Wear-resistant metal support backpack

Abstract

The utility model relates to the technical field of knapsacks, and provides a wear-resistant metal support knapsack which comprises a knapsack body, shoulder straps arranged on the knapsack body and a support arranged on the knapsack body, a connecting piece is arranged on the knapsack body, and the support is detachably connected to the knapsack body through the connecting piece; the support comprises an inverted-U-shaped bearing support, a first connecting support arranged in the middle of the bearing support, a second connecting support arranged below the first connecting support and a damping frame arranged on the side, away from the bag body, of the second connecting support, and a waistband is detachably connected to the damping frame. The bearing support comprises a transverse rod parallel to the first connecting support and two vertical rods arranged at the two ends of the transverse rod, and the two ends of the first connecting support and the two ends of the second connecting support are slidably connected to the vertical rods on the two sides correspondingly. The bearing support is provided with two adjusting assemblies limiting sliding of the first connecting support and the second connecting support respectively. The backpack has the advantage that the comfort degree is improved when the backpack is used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of backpacks, in particular to a wear-resistant metal support backpack. BACKGROUND

[0002] Backpacks are a common daily necessity and are very common in daily life. It is usually composed of a bag body and a strap, and a certain amount of items can be placed inside the bag body to provide convenience for travel and travel.

[0003] Because some backpacks have a large capacity, if they are loaded with heavy things, the pressure on the user's neck and back will be relatively large. To this end, some in the prior art will set a support on the side of the backpack that fits the back to provide strong support, effectively distributing the weight of the backpack and improving stability and comfort when carrying heavy objects.

[0004] The support in the prior art specifically includes a load-bearing support in the shape of an inverted U, a first connecting support connected to the middle of the load-bearing support, a second connecting support connected to both ends of the bottom, and a shock-absorbing frame connected to the second connecting support. The first connecting support and the second connecting support are arranged parallel to each other, and the shock-absorbing frame is arranged corresponding to the waist.

[0005] Because the load-bearing support is usually of constant size, the height position of the first connecting support and the shock-absorbing frame it sets is relatively fixed, but because different people prefer different carrying positions, and as the weight and height of the items in the backpack vary, the comfortable carrying position also varies, and the first connecting support and the shock-absorbing frame of constant height will affect comfort at this time, so further improvement is needed. CONTENT OF THE UTILITY MODEL

[0006] In order to improve the comfort of using the backpack, the present application provides a wear-resistant metal support backpack.

[0007] The wear-resistant metal support backpack provided by the present application adopts the following technical solutions:

[0008] The utility model provides a kind of wear-resistant metal bracket backpack, including bag body, shoulder strap arranged on bag body and bracket arranged on bag body, connecting piece is provided on the bag body, and the bracket is detachably connected to bag body by connecting piece;The bracket includes the bearing bracket of inverted U type, the first connecting bracket arranged in the middle of bearing bracket, the second connecting bracket arranged below first connecting bracket and the shock-absorbing frame arranged on the side of second connecting bracket away from bag body, and the waistband is detachably connected on the shock-absorbing frame;The bearing bracket includes the horizontal bar parallel to first connecting bracket and two vertical rods arranged in the two ends of horizontal bar, and the two ends of first connecting bracket and second connecting bracket are respectively slidably connected to two vertical rods, and two adjusting components for limiting first connecting bracket and second connecting bracket respectively are provided on the bearing bracket.

[0009] By using the above technical scheme, by sliding the first connecting bracket and the second connecting bracket to the corresponding position, the height of the first connecting bracket arranged in the middle and the shock-absorbing frame provided with the waistband can be adjusted to adapt to the carrying height of different users by limiting the sliding and fixing through the adjusting component after sliding to the corresponding position, so as to improve the comfort of the user using the backpack. And the connecting piece is arranged to detachably connect the bracket to the bag body, so as to select whether to install according to the user's needs and the weight of the items in the bag.

[0010] Preferably, the vertical rod is a round rod, and the two ends of the first connecting bracket and the second connecting bracket protrude sliding plates slidably connected to the horizontal bar, and the adjusting component includes an adjusting bolt, the sliding plate is provided with a first through hole for the adjusting bolt to pass through, and the outer wall of the vertical rod is provided with a threaded hole for the adjusting bolt to threadedly connect, and the threaded holes are arranged at intervals along the height direction of the vertical rod.

[0011] By using the above technical scheme, when the sliding plate is slid to the corresponding position, the first through hole and the threaded hole are correspondingly arranged, the adjusting bolt is threadedly connected to the threaded hole to fix the first connecting bracket and the second connecting bracket.

