Flat car with rotatable pull rod

Abstract

The utility model belongs to the technical field of carrying equipment, and particularly relates to a flat car with a rotatable pull rod, which comprises a bottom plate, a pull rod, a pull rod and a pull rod, the rear side plate is hinged to the rear end of the bottom plate, the rear side plate can be fixed to the bottom plate through a rotation limiting structure, and a containing groove is formed in the rear side face of the rear side plate; the pull rod is hinged to the rear end part of the bottom plate, and the pull rod is movably clamped in the accommodating groove; when the flat car is pulled to move backwards, the pull rod is separated from the accommodating groove, so that the pull rod rotates on the bottom plate, and the flat car is pulled; when the flat car is pushed to move forwards, the pull rod is arranged in the containing groove, so that the pull rod abuts against the rear side plate, and the flat car is pushed. The pull rod can rotate on the bottom plate, so that a user can pull the flat car conveniently, and the use comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transport equipment, in particular to a flatbed vehicle with a rotatable pull rod. Background Art

[0002] Flatbed trucks refer to various mechanical devices, appliances, and tools used to move items between different locations.

[0003] For example, Chinese patent CN214710999U discloses a trolley, which includes a telescopic pull rod, a load-bearing plate and a caster component. The protrusion on the load-bearing plate is formed with two accommodating cavities with openings upward, and the bottoms of the two pull rods are respectively accommodated in the two accommodating cavities on the protrusion, and the shape of the accommodating cavities is adapted to the shape of the pull rods.

[0004] However, there are still some shortcomings. The bottom of the pull rod is inserted into the accommodating cavity, so that the angle between the pull rod and the load-bearing plate cannot be adjusted; when the pull rod trolley is pulled to move backward, since the angle of the pull rod cannot be rotated, the pull rod trolley cannot adapt to the height and arm length of different users, which reduces the comfort of use and increases the effort of pulling, making the operation inconvenient; when the pull rod trolley is pushed forward, the lower end of the pull rod directly abuts against the edge of the accommodating cavity. Since the goods on the load-bearing plate are too heavy and the bearing capacity of the telescopic pull rod is limited, it is easy to cause the place where the pull rod abuts against the opening edge of the accommodating cavity to be subjected to greater pressure, resulting in a depression of the side wall of the pull rod, thereby causing the pull rod to bend and deform, affecting the use. Summary of the invention

[0005] The purpose of the utility model is to provide a flatbed cart with a rotatable pull rod, by hingedly connecting the bottom of the pull rod to the rear end of the bottom plate, and fixing the rear side plate to the bottom plate by a rotation limiting structure. When the pull rod is pulled, the pull rod can be disengaged from the accommodating groove of the rear side plate, thereby enabling adjustment of the angle between the pull rod and the bottom plate, thereby improving the problem of uncomfortable use caused by the fixed angle between the pull rod and the bottom plate.

[0006] The purpose of the utility model is achieved in this way:

[0007] A flatbed vehicle with a rotatable pull rod, comprising:

[0008] A bottom plate, a roller is provided at the lower end thereof;

[0009] A rear side plate, which is hinged to the rear end of the bottom plate, and the rear side plate can be fixed to the bottom plate through a rotation-limiting structure, and a receiving groove is provided on the rear side surface of the rear side plate;

[0010] A pull rod, which is hinged at the rear end of the bottom plate and is movably engaged in the receiving groove;

[0011] When the flatbed trolley is pulled to move backward, the pull rod is disengaged from the receiving groove, so that the pull rod rotates on the bottom plate to pull the flatbed trolley;

[0012] When the flatbed cart is pushed to move forward, the pull rod is placed in the accommodating groove so that the pull rod abuts against the rear side plate, thereby pushing the flatbed cart.

[0013] Preferably, at least one limiting member is provided on the inner side wall of the accommodating groove;

[0014] When the pull rod is placed in the receiving groove, the limiting member abuts against the pull rod to limit the pull rod from leaving the receiving groove.

[0015] Preferably, the rotation limiting structure comprises:

[0016] A slot is arranged on the bottom plate, a hinge seat is protruded from the rear end of the bottom plate, and a strip hole is opened on the side wall of the hinge seat;

[0017] A plug-in portion is arranged at the lower end of the rear side plate, the plug-in portion is provided with an opening, and the opening extends into the rear side plate to form an avoidance cavity;

[0018] The plug-in portion is provided with an articulated shaft, the articulated shaft portion is located at the opening, and the articulated shaft located in the opening is inserted into the strip-shaped hole;

[0019] When the hinge shaft is placed at the upper end of the strip hole, the plug-in portion is disengaged from the slot, thereby realizing the rotation of the rear side plate;

[0020] When the hinge shaft is placed at the lower end of the strip hole, the plug-in portion is inserted into the slot to limit the rotation of the rear side plate.

