阅读说明：本技术 建筑钢构折叠式施工架 (Foldable scaffold of constructional steel structure ) 是由 耿贺 王顺斌 刘超 于 2021-08-20 设计创作，主要内容包括：本发明提供建筑钢构折叠式施工架,涉及建筑钢构技术领域,以解决现有的建筑钢构折叠式施工架在使用时,踏板通常使用螺栓固定,其安装和拆卸比较麻烦,同时踏板的连接稳定性较差,而且踏板难以根据不同施工架的横杆长度进行安装使用,另外施工架受折叠效果影响,其折叠位置容易发生松动现象,导致整体的稳定性降低的问题,包括主支撑杆；所述主支撑杆为四组纵杆并呈矩形阵列方式分布,且前后两侧主支撑杆之间设有连接架,并且左右两侧主支撑杆之间设有固定杆；所述主支撑杆上设有两处踏板。本发明中挂钩能够沿滑槽滑动,根据不同横杆的长度,进行调节两处挂钩的位置,因此能够满足踏板的安装位置,从而提高踏板的实用性。(The invention provides a construction steel structure folding type construction frame, which relates to the technical field of construction steel structures and aims to solve the problems that when the existing construction steel structure folding type construction frame is used, a pedal is usually fixed by using bolts, the installation and the disassembly are troublesome, meanwhile, the connection stability of the pedal is poor, the pedal is difficult to install and use according to the lengths of cross rods of different construction frames, in addition, the construction frame is influenced by the folding effect, the folding position of the construction frame is easy to loosen, and the integral stability is reduced, and comprises a main support rod; the main support rods are four groups of longitudinal rods and are distributed in a rectangular array mode, a connecting frame is arranged between the main support rods on the front side and the rear side, and a fixing rod is arranged between the main support rods on the left side and the right side; two pedals are arranged on the main support rod. The hooks can slide along the sliding grooves, and the positions of the two hooks are adjusted according to the lengths of different cross rods, so that the mounting position of the pedal can be met, and the practicability of the pedal is improved.)

1. Foldable scaffold of architectural steel structure, its characterized in that: the construction steel structure folding scaffold comprises a main support rod;

the main support rods are four groups of longitudinal rods and are distributed in a rectangular array mode, a connecting frame is arranged between the main support rods on the front side and the rear side, and a fixing rod is arranged between the main support rods on the left side and the right side;

two pedals are arranged on the main support rod and are distributed in a symmetrical mode, and the two pedals are connected through a connecting double-lug hinge;

a fixing frame is arranged below the pedal and is connected with the pedal through two groups of supporting frames, and the two groups of supporting frames are distributed in a symmetrical mode;

the four groups of main support rods are rotatably connected with inclined support rods, and the tail ends of the inclined support rods are connected with the main support rods through connecting rods.

2. The constructional steel structure folding scaffold as claimed in claim 1, wherein the main support rods comprise cross rods, butting sleeves, butting seats and wedge blocks, the cross rods are welded between the left and right main support rods near the middle, the butting seats are arranged at the top ends of the main support rods, the wedge blocks are arranged on the butting seats, the wedge blocks are distributed in an annular array manner, the butting sleeves are arranged at the bottom ends of the main support rods, and the butting sleeves are matched with the calibers of the butting seats.

3. The folding scaffold with building steel structure as claimed in claim 1, wherein the connection frame comprises a first frame rod, a second frame rod, a fixing sleeve and a telescopic rod, the second frame rod is a cylindrical tubular structure, the telescopic rod is slidably inserted into a cavity of the second frame rod, the telescopic rod is rotatably connected with the first frame rod through a pin shaft, the fixing sleeve is sleeved on the first frame rod, and the fixing sleeve is located at the connection position of the telescopic rod and the first frame rod;

the end part of the first hack lever is provided with a first slot, the first hack lever is provided with two limiting blocks, and the two limiting blocks are symmetrically distributed;

the end part of the second frame rod is provided with a second slot, the side wall of the second frame rod is provided with limiting holes, and the limiting holes are distributed in a linear array mode;

the side wall of the fixing sleeve is provided with a through groove, and the end part of the fixing sleeve is provided with a ratchet pawl;

the telescopic link is equipped with ratchet groove on the telescopic link, and the through-hole has been seted up to the telescopic link, and through-hole and spacing hole phase-match.