[0012] Preferably, the outer wall of the vertical rod is provided with a first sliding groove along its own height direction, and the threaded hole is arranged in the inner wall of the first sliding groove, and the adjusting bolt is slidably connected to the first sliding groove along the height direction.

[0013] By using the above technical scheme, by arranging the first sliding groove, the distance between the first through hole and the threaded hole is increased, and the time and difficulty of passing the adjusting bolt through the first through hole after the adjusting bolt is separated from the threaded hole are reduced, and the installation speed is increased.

[0014] Preferably, the vertical rod is a round rod, the adjusting assembly comprises a second fixed plate fixedly connected to the lower end of the vertical rod, a screw rod rotatably arranged in the second fixed plate, a sliding ring threadedly connected to the screw rod, and a control member for controlling rotation of the screw rod, and the sliding ring is provided with two and is connected to the first connecting bracket and the second connecting bracket respectively.

[0015] By using the above technical scheme, the range of adjustment is relatively large by setting the control member to control the screw rod, thereby further improving the adaptability of the backpack.

[0016] Preferably, the adjusting assembly further comprises a limiting sleeve coaxially sleeved on the screw rod, a second sliding groove is formed in the side wall of the limiting sleeve, the sliding ring protrudes a connecting strip for connecting the first connecting bracket or the second connecting bracket, and the connecting strip slides along the length direction of the second sliding groove.

[0017] By using the above technical scheme, after the driving block is slid away from the fixed sleeve, a rotating force is applied, and the screw rod is driven to rotate under the action of the limiting block, so as to change the height position of the sliding plate, and the driving block is clamped in the fixed sleeve under the action of the spring to limit the rotation of the screw rod.

[0018] Preferably, the screw rod is provided with at least two, and the sliding rings arranged on the two screw rods are connected to the first connecting bracket and the second connecting bracket respectively.

[0019] By using the above technical scheme, the positions of the first connecting bracket and the second connecting bracket in the height direction of the vertical rod can be adjusted respectively, and the comfort of using the backpack can be further improved.

[0020] Preferably, the bracket further comprises a first connecting plate arranged in the middle of the horizontal rod, the length direction of the first connecting plate is parallel to the length direction of the vertical rod, the upper end of the first connecting plate is fixedly connected to the horizontal rod, the first connecting bracket and the second connecting bracket are slidably connected to the first connecting plate, and the first connecting plate is also provided with an adjusting assembly.

[0021] By using the above technical scheme, the first connecting plate is arranged to strengthen the connection strength between the first connecting bracket, the second connecting bracket and the load-bearing bracket.

[0022] Preferably, the waistband comprises a first waistband arranged in parallel with the second connecting bracket, a second waistband arranged at both ends of the first waistband, and a first male buckle and a first female buckle arranged away from each other at both ends of the second waistband, the first male buckle is inserted into the first female buckle, a first female magic tape is arranged at the middle part of the first waistband, first connecting belts and second connecting belts are fixedly connected at both ends of the first female magic tape, and first through rings are arranged at both ends of the second connecting bracket for the first connecting belts and the second connecting belts to pass through; a first female magic tape is arranged on the surface of the first connecting belt close to the first female magic tape, the first female magic tape is bonded to the first female magic tape, a second female magic tape is arranged on the surface of the first connecting belt away from the first female magic tape, and a second male magic tape is arranged on the second connecting belt and bonded to the second female magic tape.

[0023] By adopting the above technical scheme, the first waistband and the second waistbands at both ends are attached to the waist of the user through the insertion between the first male buckle and the second female buckle, the bonding between the first female magic tape and the first male magic tape and the bonding between the second female magic tape and the second male magic tape are arranged to improve the connection strength between the second connecting bracket, and the thickness of the waistband can be further improved to reduce the shock feeling of the shock-absorbing frame.

[0024] Preferably, the bag body is made of nylon fabric.