[0021] Preferably, a hinge hole is provided on the hinge seat, the hinge hole is used to hinge the pull rod, and the side wall of the avoidance cavity is connected to the side wall of the accommodating groove;

[0022] When the rear side plate rotates on the bottom plate, the pull rod can rotate along with the rear side plate.

[0023] Preferably, the upper end surface of the bottom plate is recessed downward to form a card slot, the front side of the card slot is connected to the rear side of the slot, and a locking piece is slidably provided in the card slot;

[0024] A limiting groove is provided at the side end of the plug-in portion;

[0025] When the plug-in portion is inserted into the slot, the end of the locking member extends into the slot and is inserted into the limiting groove, thereby limiting the plug-in portion from being separated from the slot.

[0026] Preferably, the left and right sides of the card slot are provided with anti-slip grooves, the anti-slip grooves are provided with limiting protrusions, and the two sides of the locking member are provided with anti-slip protrusions;

[0027] When the locking member is placed in the slot, the anti-slip protrusion is placed in the anti-slip groove, and the movement of the locking member in the slot is limited by the limiting protrusion.

[0028] Preferably, it also includes a rope storage device, which is arranged on the rear side plate, and the rope can extend from the rear side plate;

[0029] The rope storage device comprises:

[0030] A rope drum mechanism is rotatably connected in the rear side plate, and the rope drum mechanism is provided with a rope receiving cavity for winding the rope;

[0031] A toothed disc, which is mounted at the front end of the rope disc mechanism and rotates along with the rope disc mechanism;

[0032] A locking mechanism is installed on the rear side plate, and the locking mechanism cooperates with the toothed disc to drive or limit the rope disc mechanism to rotate.

[0033] Preferably, the locking mechanism comprises:

[0034] A locking plate, which is mounted on the rear side plate, and a plurality of tooth grooves are arranged on the inner wall of the locking plate;

[0035] A locking member, whose end surface is provided with a rotating shaft and a locking tooth, the rear end of the rotating shaft passes through the rope disc mechanism and is inserted into the connecting sleeve of the rear side plate, and the locking tooth is movably engaged with the toothed disc;

[0036] A locking portion is disposed at the side end of the locking member, and a locking tooth is formed at the end of the locking portion. The locking tooth is movably engaged in the tooth groove to limit the rotation of the locking member on the locking disk.

[0037] Preferably, the locking mechanism further comprises:

[0038] A rotating cover, which is mounted on the locking member and is used to drive the locking member to rotate;

[0039] A limiting portion and an anti-slip portion are provided on the inner side wall of the rotating cover, and an annular groove is provided on the outer side wall of the locking disk, and the limiting portion or the anti-slip portion movably abuts against the side wall of the annular groove;

[0040] The rotating cover is provided with a clamping portion, the clamping portion is provided with a clamping groove, the locking member is provided with a clamping strip, and the clamping strip is movably placed in the clamping groove.

[0041] Preferably, the rope reel mechanism comprises:

[0042] A rope drum base, wherein a shaft sleeve is provided in the middle thereof, and the shaft sleeve is sleeved on the connecting sleeve of the rear side plate;

[0043] A rope drum partition, which is sleeved on the shaft sleeve;

[0044] The toothed disc is installed at the front end of the shaft sleeve, and the rope disc partition is located between the rope disc base and the toothed disc, dividing the rope collecting cavity into cavity one and cavity two;

[0045] The front ends of the rope drum base and the rope drum partition are both provided with a positioning ring 1, and a positioning protrusion is provided inside the positioning ring 1;

[0046] The rear ends of the rope disc partition and the toothed disc are both provided with a second positioning ring, and the edge of the second positioning ring is sunken toward the center to form a positioning groove;

[0047] When the rope reel base is connected to the rope reel partition, the first positioning ring at the front end of the rope reel base abuts against the rear end of the rope reel partition, and the second positioning ring at the rear end of the rope reel partition abuts against the inner wall of the first positioning ring of the rope reel base, and the positioning protrusion of the rope reel base is clamped in the positioning groove of the rope reel partition, so as to realize the synchronous rotation of the rope reel base and the rope reel partition;

[0048] When the rope drum partition is connected to the toothed disk, the positioning ring 1 at the front end of the rope drum partition abuts against the rear end of the toothed disk, and the positioning ring 2 at the rear end of the toothed disk abuts against the inner wall of the positioning ring 1 of the rope drum partition, and the positioning protrusion of the rope drum partition is clamped in the positioning groove of the toothed disk, thereby realizing the synchronous rotation of the rope drum partition and the toothed disk.