4. The folding scaffold with building steel structure as claimed in claim 3, wherein the first frame rod is connected with the wedge block through the first slot, and the second frame rod is connected with the wedge block through the second slot, when the first frame rod and the second frame rod are in the locking state, the fixing sleeve is connected with the limiting block through the through slot in a sliding manner, the telescopic rod is connected with the ratchet pawl through the ratchet slot in a clamping manner, and the through hole and the limiting hole are connected with the locking bolt through locking control in a sliding manner.

5. The folding scaffold of constructional steel structure as claimed in claim 1, wherein the fixing rod comprises a third slot, the third slot is provided at both ends of the fixing rod, and the fixing rod is clamped with the wedge-shaped block through the third slot.

6. The constructional steel structure folding scaffold as claimed in claim 1, wherein the footplate comprises a fixed plate, hooks and a rotating rod, the fixed plate is arranged at both side ends of the footplate, the two hooks are arranged on the fixed plate, the rotating rod is arranged at the bottom of the footplate, and the rotating rod is connected with the supporting frame;

the fixing plate is provided with a sliding chute at one side and first positioning holes which are distributed in a linear array mode;

the hook, couple one side is equipped with the slider, and the bottom plate of couple is slided and is inserted spacing round bar, and the cover is equipped with compression spring on the spacing round bar to compression spring supports between the nut of spacing round bar tip and the bottom plate of couple.

7. The constructional steel folding scaffold as claimed in claim 6, wherein the hook is slidably connected with the sliding groove through a sliding block, when the hook is connected with the cross bar, the limiting round bar is located below the cross bar, the limiting round bar is slidably inserted into the first positioning hole, and the end of the limiting round bar is controlled by a fixing pin.

8. The folding scaffold with building steel structure as claimed in claim 1, wherein the fixing frame comprises a sliding frame, a sleeve frame, a first supporting plate, a second supporting plate and a positioning screw, the sliding frame is composed of two cylindrical rods distributed in a parallel manner, the first supporting plate is arranged between the two cylindrical rods of the sliding frame, the sleeve frame is composed of two cylindrical tubes distributed in a parallel manner, the second supporting plate is arranged between the two cylindrical tubes of the sleeve frame, and the positioning screw is arranged between the second supporting plate and the first supporting plate.

9. The foldable construction frame made of construction steel according to claim 8, wherein the column rod of the sliding frame is slidably connected to the column tube of the sleeve frame when the sliding frame is connected to the sleeve frame, and the positioning screw is slidably inserted into the center of the first support plate and the second support plate and is controlled by the locking nut.

10. The foldable scaffold made of constructional steel structure as claimed in claim 6, wherein the supporting frame comprises a bottom rod, a top rod, a sleeve, a butt rod and a second positioning hole, the sleeve is fixedly installed on one side of the top end of the bottom rod, the bottom end of the bottom rod is hinged with the sliding frame and the sleeve frame, the butt rod is installed on one end of the top rod, the other end of the top rod is rotatably connected with the rotating rod, the second positioning hole is formed in the butt rod, the second positioning hole is distributed in a linear array manner, when the bottom rod and the top rod are in a connection state, the butt rod is clamped in the sleeve, and the locking bolt locking control is slidably inserted in the second positioning hole.

Technical Field

The invention belongs to the technical field of constructional steel structures, and particularly relates to a constructional steel structure folding type scaffold.