[0025] In summary, the utility model has the following beneficial effects:

[0026] By sliding the first connecting bracket and the second connecting bracket to the vertical rods on both sides, the height of the first connecting bracket arranged in the middle and the shock-absorbing frame provided with the waistband can be adjusted to adapt to the carrying height of different users according to the carrying needs of the user, so as to improve the comfort of the user using the backpack. And the connecting piece is arranged to detachably connect the bracket to the bag body, so as to select whether to install according to the needs and the weight of the articles in the bag body. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a front structure schematic view of embodiment 1 of the application;

[0028] Figure 2 is a back structure schematic view of embodiment 1 of the application;

[0029] Figure 3 is a back structure schematic view of the storage bag in embodiment 1 of the application;

[0030] Figure 4 is a structure schematic view of the bracket in embodiment 1 of the application;

[0031] Figure 5 is a structural schematic diagram of a waistband in Embodiment 1 of the present application;

[0032] Figure 6 is a structural schematic diagram of a support in Embodiment 2 of the present application;

[0033] Figure 7 is a structural schematic diagram of an adjusting assembly in Embodiment 3 of the present application;

[0034] Figure 8 is Figure 7 is a partial enlarged schematic diagram of part A in FIG. 8.

[0035] Explanation of Reference Numerals: 1, bag body; 11, bunching member; 111, bunching rope; 112, adjusting buckle; 12, end cover; 121, elastic rope; 13, zipper; 14, first fixing band; 141, first suture part; 142, first threading passage; 15, first connecting band; 2, support; 21, load-bearing support; 211, horizontal rod; 212, vertical rod; 2121, first sliding groove; 22, first connecting plate; 221, second through hole; 23, first connecting support; 24, second connecting support; 241, second connecting plate; 242, third connecting plate; 2421, first through ring; 2422, third through hole; 243, first fixing plate; 2431, fifth connecting band; 25, shock-absorbing support; 26, sliding plate; 261, fixing bolt; 27, threaded hole; 28, waistband; 281, first waistband; 282, second waistband; 283, second sub-buckle; 284, second female buckle; 285, first female magic tape; 286, second connecting band; 2861, second female magic tape; 287, third connecting band; 2871, second sub-magic tape; 288, first sub-magic tape; 3, shoulder strap; 31, back plate; 32, fourth connecting band; 33, third female buckle; 34, third sub-buckle; 4, connecting member; 41, abutting plate; 42, second through ring; 43, sixth connecting band; 44, second eyelet buckle; 45, third eyelet buckle; 46, seventh connecting band; 47, eighth connecting band; 48, fourth eyelet buckle; 5, storage bag; 51, bag body; 52, bag cover; 53, second fixing band; 54, third fixing band; 55, fourth fixing band; 551, second suture part; 552, second threading passage; 6, first female buckle; 61, first sub-buckle; 7, adjusting assembly; 71, adjusting bolt; 72, adjusting nut; 73, second fixing plate; 74, screw rod; 741, third sliding groove; 742, limiting groove; 75, limiting sleeve; 751, second sliding groove; 76, sliding ring; 77, control member; 771, fixing sleeve; 772, driving block; 773, sliding rod; 774, spring; 775, limiting block; 8, first eyelet buckle. DETAILED DESCRIPTION

[0036] The following description will be made in conjunction with the accompanying drawings Figures 1-8 The application will be further described in detail.

[0037] The application discloses a wear-resistant metal support backpack.

[0038] Embodiment 1

[0039] A wear-resistant metal support backpack, referring to Figure 1 、 Figure 2 , comprising a bag body 1, a support 2 arranged on the bag body 1, and a shoulder strap 3 arranged on the bag body 1, the bag body 1 is provided with a connecting piece 4, and the support 2 is detachably connected to the bag body 1 through the connecting piece 4.

[0040] In this embodiment, the bag body 1 is made of nylon fabric and has strong wear resistance, the bag body 1 has a bag cavity, the top of the bag body 1 is provided with a bag opening communicating with the bag cavity, and the top of the bag body 1 is provided with a binding piece 11 for binding the bag opening, the binding piece 11 specifically comprises a binding rope 111 arranged around the bag opening and an adjusting buckle 112 for the end of the binding rope 111 to pass through, since the adjusting buckle 112 is prior art, no more description is made here.

[0041] The upper end of the bag body 1 is provided with an end cover 12 for covering the bag opening, a zipper 13 is arranged between the end cover 12 and the bag body 1, the zipper 13 specifically comprises zipper teeth arranged on one side of the bag body 1 and the end cover 12 respectively, and a zipper head for engaging the zipper teeth on both sides, so as to detach the end cover 12, and the lower end of the end cover 12 close to the bag opening is provided with an elastic rope 121.

[0042] A plurality of storage bags 5 are detachably connected to the bag body 1, the storage bag 5 specifically comprises a bag body 51 which is open at the top and is in a cylindrical shape, and a bag cover 52 which is rotationally connected to the bag body 51 to cover the bag body 51, the bag cover 52 is fixedly connected with a first female buckle 6, and the bag body 51 is provided with a first male buckle 61 which is inserted into the first female buckle 6.