[0049] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0050] The pull rod designed by the utility model can be separated from the receiving groove of the rear side plate to adjust the angle between the pull rod and the bottom plate, so that the pull rod can be rotated on the bottom plate according to the needs of the user, thereby facilitating the user to pull the flatbed cart and improving the comfort of use; at the same time, when the flatbed cart is pushed, the pull rod is placed in the receiving groove, and the flatbed cart is pushed by abutting the rear side plate with the side end of the pull rod, thereby avoiding deformation of the pull rod due to the small force area between the pull rod and the bottom plate, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the structure of the utility model when the rear side panels are in an upright state.

[0052] Figure 2 It is a structural schematic diagram of the utility model when the pull rod and the accommodating groove are separated.

[0053] Figure 3 It is a schematic diagram of the structure of the utility model when the rear side panels and the pull rod are in a folded state.

[0054] Figure 4 This is one of the partial explosion diagrams of the utility model.

[0055] Figure 5 This is the second partial explosion diagram of the utility model.

[0056] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0057] Figure 7 This is a cross-sectional view of the locking member of the utility model installed on the base plate.

[0058] Figure 8 It is a cross-sectional view of the rope storage device of the utility model.

[0059] Fig. 9 It is an exploded view of the rear side plate and the rope storage device of the utility model.

[0060] Fig.10 It is an exploded view of the rope storage device of the utility model.

[0061] Reference numerals: 1, bottom plate; 11, roller; 12, slot; 13, hinge seat; 131, strip hole; 132, hinge hole; 14, card slot; 15, anti-slip groove; 151, limit protrusion;

[0062] 2. rear side plate; 21. receiving groove; 211. limiting member; 22. plug-in portion; 220. hinge shaft; 221. limiting groove; 23. opening; 24. avoidance cavity; 25. connecting sleeve;

[0063] 3. Pull rod;

[0064] 4. Locking piece; 41. Anti-drop protrusion;

[0065] 5. Rope storage device; 51. Rope reel mechanism; 52. Toothed disc; 53. Locking mechanism; 54. Rope reel base; 541. Bushing; 55. Rope reel partition; 56. Rope receiving chamber;

[0066] 6. Locking plate; 61. Tooth groove; 62. Ring groove;

[0067] 7. Locking member; 71. Rotating shaft; 72. Locking tooth; 73. Locking portion; 731. Snap-on tooth; 74. Snap-on strip;

[0068] 8. Rotating cover; 81. Position limiting portion; 82. Anti-slip portion; 83. Clamping portion; 84. Clamping groove;

[0069] 91. Positioning ring 1; 92. Positioning protrusion; 93. Positioning ring 2; 94. Positioning groove. DETAILED DESCRIPTION

[0070] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0071] like Figure 1 As shown, a flatbed vehicle with a rotatable pull rod comprises: a bottom plate 1, a rear side plate 2, a pull rod 3 and a rope storage device 5;

[0072] Combination Figures 1 to 3 The bottom plate 1 is provided with a roller 11 at the lower end thereof; the rear side plate 2 is hinged to the rear end of the bottom plate 1, and the rear side plate 2 can be fixed to the bottom plate 1 through a rotation-limiting structure (that is, the rear side plate 2 can stand on the rear end of the bottom plate without rotating on the rear end of the bottom plate, specifically in combination with Figure 1 and Figure 2 ), a receiving groove 21 is provided on the rear side surface of the rear side plate 2, and the opening of the receiving groove 21 faces the outside of the flatbed vehicle; the pull rod 3 is hinged at the rear end of the bottom plate 1, and the pull rod 3 is movably engaged in the receiving groove 21;

[0073] When the rear side plate 2 is erected on the rear end of the bottom plate 1 (i.e., the rear side plate 2 is in an erected state, as shown in FIG. Figure 1 and Figure 2 ),like Figure 2 As shown, the pull rod 3 is disengaged from the receiving groove 21, so that the angle of the pull rod 3 on the base plate 1 is rotated. The user pulls the pull rod 3 to drive the base plate 1 to move, and the flatbed truck moves backward. The angle of the pull rod 3 on the base plate 1 can be adjusted according to the needs of the user, thereby improving the comfort when pulling the flatbed truck, and at the same time making it convenient for the user to pull the flatbed truck, saving the user's physical energy and improving the handling efficiency of the flatbed truck.