Background

During building construction, in order to obtain a sufficient construction height, a commonly used tool is just a scaffold, and the scaffold can form a frame structure through the assembly of a plurality of scaffold cross rods and a plurality of scaffold vertical rods, so that construction personnel can place construction articles or perform standing construction conveniently.

For example, application No.: CN201410394257.X discloses a foldable scaffold of constructional steel structure, include the support body of constituteing by a set of more than support group, every support group of group all includes first support plate, second support plate and a connecting plate, a bayonet socket has all been seted up at the both ends of first support plate and second support plate, and a through-hole has all been seted up to every bayonet socket medial surface, and the connecting plate setting is in this bayonet socket, and it is just being equipped with the round pin axle to the through-hole position department to be located the connecting plate, the bottom of support body is equipped with a bottom plate, the bottom of first support plate is equipped with first recess, the up end of second support plate is equipped with the second recess, and first jack has all been seted up to the bottom both sides of each support plate, is just being equipped with the second jack on the bottom plate of first jack, sets up a bracing piece in first jack and the second jack. The invention has simple structure, can conveniently adjust the height during construction through the stepped shape, has high flexibility by selecting different sections with different heights, can be folded for transportation, occupies small space and is convenient for transportation.

When the existing folding type construction frame made of construction steel is used, the pedal is usually fixed by using bolts and is troublesome to install and disassemble, the connection stability of the pedal is poor, the pedal is easy to shake in the using process, the pedal is difficult to install and use according to the length of the cross rods of different construction frames, the practicability of the pedal is poor, the construction frames are affected by the folding effect, the folding position of the pedal is easy to loosen, and the overall stability is reduced.

Disclosure of Invention

In order to solve the technical problems, the invention provides a construction steel structure folding type construction frame, which aims to solve the problems that when the existing construction steel structure folding type construction frame is used, a pedal is usually fixed by using bolts, the installation and the disassembly are troublesome, meanwhile, the connection stability of the pedal is poor, the pedal is easy to shake in the use process, the pedal is difficult to install and use according to the lengths of cross rods of different construction frames, the practicability of the pedal is poor, in addition, the folding position of the construction frame is easy to loosen due to the influence of the folding effect, and the overall stability is reduced.

The purpose and the effect of the construction steel structure folding scaffold are achieved by the following specific technical means:

the construction steel structure folding scaffold comprises a main support rod; the main support rods are four groups of longitudinal rods and are distributed in a rectangular array mode, a connecting frame is arranged between the main support rods on the front side and the rear side, and a fixing rod is arranged between the main support rods on the left side and the right side; two pedals are arranged on the main support rod and are distributed in a symmetrical mode, and the two pedals are connected through a connecting double-lug hinge; a fixing frame is arranged below the pedal and is connected with the pedal through two groups of supporting frames, and the two groups of supporting frames are distributed in a symmetrical mode; the four groups of main support rods are rotatably connected with inclined support rods, and the tail ends of the inclined support rods are connected with the main support rods through connecting rods.

Further, the main tributary vaulting pole includes horizontal pole, butt joint cover, butt joint seat and wedge, controls and is close to the welding of middle part position between the main tributary vaulting pole and have the horizontal pole, and main tributary vaulting pole top is equipped with the butt joint seat, and is equipped with four wedges on the butt joint seat to four wedges are the annular array mode and distribute, and the main tributary vaulting pole bottom is equipped with butt joint cover, and butt joint cover and butt joint seat bore phase-match.

Furthermore, the connecting frame comprises a first frame rod, a second frame rod, a fixing sleeve and a telescopic rod, the second frame rod is of a cylindrical tubular structure, the telescopic rod is slidably inserted into a cavity of the second frame rod and is rotatably connected with the first frame rod through a pin shaft, the fixing sleeve is sleeved on the first frame rod, and the fixing sleeve is positioned at the joint of the telescopic rod and the first frame rod;

the end part of the first hack lever is provided with a first slot, the first hack lever is provided with two limiting blocks, and the two limiting blocks are symmetrically distributed;

the end part of the second frame rod is provided with a second slot, the side wall of the second frame rod is provided with limiting holes, and the limiting holes are distributed in a linear array mode;

the side wall of the fixing sleeve is provided with a through groove, and the end part of the fixing sleeve is provided with a ratchet pawl;

the telescopic link is equipped with ratchet groove on the telescopic link, and the through-hole has been seted up to the telescopic link, and through-hole and spacing hole phase-match.