[0043] Referring to Figure 1 、 Figure 3 , for the connection between the storage bag 5 and the bag body 1, specifically, the outer surface of the bag body 1 is provided with a first fixing belt 14, the first fixing belt 14 extends to both sides of the bag body 1, the first fixing belt 14 is arranged at intervals along the height direction of the bag body 1, the first fixing belt 14 is arranged at intervals along the length direction of the first fixing belt 14, and the adjacent first fixing belt 141 has a plurality of first through channels 142 on the first fixing belt 14.

[0044] The second fixing belt 53 is fixedly connected to the surface of the bag body 1 and penetrates the first penetrating channel 142. The second fixing belt 53 is arranged at intervals along the length direction of the storage bag 5, and at least two second fixing belts 53 are arranged. The end of the second fixing belt 53 is fixedly connected to the third fixing belt 54 with high hardness, and the length of the third fixing belt 54 is less than that of the second fixing belt 53. The back of the bag body 51 is arranged at intervals along the height direction of the bag body 51, and the fourth fixing belt 55 is arranged at intervals along the length direction of the fourth fixing belt 55. The second penetrating channel 552 is arranged on the fourth fixing belt 55. After the end of the fourth fixing belt 55 and the third fixing belt 54 penetrates the first penetrating channel 142, the fourth fixing belt 55 is bent and penetrates the second penetrating channel 552. The friction between the third fixing belt 54, the first fixing belt 14 and the fourth fixing belt 55 is used to install the storage bag 5 on the bag body 1, and the storage bag 5 is also convenient to disassemble. Further, in order to increase the number of storage bags 5, the end cover 12 is also provided with the first fixing belt 14.

[0045] In order to fix a plurality of storage bags 5, the outer surface of the bag body 1 is provided with the first connecting belt 15, and the first sub-buckle 61 is arranged on the first connecting belt 15. The first female buckle 6 is arranged on the end cover 12. The first sub-buckle 61 and the first female buckle 6 are inserted and fixed, or a hook buckle is arranged on the end cover 12 to fix the connecting rope. The specific arrangement is based on the demand.

[0046] Referring to Figure 4 The support 2 specifically includes a bearing support 21 in the shape of an inverted U, a first connecting plate 22 arranged on the bearing support 21, a first connecting support 23 arranged on the bearing support 21, a second connecting support 24 arranged below the first connecting support 23, and a damping support 25 arranged on the side of the second connecting support 24 away from the bag body 1. The bearing support 21 specifically includes a horizontal rod 211 arranged parallel to the first connecting support 23 and two vertical rods 212 arranged at the two ends of the horizontal rod 211. The horizontal rod 211 and the vertical rod 212 are both circular rods.

[0047] The length direction of the first connecting plate 22 is parallel to the length direction of the vertical rod 212. The first connecting plate 22 is made of a plate material. The upper end of the first connecting plate 22 is fixedly connected to a sliding plate 26 in the shape of a semicircular plate. The sliding plate 26 abuts against the horizontal rod 211. The sliding plate 26 penetrates a fixing bolt 261 which is threadedly connected to the horizontal rod 211.

[0048] The two ends of the first connecting support 23 and the second connecting support 24 are respectively slidably connected to the two vertical rods 212. The bearing support 21 is provided with two adjusting assemblies 7 for limiting the first connecting support 23 and the second connecting support 24, respectively.

[0049] In the embodiment, the first connecting support 23 is arranged by a plate material, the length direction of the first connecting support 23 is parallel to the length direction of the horizontal rod 211, and the first connecting support 23 is arranged at the middle portion of the vertical rod 212, both ends of the first connecting support 23 are also fixedly connected with the sliding plates 26, and the sliding plates 26 are slidingly connected with the vertical rod 212. For the connection between the first connecting support 23 and the bearing support 21, the adjusting assembly 7 comprises an adjusting bolt 71, a first through hole is arranged through the sliding plate 26 and used for penetrating the adjusting bolt 71, a threaded hole 27 is arranged along the radial direction of the outer wall of the vertical rod 212 and used for screwing the adjusting bolt 71, and a plurality of threaded holes 27 are arranged along the height direction of the vertical rod 212. At this time, the first connecting support 23 is also slidingly connected with the first connecting plate 22, at this time, the adjusting assembly 7 further comprises an adjusting nut 72 which is screw-connected with the adjusting bolt 71, and a second through hole 221 is arranged through the first connecting plate 22 and used for penetrating the adjusting bolt 71, and a plurality of second through holes 221 are arranged along the length direction of the first connecting plate 22.