[0074] When the rear side plate 2 is erected on the rear end of the bottom plate 1, Figure 1 As shown, the pull rod 3 is placed in the accommodating groove 21. The user pushes the pull rod 3 so that the pull rod 3 abuts against the rear side plate 2. The rear side plate 2 drives the bottom plate 1 to move through the rotation limiting structure, thereby realizing the forward movement of the flatbed truck. The existence of the rear side plate 2 improves the connection strength between the pull rod 3 and the bottom plate 1, avoids the problem that the connection between the pull rod 3 and the bottom plate 1 is subjected to excessive force, resulting in deformation or breakage of the pull rod 3, and improves the service life of the pull rod 3.

[0075] The pull rod 3 is a telescopic pull rod, which has two vertical rods and a handle connecting the vertical rods. The two vertical rods are respectively placed in two receiving grooves 21 set on the rear side plate 2. The receiving grooves are used to fix the vertical rods to prevent the pull rod 3 from shaking on the rear side plate 2, thereby ensuring the stable connection between the pull rod 3 and the base plate 1.

[0076] Combination Figures 1 to 4 A limiting member 211 is provided on the inner side wall of the receiving groove 21, and the end of the limiting member 211 has an anti-dropping convex strip; when the pull rod 3 is placed in the receiving groove 21, the limiting member 211 abuts against the side end of the pull rod 3, and the anti-dropping convex strip abuts against the pull rod 3, which is used to limit the pull rod 3 from being separated from the receiving groove 21, thereby ensuring that the pull rod 3 is stored in the flatbed car (such as Figure 3 ) or when the rear side plate 2 is erected (such as Figure 2 ) will not rotate on the bottom plate 1, so that when the pull rod 3 does not need to rotate, the positions of the pull rod 3 and the rear side plate 2 can be stable, which is convenient for storage and transportation.

[0077] When there is one limiting member 211, it is directly arranged on one side of the accommodating groove 21, and the pull rod 3 is abutted against the other side of the accommodating groove 21 through the limiting member 211, thereby limiting the pull rod 3 in the accommodating groove 21; when there are more than one limiting member 211, the limiting members 211 are respectively placed on both sides of the accommodating groove 21, and the pull rod 3 is clamped between the limiting members 211. In this solution, two limiting members 211 are arranged in each accommodating groove 21, which saves production costs while ensuring that the pull rod 3 is limited in the accommodating groove 21.

[0078] Combination Figures 1 to 4 The rotation limiting structure includes: a slot 12 arranged on the bottom plate 1 and a plug-in portion 22 arranged at the lower end of the rear side plate 2 (the plug-in portion 22 refers to a portion that can be fully inserted into the slot 12); a hinge seat 13 protrudes from the rear end of the bottom plate 1, and in this scheme, the hinge seat 13 is arranged in the slot 12, and the upper end of the hinge seat 13 protrudes from the slot 12, and a strip hole 131 is opened on the side wall of the hinge seat 13, the upper end portion of the strip hole 131 is located outside the slot 12, and the lower end portion of the strip hole 131 is placed in the slot 12; the plug-in portion 22 is opened with an opening 23, and the opening 23 extends to the rear side plate 2 to form an avoidance cavity 24; a hinge shaft 220 is arranged on the plug-in portion 22, the middle part of the hinge shaft 220 is located at the opening 23, the two ends of the hinge shaft 220 are connected to the two side walls of the opening 23, and the hinge shaft 220 located in the opening 23 is penetrated in the strip hole 131;

[0079] When the hinge shaft 220 is slidably placed on the upper end of the strip hole 131, the plug-in portion 22 is freed from the constraint of the slot 12, and the rear side panel 2 can be rotated at the upper end of the hinge seat 13, so that the rear side panel 2 can be rotated in a direction close to the upper surface of the bottom panel 1, thereby realizing the folding between the rear side panel 2 and the bottom panel 1 (such as Figure 3 ), convenient for transportation and storage on flatbed trucks;

[0080] When the hinge shaft 220 is slidably placed at the lower end of the strip hole 131, the plug-in portion 22 is inserted into the slot 12, and the rear side plate 2 is constrained by the slot 12 and is difficult to rotate on the hinge seat 13, so that the rear side plate 2 can remain in a state of standing on the bottom plate 1 (such as Figure 1 or Figure 2 ), so that when the pull rod 3 is pushed, the rear side plate 2 can increase the force-bearing area between the pull rod 3 and the bottom plate 1, thereby preventing the pull rod 3 from being deformed or broken.