Furthermore, first hack lever is through first slot and wedge looks joint, and the second hack lever passes through second slot and wedge looks joint, and when first hack lever was locking state with the second hack lever, fixed cover was through leading to groove and stopper sliding connection, and the telescopic link passes through ratchet groove and ratchet claw looks joint to the through-hole has locking bolt locking control with spacing downthehole sliding insertion.

Furthermore, the fixing rod comprises a third slot, the third slot is arranged at two ends of the fixing rod, and the fixing rod is clamped with the wedge block through the third slot.

Further, the pedal comprises a fixed plate, hooks and a rotating rod, the fixed plate is arranged at the end parts of two sides of the two pedals, the two hooks are arranged on the fixed plate, the rotating rod is arranged at the bottom of the pedal, and the rotating rod is connected with the support frame;

the fixing plate is provided with a sliding chute at one side and first positioning holes which are distributed in a linear array mode;

the hook, couple one side is equipped with the slider, and the bottom plate of couple is slided and is inserted spacing round bar, and the cover is equipped with compression spring on the spacing round bar to compression spring supports between the nut of spacing round bar tip and the bottom plate of couple.

Further, the hook is connected with the sliding groove in a sliding mode through the sliding block, when the hook is connected with the cross rod, the limiting round rod is located below the cross rod and is slidably inserted into the first positioning hole, and the end portion of the limiting round rod is controlled through the fixing pin.

Further, the mount includes carriage, cover frame, first backup pad, second backup pad and positioning screw, and the carriage comprises the cylindricality pole that two parallel mode distribute, and is equipped with first backup pad between the cylindricality pole of two of carriage, and the cover frame comprises for the cylindricality pipe that two parallel mode distribute, and is equipped with the second backup pad between the two cylindricality pipes of cover frame to be equipped with positioning screw between second backup pad and the first backup pad.

Furthermore, when the sliding frame is connected with the sleeve frame, the cylindrical rod of the sliding frame is connected with the cylindrical pipe of the sleeve frame in a sliding mode, the positioning screw rod is inserted into the center positions of the first supporting plate and the second supporting plate in a sliding mode, and the positioning screw rod is controlled through the locking nut.

Further, the support frame includes sill bar, ejector pin, cutting ferrule, butt joint pole and second locating hole, and sill bar top one side fixed mounting has the cutting ferrule, and sill bar bottom and carriage and stock hinged joint, and ejector pin one end is equipped with the butt joint pole, and the ejector pin other end rotates with the dwang to be connected, has seted up the second locating hole on the butt joint pole, and the second locating hole is the distribution of line type array mode, and when sill bar and ejector pin were connected state, the butt joint pole joint was in the cutting ferrule, and the second locating hole internal slipping has inserted locking bolt locking control.

Compared with the prior art, the invention has the following beneficial effects:

1. the first hack lever is clamped with the wedge block through the first slot, the second hack lever is clamped with the wedge block through the second slot, when the first hack lever and the second hack lever are in a locking state, the fixed sleeve is connected with the limiting block in a sliding mode through the through groove, the telescopic rod is clamped with the ratchet claw through the ratchet groove, and the through hole and the limiting hole are internally inserted with locking bolt locking control in a sliding mode, so that the first hack lever and the second hack lever cannot float upwards, the stability of the connecting frame for supporting the two groups of supporting rods is improved, and the phenomenon that the connecting frame is folded and loosened is effectively avoided;