[0050] The second connecting support 24 specifically comprises a second connecting plate 241 which is parallel to the length direction of the first connecting support 23, two third connecting plates 242 which are respectively fixedly connected with both ends of the second connecting plate 241, and a first fixing plate 243 which is fixedly connected with the third connecting plate 242, the third connecting plate 242 is arranged perpendicularly to the second connecting plate 241, and the first fixing plate 243 is fixedly connected with the sliding plate 26 which is slidingly connected with the vertical rod 212. For the damping support 25, the damping support 25 can be arranged in an arc shape, a U shape or a V shape, and is arranged according to the actual demand, in the embodiment, the damping support 25 is arranged in a V shape, and both ends of the damping support 25 are respectively fixedly connected with the third connecting plates 242.

[0051] Referring to Figure 4 , Figure 5In the embodiment, the shock-absorbing frame 25 is detachably connected with a waistband 28. The waistband 28 specifically includes a first waistband 281 arranged parallel to the second connecting bracket 24, second waistbands 282 arranged at both ends of the first waistband 281, and second male buckles 283 and second female buckles 284 arranged at the ends of the two second waistbands 282 away from each other. The second male buckle 283 is inserted into the second female buckle 284. The middle part of the first waistband 281 is provided with a first female Velcro 285. Both ends of the first waistband 281 located at the first female Velcro 285 are fixedly connected with a second connecting band 286 and a third connecting band 287, respectively. The third connecting plates 242 on both sides are rotatably connected with first ring penetrating rings 2421 for the second connecting band 286 and the third connecting band 287 to penetrate. The surface of the first connecting band 15 close to the first female Velcro 285 is provided with a first male Velcro 288, and the first male Velcro 288 is bonded to the first female Velcro 285. The surface of the second connecting band 286 away from the first male Velcro 288 is provided with a second female Velcro 2861, and the third connecting band 287 is provided with a second male Velcro 2871 bonded to the second female Velcro 2861.

[0052] The two shoulder straps 3 are fixedly connected with a back plate 31, which abuts against the abutting plate 41 and the upper middle part of the bracket 2. The shoulder strap 3 is detachably connected to the bag body 1. Specifically, the end cap 12 is fixedly connected with a first grommet 8, the shoulder strap 3 is fixedly connected with a fourth connecting band 32 penetrating the first grommet 8, the lower end of the shoulder strap 3 is fixedly connected with a third female buckle 33, the first fixed plate 243 is provided with a fifth connecting band 2431, and the fifth connecting band 2431 is fixedly connected with a third male buckle 34 inserted into the third female buckle 33.

[0053] The connecting piece 4 specifically includes an abutting plate 41 fixedly connected to the bag body 1 to abut against the bracket 2 and the back plate 31, a second penetrating ring 42 fixedly connected to the upper end of the bag body 1, a sixth connecting band 43 fixedly connected to the shoulder strap to penetrate the second penetrating ring 42, a second grommet 44 fixedly connected to the lower end of the back plate 31 for the sixth connecting band 43 to penetrate, third grommets 45 fixedly connected to both sides of the bag body 1, a seventh connecting band 46 fixedly connected to the bag body 1 to abut against the vertical rod 212 and penetrate the third grommet 45, an eighth connecting band 47 fixedly connected to the second waistband 282, and a fourth grommet 48 fixedly connected to the bag body 1 for the eighth connecting band 47 to penetrate. The eighth connecting band 47 penetrates the first penetrating ring 2421, and the third connecting plate 242 is provided with a third penetrating hole 2422 for the eighth connecting band 47 to penetrate.

[0054] The implementation principle of the wear-resistant metal support backpack of the embodiment of the application is as follows: by slidingly connecting the first connecting support 23 and the second connecting support 24 to the vertical rods 212 on the two sides, the first connecting support 23 and the shock-absorbing support 25 provided with the waistband 28 arranged in the middle can be adjusted in height to adapt to the carrying height of different users according to the carrying needs of the user, after being slid to the corresponding position, and being fixed by the adjusting assembly 7 after sliding to limit the sliding, so as to improve the comfort of the user using the backpack. And the connecting piece 4 is arranged, so that the support 2 can be detachably connected to the bag body 1, so as to select whether to need to be installed according to the own needs and the weight of the articles in the bag body 1.