[0081] In this solution, the plug-in portion 22 is integrally formed at the lower end of the rear side panel 2, so that the connection strength between the plug-in portion 22 and the rear side panel 2 is better, and when the pull rod 3 pushes the rear side panel 2, the connection between the rear side panel 2 and the bottom plate 1 is prevented from breaking, thereby preventing the plug-in portion 22 and the rear side panel 2 from breaking. In actual production, in order to facilitate production and manufacturing and to make it more convenient to install the rear side panel 2 on the bottom plate 1, the plug-in portion 22 and the rear side panel 2 can be manufactured separately, and the plug-in portion 22 is connected to the lower end of the rear side panel 2 by means of snap connections or screw connections.

[0082] Combination Figure 2 and Figure 3 A hinge hole 132 is provided on the hinge seat 13, and the hinge hole 132 is used to hinge the pull rod 3, so that the side wall of the avoidance cavity 24 is connected with the side wall of the accommodating groove 21; when the rear side plate 2 rotates on the base plate 1, the pull rod 3 can rotate with the rear side plate 2, ensuring that the pull rod 3 can always be clamped in the accommodating groove 21, avoiding the pull rod 3 from rotating arbitrarily on the base plate 1.

[0083] Combination Figures 4 to 7 The upper end surface of the bottom plate 1 is recessed with a card slot 14, the front side of the card slot 14 is connected to the rear side of the slot 12, and a locking piece 4 is slidably arranged in the card slot 14; a limiting groove 221 is provided at the side end of the plug-in portion 22; when the plug-in portion 22 is inserted into the slot 12, the end of the locking piece 4 extends into the slot 12 and is inserted into the limiting groove 221, so as to limit the plug-in portion 22 from being separated from the slot 12, thereby preventing the rear side plate 2 from accidentally being separated from the restriction of the slot 12 and rotating, thereby affecting the forward movement of the flatbed truck.

[0084] Combination Figures 4 to 7, anti-slip grooves 15 are provided on the left and right sides of the card slot 14, and limiting protrusions 151 are provided in the anti-slip grooves 15, and anti-slip protrusions 41 are provided on both sides of the locking piece 4; when the locking piece 4 is placed in the card slot 14, the anti-slip protrusions 41 are placed in the anti-slip grooves 15, so that the locking piece 4 can slide in the card slot 14 and will not be separated from the card slot 14, and the limiting protrusions 151 abut against the anti-slip protrusions 41 to limit the movement of the locking piece 4 in the card slot 14, so that the state when the end of the locking piece 4 is extended into the slot 12 can be maintained, and the end of the locking piece 4 is prevented from being separated from the limiting groove 221 due to external factors such as bumps, thereby ensuring that the locking piece 4 can limit the plug-in portion 22 in the slot 12.

[0085] Combination Figure 1 , Figure 4 and Fig. 9 The rope storage device 5 is arranged on the rear side plate 2, and the rope can extend from the rear side plate 2, so that the items can be tied to the bottom plate 1 to prevent the items from falling off the bottom plate 1; the rear side plate 2 has a shell 1 and a shell 2, and the shell 1 and the shell 2 are connected by screws or buckles. The end of the shell 1 is provided with a receiving groove 21 and an opening, and the diameter of the opening is smaller than the diameter of the toothed disc 52, and the shell 2 is provided with a connecting sleeve 25;

[0086] Combination Figures 8 to 10 The rope storage device 5 includes: a rope drum mechanism 51, which is rotatably connected to the rear side plate 2, and the rope drum mechanism 51 is provided with a rope receiving cavity 56 for winding the rope; a toothed disc 52, which is installed at the front end of the rope drum mechanism 51 and rotates with the rope drum mechanism 51; a locking mechanism 53, which is installed on the rear side plate 2, and the locking mechanism 53 cooperates with the toothed disc 52 to drive or limit the rotation of the rope drum mechanism 51, thereby extending or retracting the rope body and fixing the length of the rope extending out of the rear side plate 2.