2. the hook is connected with the sliding groove in a sliding mode through the sliding block, when the hook is connected with the cross rod, the limiting round rod is located below the cross rod and is inserted into the first positioning hole in a sliding mode, and the end portion of the limiting round rod is controlled through the fixing pin, so that the pedal and the cross rod are simple in connection structure, convenient to install and disassemble, capable of sliding along the sliding groove, and capable of adjusting the positions of the two hooks according to the lengths of different cross rods, the installation position of the pedal can be met, and the practicability of the pedal is improved;

3. because the carriage is when the connected state with the cover frame, the cylindricality pole of carriage and the cylindricality pipe sliding connection of cover frame, and positioning screw rod cunning insert in the central point of first backup pad and second backup pad puts to control through lock nut on the positioning screw rod, thereby make carriage and cover frame can obtain effectively fixed fast, and the mount supports in the support frame bottom simultaneously, can strengthen the stability of top footboard, effectively avoids the footboard to take place to rock.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic axial view of the present invention.

FIG. 2 is a schematic view of the connection structure of a part of the main support rods with the pedals, the fixing frame and the support frame.

Fig. 3 is a schematic view of the structure of the connection frame of the present invention.

Fig. 4 is a structural schematic diagram of a part of the connecting frame in an explosion state.

FIG. 5 is a schematic view showing a structure of the main support pole, the connecting frame and the fixing pole of the present invention in a state of being separated partially.

Fig. 6 is a structural diagram of the fixing frame of the invention in an explosion state.

Fig. 7 is a structural schematic diagram of the support frame of the present invention in an exploded state.

FIG. 8 is a schematic view of the two step-separated configuration of the present invention.

Fig. 9 is an enlarged view of the portion a of fig. 8 according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a main support bar; 101. a cross bar; 102. butting sleeves; 103. a docking station; 104. a wedge block; 2. a connecting frame; 201. a first frame bar; 2011. a first slot; 2012. a limiting block; 202. a second frame bar; 2021. a second slot; 2022. a limiting hole; 203. fixing a sleeve; 2031. a through groove; 2032. a ratchet pawl; 204. a telescopic rod; 2041. a ratchet groove; 2042. a through hole; 3. fixing the rod; 301. a third slot; 4. a pedal; 401. a fixing plate; 4011. a chute; 4012. a first positioning hole; 402. hooking; 4021. a slider; 4022. a limiting round rod; 4023. a compression spring; 403. rotating the rod; 5. a fixed mount; 501. a carriage; 502. sleeving a frame; 503. a first support plate; 504. a second support plate; 505. positioning a screw rod; 6. a support frame; 601. a bottom bar; 602. a top rod; 603. a card sleeve; 604. a docking rod; 605. a second positioning hole; 7. a diagonal brace; 8. a connecting rod.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 9:

