clamping jaw (8), wherein an end region of the lead screw (11) is rotatably connected to a T-nut (12) via threads, wherein the lower end of an end-side transverse flange of the T-nut (12) lies transversely directly opposite an inclined surface of the oblique web (17). [2] Mounting bracket according to claim 1, characterized byin that the lashing assembly comprises a ratchet fastening block (1), wherein one end of the boom tube (5) is provided with an inner plug (14) which is provided with a recess (19) at one end region, wherein the boom tube (5) is inserted into the ratchet fastening block (1), and wherein a projection (18) is provided on the ratchet fastening block (1), which projection engages in the recess (19) and is connected thereto. [3] Mounting bracket according to claim 2, characterized by that a sleeve rod and a locking assembly (3) are provided on the ratchet fastening block (1), wherein one end of the ratchet strap (2) is rotatably mounted on the sleeve rod, and the other end of the ratchet strap (2) can be fixed to the locking assembly (3). [4] Mounting bracket according to claim 3, characterized bythat the locking assembly (3) comprises a lever which engages with a ratchet on the ratchet strap (2) and a button for controlling the relative rotational movement of the lever, wherein a locking latch assembly (4) is provided on the ratchet mounting block (1) which controls the movement of the button. [5] Mounting bracket according to claim 1, characterized bythat the lashing assembly forms a fastening clamp unit (101), wherein the ratchet strap (105) is arranged at one end of the fastening clamp unit (101) and a first locking plate (104) is provided at the other end of the fastening clamp unit (101), wherein a first insertion slot (107) is formed between the first locking plate (104) and the fastening clamp unit (101), which allows the ratchet strap (105) to be passed through and inserted, wherein a toothed rack is provided on the first locking plate (104), the teeth of which are inclined opposite to the direction of inclination of the teeth on the ratchet strap (105);and wherein a second detent plate (108) is provided on the fastening clamp unit (101), which is located at the lower end of the first detent plate (104), wherein the second detent plate (108) is rotatably mounted on the fastening clamp unit (101) by means of an elastic torsion spring (117), wherein one end of the second detent plate (108) extends to the lower end of the first detent plate (104), while the other end of the second detent plate (108) extends to the back of the rack, and wherein an end region of the second detent plate (108) is provided with a plurality of thrust teeth (112) whose inclination direction is the same as that of the rack.; [6] Mounting bracket according to claim 5, characterized bythat a limiting block (114) is provided on the first locking plate (104) and a height-adjustable pressure frame (110) is provided in an interior space of the fastening clamp unit (101), wherein the lower end of the pressure frame (110) presses on the upper end of the limiting block (114). [7] Mounting bracket according to claim 6, characterized by that a locking latch (106) is provided on the fastening clamp unit (101), the other end of which projects into the interior of the fastening clamp unit (101) and is rotatably connected to a cam (109), the cam (109) pressing on the pressure frame (110). [8] Mounting bracket according to claim 7, characterized by that the lower end of the fastening clamp unit (101) is provided with a pivot shaft (111) on which the second locking plate (108) is rotatably mounted by means of the elastic torsion spring (117). [9] Mounting bracket according to claim 8, characterized bythat a positioning block (118) is provided on the fastening clamp unit (101), which is located at the lower end of the first locking plate (104), wherein the other end of the elastic torsion spring (117) is provided with a connecting frame (113) which is plugged onto the positioning block (118). [10] Mounting bracket according to one of claims 5 to 9, characterized by that the thrust teeth (112) are provided in a number of at least two. [11] Mounting bracket according to one of claims 5 to 10, characterized by that a second insertion slot (116) is provided between the second locking plate (108) and the first locking plate (104). [12] Mounting bracket according to one of claims 1 to 11, characterized byin that the convex clamping jaw (6) and the concave clamping jaw (8) are rotatably connected via the pivot shaft (7), wherein the torsion spring (13) is arranged at both ends of the pivot shaft (7), which torsion spring drives the convex clamping jaw (6) and the concave clamping jaw (8) to rotate relative to one another and thus to separate from one another, wherein an interior space of an end of the boom tube (5) facing the convex clamping jaw (6) is provided with a weld seat (9) to which the lead screw (11) is fixed, wherein the lead screw (11) passes through the convex clamping jaw (6) and runs into an interior space between the convex clamping jaw (6) and the concave clamping jaw (8). [13] Mounting bracket according to claim 12, characterized bythat an end region of the boom tube (5) is provided with a pipe plug (10) and an end region of the lead screw (11) is provided with a mounting plate (15) which bears against the welding seat (9), wherein the pipe plug (10) and the mounting plate (15) are fixed to the welding seat (9) by a fastening bolt (20). [14] Mounting bracket according to claim 13, characterized by that a threaded through-bore (21) penetrating the T-nut (12) is provided through which the lead screw (11) passes rotatably via threads, wherein an end region of the lead screw (11) is provided with a stop ring (16). [15] Mounting bracket according to claim 14, characterized by that the end transverse flange of the T-nut (12) is provided with a circularly rounded surface on a side directly opposite the inclined web (17).

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