[0087] Combination Figures 8 to 10The locking mechanism 53 includes: a locking disk 6, which is mounted on the rear side plate 2 by screws, and a plurality of tooth grooves 61 are arranged on the inner wall of the locking disk 6; a locking member 7, whose end surface is provided with a rotating shaft 71 and a locking tooth 72, the rear end of the rotating shaft 71 passes through the opening on the shell 1 through the rope disk mechanism 51 and is inserted into the connecting sleeve 25 of the rear side plate 2, and the locking tooth 72 is movably engaged with the tooth disk 52, and the front end of the locking member 7 is placed on the outer side of the rear side plate 2; a locking portion 73 is arranged at the side end of the locking member 7, the locking portion 73 is a spring sheet and has a tendency to move away from the center of the locking member 7, and the end of the locking portion 73 is formed with a locking tooth 731 The engaging teeth 731 are movably engaged in the tooth grooves 61 to limit the rotation of the locking piece 7 on the locking disk 6. By rotating the locking piece 7, the locking portion 73 is elastically deformed so that the engaging teeth 731 are engaged with different tooth grooves 61, so that the locking piece 7 drives the toothed disk 52 to rotate through the locking teeth 72, thereby driving the rope drum mechanism 51 to rotate, and finally realizing the rope body extending out of the rear side plate 2; one side of the tooth groove 61 is inclined, and when the locking mechanism 53 is locked, the locking piece 7 rotates in the opposite direction, and the engaging teeth 731 will directly abut against the side wall of the tooth groove 61, thereby limiting the rotation of the rope drum mechanism 51 and preventing the rope body from being pulled out suddenly.

[0088] Combination Figures 8 to 10 The locking mechanism 53 further includes: a rotating cover 8, which is mounted on the locking member 7 and is used to drive the locking member 7 to rotate, and the end of the rotating cover 8 can be connected to the locking member 7 through the opening of the shell 1; a limiting portion 81 and an anti-slip portion 82 are provided on the inner side wall of the rotating cover 8, and an annular groove 62 is provided on the outer side wall of the locking disk 6, and the limiting portion 81 or the anti-slip portion 82 movably abuts against the side wall of the annular groove 62; a clamping portion 83 is provided on the rotating cover 8, and a clamping groove 84 is provided on the clamping portion 83, and a clamping strip 74 is provided on the locking member 7, and the clamping strip 74 is movably placed in the clamping groove 84;

[0089] When the rotating cover 8 is pulled, the anti-slip portion 82 abuts against the side wall of the annular groove 62 to prevent the rotating cover 8 from being separated from the locking disk 6. When the rotating cover 8 drives the locking member 7 to move, the engaging teeth 731 of the locking portion 73 are separated from the tooth groove 61 of the locking disk 6, so that the rope drum mechanism 51 is not constrained by the locking member 7 and rotates, thereby realizing the extension or retraction of the rope body on the rope drum mechanism 51.

[0090] When the rotating cover 8 is pressed, the limiting portion 81 and the anti-slip portion 82 are both placed in the annular groove 62. The limiting portion 81 is used to prevent the rotating cover 8 from driving the locking member 7 to move, thereby preventing the locking member 7 from separating from the locking disk 6 without being constrained by the rotation of the locking disk 6. The anti-slip portion 82 is used to prevent the rotating cover 8 from extending too far into the rear side plate 2.

[0091] Combination Figures 8 to 10The rope drum mechanism 51 includes: a rope drum base 54, a shaft sleeve 541 is provided in the middle of which, and the shaft sleeve 541 is sleeved on the connecting sleeve 25 of the rear side plate 2; a rope drum partition 55, which is sleeved on the shaft sleeve 541; the toothed disc 52 is installed at the front end of the shaft sleeve 541, and the rope drum partition 55 is located between the rope drum base 54 and the toothed disc 52, dividing the rope receiving cavity 56 into cavity 1 and cavity 2; the front ends of the rope drum base 54 and the rope drum partition 55 are both provided with a positioning ring 1 91, and a positioning protrusion 92 is provided in the positioning ring 1 91; the rear ends of the rope drum partition 55 and the toothed disc 52 are both provided with a positioning ring 2 93, and the edge of the positioning ring 2 93 is recessed toward the center to form a positioning groove 94;

[0092] When the rope drum base 54 is connected to the rope drum partition 55, the positioning ring 1 91 at the front end of the rope drum base 54 abuts against the rear end of the rope drum partition 55, and the positioning ring 2 93 at the rear end of the rope drum partition 55 abuts against the inner wall of the positioning ring 1 91 of the rope drum base 54, and the positioning protrusion 92 of the rope drum base 54 is clamped in the positioning groove 94 of the rope drum partition 55, so that the rope drum base 54 and the rope drum partition 55 can rotate synchronously;

[0093] When the rope drum partition 55 and the toothed disc 52 are connected, the positioning ring 1 91 at the front end of the rope drum partition 55 abuts against the rear end of the toothed disc 52, and the positioning ring 2 93 at the rear end of the toothed disc 52 abuts against the inner wall of the positioning ring 1 91 of the rope drum partition 55, and the positioning protrusion 92 of the rope drum partition 55 is clamped in the positioning groove 94 of the toothed disc 52, thereby realizing the synchronous rotation of the rope drum partition 55 and the toothed disc 52.