the invention provides a construction steel structure folding type construction frame, which comprises a main support rod 1; the main support rod 1 comprises a cross rod 101, butt-joint sleeves 102, butt-joint seats 103 and wedge blocks 104, the cross rod 101 is welded between the left main support rod 1 and the right main support rod 1 near the middle, the butt-joint seats 103 are arranged at the top ends of the main support rods 1, the four wedge blocks 104 are arranged on the butt-joint seats 103, the four wedge blocks 104 are distributed in an annular array mode, the butt-joint sleeves 102 are arranged at the bottom ends of the main support rods 1, the calibers of the butt-joint sleeves 102 are matched with the calibers of the butt-joint seats 103, and the butt-joint sleeves 102 are clamped with the butt-joint seats 103; the main support rods 1 are four groups of longitudinal rods and are distributed in a rectangular array mode, a connecting frame 2 is arranged between the main support rods 1 on the front side and the rear side, and a fixing rod 3 is arranged between the main support rods 1 on the left side and the right side; the fixing rod 3 comprises a third slot 301, the third slot 301 is arranged at two ends of the fixing rod 3, and the fixing rod 3 is clamped with the wedge block 104 through the third slot 301; two pedals 4 are arranged on the main support rod 1, the two pedals 4 are distributed in a symmetrical mode, and the two pedals 4 are connected through connecting double-lug hinges; a fixed frame 5 is arranged below the pedal 4, the fixed frame 5 is connected with the pedal 4 through two groups of supporting frames 6, and the two groups of supporting frames 6 are distributed in a symmetrical mode; the support frame 6 comprises a bottom rod 601, a top rod 602, a clamping sleeve 603, a butt joint rod 604 and a second positioning hole 605, wherein the clamping sleeve 603 is fixedly installed on one side of the top end of the bottom rod 601, the bottom end of the bottom rod 601 is hinged with the sliding frame 501 and the clamping frame 502, the butt joint rod 604 is arranged at one end of the top rod 602, the other end of the top rod 602 is rotatably connected with the rotating rod 403, the butt joint rod 604 is provided with the second positioning hole 605, the second positioning holes 605 are distributed in a linear array mode, when the bottom rod 601 and the top rod 602 are in a connection state, the butt joint rod 604 is clamped in the clamping sleeve 603, and a locking bolt is slidably inserted into the second positioning hole 605 for locking control; the four groups of main supporting rods 1 are rotatably connected with inclined supporting rods 7, and the tail ends of the inclined supporting rods 7 are connected with the main supporting rods 1 through connecting rods 8.

As shown in fig. 3 and 4, the connecting frame 2 includes a first frame rod 201, a second frame rod 202, a fixing sleeve 203 and a telescopic rod 204, the second frame rod 202 is a cylindrical tubular structure, the telescopic rod 204 is slidably inserted into a cavity of the second frame rod 202, the telescopic rod 204 is rotatably connected with the first frame rod 201 through a pin shaft, the fixing sleeve 203 is sleeved on the first frame rod 201, and the fixing sleeve 203 is located at a connection position of the telescopic rod 204 and the first frame rod 201;

the end of the first hack lever 201 is provided with a first slot 2011, the first hack lever 201 is provided with two limiting blocks 2012, and the two limiting blocks 2012 are distributed symmetrically;

a second slot 2021 is formed at the end of the second frame bar 202, a limiting hole 2022 is formed in the side wall of the second frame bar 202, and the limiting holes 2022 are distributed in a linear array manner;

a through groove 2031 is formed in the side wall of the fixed sleeve 203, and a ratchet claw 2032 is arranged at the end part of the fixed sleeve 203;

the telescopic rod 204 is provided with a ratchet groove 2041, the telescopic rod 204 is provided with a through hole 2042, and the through hole 2042 is matched with the limiting hole 2022;

the first frame bar 201 is clamped with the wedge-shaped block 104 through the first slot 2011, the second frame bar 202 is clamped with the wedge-shaped block 104 through the second slot 2021, when the first frame bar 201 and the second frame bar 202 are in a locking state, the fixing sleeve 203 is connected with the limiting block 2012 in a sliding mode through the through groove 2031, the telescopic rod 204 is clamped with the ratchet claw 2032 through the ratchet groove 2041, and the locking bolt locking control is inserted into the through hole 2042 and the limiting hole 2022 in a sliding mode, so that the first frame bar 201 and the second frame bar 202 cannot float upwards.

As shown in fig. 8 and 9, the pedal 4 includes a fixing plate 401, hooks 402 and rotating rods 403, the fixing plate 401 is disposed at both side ends of the two pedals 4, the two hooks 402 are disposed on the fixing plate 401, the rotating rods 403 are disposed at the bottom of the pedal 4, and the rotating rods 403 are connected to the supporting frame 6;

a sliding groove 4011 is formed in one side of the fixing plate 401, first positioning holes 4012 are formed in the fixing plate 401, and the first positioning holes 4012 are distributed in a linear array mode;