[0094] The upper end of the rear side plate 2 is provided with a mounting groove, in which a hook is movably installed, and the lower end of the hook has two through holes, through which the rope passes in turn, and the two ends of the rope are respectively wound in cavity one and cavity two, so that one rope is formed between through hole one and cavity one, and another rope is formed between through hole one and cavity two, which is equivalent to treating one rope as two ropes; when the hook is pulled out, the rope extends out of cavity one and cavity two to wrap around the object, and at the same time the hook can hook the bottom plate 1 to fix the length of the rope, and the rope collection cavity 56 is divided into cavity one and cavity two to prevent the rope from being knotted when it is retracted, so that the rope is orderly after being stored; at the same time, the rope passes through the two through holes in turn, so that the hook can slide on the rope, so that the length of the rope extending from the two through holes of the hook can be adjusted, so that both ropes can be tightened and fixed.

[0095] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

[0096] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0097] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0098] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A flatbed vehicle with a rotatable pull rod, characterized in that: include: A bottom plate (1) having a roller (11) disposed at its lower end; A rear side plate (2) is hinged to the rear end of the bottom plate (1), and the rear side plate (2) can be fixed to the bottom plate (1) via a rotation-limiting structure, and a receiving groove (21) is provided on the rear side surface of the rear side plate (2); A pull rod (3) which is hinged to the rear end of the base plate (1), and the pull rod (3) is movably engaged in the receiving groove (21); When the flatbed cart is pulled to move backward, the pull rod (3) is disengaged from the receiving groove (21), so that the pull rod (3) rotates on the bottom plate (1), thereby achieving pulling of the flatbed cart; When the flatbed cart is pushed to move forward, the pull rod (3) is placed in the accommodating groove (21), so that the pull rod (3) abuts against the rear side plate (2), thereby pushing the flatbed cart.

2. A flatbed vehicle with a rotatable pull rod according to claim 1, characterized in that: At least one limiting member (211) is provided on the inner side wall of the containing groove (21); When the pull rod (3) is placed in the accommodating groove (21), the limiting member (211) abuts against the pull rod (3) to limit the pull rod (3) from leaving the accommodating groove (21).

3. A flatbed vehicle with a rotatable pull rod according to claim 1 or 2, characterized in that: The rotation limiting structure comprises: A slot (12) is arranged on the bottom plate (1), a hinge seat (13) protrudes from the rear end of the bottom plate (1), and a strip-shaped hole (131) is opened on the side wall of the hinge seat (13); A plug-in portion (22) is arranged at the lower end of the rear side plate (2), the plug-in portion (22) is provided with an opening (23), and the opening (23) extends into the rear side plate (2) to form an avoidance cavity (24); The plug-in portion (22) is provided with a hinge shaft (220), a portion of the hinge shaft (220) is located at the opening (23), and the hinge shaft (220) located in the opening (23) is inserted into the strip-shaped hole (131); When the hinge shaft (220) is placed at the upper end of the strip hole (131), the plug-in portion (22) is disengaged from the slot (12), thereby realizing the rotation of the rear side plate (2); When the hinge shaft (220) is placed at the lower end of the strip hole (131), the plug-in portion (22) is inserted into the slot (12), thereby limiting the rotation of the rear side plate (2).

4. A flatbed vehicle with a rotatable pull rod according to claim 3, characterized in that: The hinge seat (13) is provided with a hinge hole (132), the hinge hole (132) is used to hinge the pull rod (3), and the side wall of the avoidance cavity (24) is connected to the side wall of the accommodating groove (21); When the rear side plate (2) rotates on the bottom plate (1), the pull rod (3) can rotate along with the rear side plate (2).

5. A flatbed vehicle with a rotatable pull rod according to claim 3, characterized in that: The upper end surface of the bottom plate (1) is recessed downward to form a card slot (14), the front side of the card slot (14) is connected to the rear side of the slot (12), and a locking member (4) is slidably arranged in the card slot (14); A limiting groove (221) is provided at the side end of the plug-in portion (22); When the plug-in portion (22) is inserted into the slot (12), the end of the locking member (4) extends into the slot (12) and is inserted into the limiting groove (221), thereby limiting the plug-in portion (22) from being separated from the slot (12).

6. A flatbed vehicle with a rotatable pull rod according to claim 5, characterized in that: The left and right sides of the card slot (14) are both provided with anti-slip grooves (15), a limiting protrusion (151) is arranged in the anti-slip groove (15), and the two sides of the locking member (4) are both provided with anti-slip protrusions (41); When the locking member (4) is placed in the card slot (14), the anti-slip protrusion (41) is placed in the anti-slip groove (15), and the movement of the locking member (4) in the card slot (14) is limited by the limiting protrusion (151).

7. A flatbed vehicle with a rotatable pull rod according to claim 1 or 2 or 4 or 5 or 6, characterized in that: Also includes: A rope storage device (5) is arranged on the rear side plate (2), and the rope can extend from the rear side plate (2); The rope storage device (5) comprises: A rope drum mechanism (51) is rotatably connected to the rear side plate (2), and a rope receiving cavity (56) for winding a rope is provided on the rope drum mechanism (51); A toothed disc (52) is mounted at the front end of the rope disc mechanism (51) and rotates along with the rope disc mechanism (51); A locking mechanism (53) is mounted on the rear side plate (2), and the locking mechanism (53) cooperates with the toothed disc (52) to drive or restrict the rope disc mechanism (51) to rotate.

8. A flatbed vehicle with a rotatable pull rod according to claim 7, characterized in that: The locking mechanism (53) comprises: A locking plate (6) mounted on the rear side plate (2), wherein a plurality of tooth grooves (61) are arranged on the inner wall of the locking plate (6); A locking member (7), the end surface of which is provided with a rotating shaft (71) and a locking tooth (72), the rear end of the rotating shaft (71) passes through the rope disc mechanism (51) and is inserted into the connecting sleeve (25) of the rear side plate (2), and the locking tooth (72) is movably engaged with the toothed disc (52); A locking portion (73) is provided at the side end of the locking member (7), and a locking tooth (731) is formed at the end of the locking portion (73). The locking tooth (731) is movably engaged in the tooth groove (61) to limit the rotation of the locking member (7) on the locking disk (6).

9. A flatbed vehicle with a rotatable pull rod according to claim 8, characterized in that: The locking mechanism (53) further comprises: A rotating cover (8) is mounted on the locking member (7) and is used to drive the locking member (7) to rotate; A limiting portion (81) and an anti-slip portion (82) are provided on the inner side wall of the rotating cover (8), an annular groove (62) is provided on the outer side wall of the locking disk (6), and the limiting portion (81) or the anti-slip portion (82) movably abuts against the side wall of the annular groove (62); The rotating cover (8) is provided with a clamping portion (83), the clamping portion (83) is provided with a clamping groove (84), the locking member (7) is provided with a clamping strip (74), and the clamping strip (74) is movably disposed in the clamping groove (84).

10. A flatbed vehicle with a rotatable pull rod according to claim 8 or 9, characterized in that: The rope disc mechanism (51) comprises: A rope drum base (54) is provided with a shaft sleeve (541) at its center, and the shaft sleeve (541) is sleeved on the connecting sleeve (25) of the rear side plate (2); A rope drum partition (55) sleeved on the shaft sleeve (541); The toothed disc (52) is mounted on the front end of the shaft sleeve (541), and the rope disc partition (55) is located between the rope disc base (54) and the toothed disc (52), dividing the rope collecting cavity (56) into cavity one and cavity two; The front ends of the rope drum base (54) and the rope drum partition (55) are both provided with a positioning ring (91), and a positioning protrusion (92) is provided inside the positioning ring (91); The rear ends of the rope disc partition plate (55) and the toothed disc (52) are both provided with a second positioning ring (93), and the edge of the second positioning ring (93) is recessed toward the center to form a positioning groove (94); When the rope reel base (54) is connected to the rope reel partition (55), the first positioning ring (91) at the front end of the rope reel base (54) abuts against the rear end of the rope reel partition (55), and the second positioning ring (93) at the rear end of the rope reel partition (55) abuts against the inner wall of the first positioning ring (91) of the rope reel base (54), and the positioning protrusion (92) of the rope reel base (54) is clamped in the positioning groove (94) of the rope reel partition (55), so that the rope reel base (54) and the rope reel partition (55) can rotate synchronously; When the rope disc partition (55) and the toothed disc (52) are connected, the positioning ring 1 (91) at the front end of the rope disc partition (55) abuts against the rear end of the toothed disc (52), and the positioning ring 2 (93) at the rear end of the toothed disc (52) abuts against the inner wall of the positioning ring 1 (91) of the rope disc partition (55), and the positioning protrusion (92) of the rope disc partition (55) is engaged in the positioning groove (94) of the toothed disc (52), thereby realizing the synchronous rotation of the rope disc partition (55) and the toothed disc (52).

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