a slider 4021 is arranged on one side of the hook 402, a limit round rod 4022 is slidably inserted into a bottom plate of the hook 402, a compression spring 4023 is sleeved on the limit round rod 4022, and the compression spring 4023 is supported between a nut at the end of the limit round rod 4022 and the bottom plate of the hook 402;

wherein, couple 402 passes through slider 4021 and spout 4011 sliding connection, when couple 402 is connected state with horizontal pole 101, spacing round bar 4022 is located horizontal pole 101 below, and spacing round bar 4022 cunning is inserted in first locating hole 4012, and spacing round bar 4022 tip passes through the fixed pin control, it is thus visible, footboard 4 is simple with horizontal pole 101 connection structure, its installation and dismantlement are convenient, couple 402 can slide along spout 4011 simultaneously, according to the length of different horizontal poles 101, adjust the position of two couples 402.

As shown in fig. 6, the fixing frame 5 includes a sliding frame 501, a sleeve frame 502, a first supporting plate 503, a second supporting plate 504 and a positioning screw 505, the sliding frame 501 is composed of two cylindrical rods distributed in parallel, the first supporting plate 503 is arranged between the two cylindrical rods of the sliding frame 501, the sleeve frame 502 is composed of two cylindrical tubes distributed in parallel, the second supporting plate 504 is arranged between the two cylindrical tubes of the sleeve frame 502, and the positioning screw 505 is arranged between the second supporting plate 504 and the first supporting plate 503;

when the sliding frame 501 and the sleeve frame 502 are connected, a cylindrical rod of the sliding frame 501 is slidably connected with a cylindrical pipe of the sleeve frame 502, the positioning screw 505 is slidably inserted into the center positions of the first supporting plate 503 and the second supporting plate 504, and the positioning screw 505 is controlled by a locking nut, so that the sliding frame 501 and the sleeve frame 502 can be quickly and effectively fixed.

In another embodiment, the positioning screw 505 is sleeved with a supporting spring, and the supporting spring is supported between the second supporting plate 504 and the first supporting plate 503, so that the sliding frame 501 and the sleeve frame 502 can slide more stably by the elastic action of the supporting spring, thereby improving the supporting stability of the fixing frame 5.

The specific use mode and function of the embodiment are as follows:

in the using process, firstly, the first frame rod 201 is clamped with the wedge-shaped block 104 through the first slot 2011, the second frame rod 202 is clamped with the wedge-shaped block 104 through the second slot 2021, when the first frame rod 201 and the second frame rod 202 are in a locking state, the fixing sleeve 203 is in sliding connection with the limiting block 2012 through the through slot 2031, the telescopic rod 204 is clamped with the ratchet claw 2032 through the ratchet slot 2041, and the through hole 2042 and the limiting hole 2022 are in sliding insertion with locking bolt locking control, so that the first frame rod 201 and the second frame rod 202 cannot float upwards;

secondly, the hook 402 is in sliding connection with the sliding groove 4011 through the sliding block 4021, when the hook 402 is connected with the cross bar 101, the limiting round rod 4022 is positioned below the cross bar 101, the limiting round rod 4022 is inserted in the first positioning hole 4012 in a sliding manner, and the end part of the limiting round rod 4022 is controlled through a fixing pin, so that the pedal 4 is simple in connection structure with the cross bar 101 and convenient to mount and dismount, meanwhile, the hook 402 can slide along the sliding groove 4011, and the positions of the two hooks 402 can be adjusted according to the lengths of different cross bars 101;

in addition, when the sliding frame 501 is connected with the sleeve frame 502, the cylindrical rod of the sliding frame 501 is slidably connected with the cylindrical pipe of the sleeve frame 502, the positioning screw 505 is slidably inserted in the center positions of the first supporting plate 503 and the second supporting plate 504, and the positioning screw 505 is controlled by the locking nut, so that the sliding frame 501 and the sleeve frame 502 can be quickly and effectively fixed.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.