[0055] Embodiment 2

[0056] Reference Figure 6 The difference from embodiment 1 is that the outer peripheral wall of the vertical rod 212 is provided with a first sliding groove 2121 along the height direction thereof, the threaded hole 27 is arranged in the inner wall of the first sliding groove 2121, and the adjusting bolt 71 is slidingly connected to the first sliding groove 2121 along the height direction.

[0057] Embodiment 3

[0058] Reference Figure 7 , Figure 8 The difference from embodiment 1 is that in the embodiment, the adjusting assembly 7 comprises a second fixed plate 73 fixedly connected to the lower end of the vertical rod 212, a screw rod 74 rotatably penetrating the second fixed plate 73, a limiting sleeve 75 coaxially sleeved on the screw rod 74, a sliding ring 76 threadedly connected to the screw rod 74, and a control piece 77 controlling the rotation of the screw rod 74, the side wall of the limiting sleeve 75 is provided with a second sliding groove 751, and a connecting strip is arranged between the sliding ring 76 and the first connecting support 23 and between the sliding ring 76 and the second connecting support 24, or the connecting strip is arranged between the sliding ring 76 and the sliding plate 26, which is specifically arranged according to the needs, the connecting strip penetrates the second sliding groove 751 and slides along the length direction of the second sliding groove 751.

[0059] The control piece 77 specifically comprises a fixed sleeve 771 fixedly connected to the second fixed plate 73, a driving block 772 slidingly embedded in the fixed sleeve 771, a sliding rod 773 fixedly connected to the driving block 772, and a spring 774 coaxially sleeved on the sliding rod 773, the lower end surface of the screw rod 74 is provided with a third sliding groove 741 for slidingly connecting the sliding rod 773, the outer peripheral wall of the sliding rod 773 protrudes to limit the block 775, and the inner wall of the third sliding groove 741 is provided with a limiting groove 742 for slidingly connecting the limiting block 775, in the embodiment, the spring 774 forces the sliding rod 773 to move towards the screw rod 74, and the outer peripheral wall of the driving block 772 is sleeved with an elastic pad.

[0060] In the embodiment, the screw rod 74 is provided with at least two, and the sliding ring 76 provided on the two screw rods 74 is connected with the first connecting support 23 and the second connecting support 24 respectively.

[0061] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A wear-resistant metal cradle backpack, characterized in that: The utility model provides a kind of backpack, including bag (1), shoulder strap (3) being arranged on bag (1) and support (2) being arranged on bag (1), connecting piece (4) is provided on the bag (1), support (2) is detachably connected to bag (1) by connecting piece (4);The support (2) includes the bearing support (21) of inverted U type, the first connecting support (23) being arranged in the middle of bearing support (21), the second connecting support (24) being arranged below first connecting support (23) and the shock-absorbing frame (25) being arranged on the side of second connecting support (24) away from bag (1), detachably connected with waistband (28) on the shock-absorbing frame (25);The bearing support (21) includes the horizontal bar (211) being arranged in parallel with first connecting support (23) and two vertical bars (212) being arranged in the two ends of horizontal bar (211), the two ends of first connecting support (23) and second connecting support (24) are respectively slidably connected to two vertical bars (212), and two adjusting assemblies (7) for adjusting the height positions of first connecting support (23) and second connecting support (24) are provided on the bearing support (21).

2. A metal carrier backpack with wear resistance according to claim 1, characterized in that: The vertical bar (212) is round rod, the two ends of the first connecting support (23) and the second connecting support (24) are protruded with the sliding plate (26) slidably connected to the horizontal bar (211), the adjusting assembly (7) includes adjusting bolt (71), the first through hole is provided on the sliding plate (26) for the adjusting bolt (71) to pass through, the outer wall of the vertical bar (212) is radially provided with the threaded hole (27) for the adjusting bolt (71) to be threadedly connected, and the threaded holes (27) are spaced apart in the height direction of the vertical bar (212).

3. A metal carrier backpack with wear resistance according to claim 2, characterized in that: The outer wall of the vertical bar (212) is provided with the first sliding groove (2121) in the height direction of itself, the threaded holes (27) are arranged on the inner wall of the first sliding groove (2121), and the adjusting bolt (71) is slidably connected to the first sliding groove (2121) in the height direction.

4. The abrasion-resistant metal-frame backpack of claim 1, wherein: The vertical bar (212) is round rod, the adjusting assembly (7) includes the second fixed plate (73) fixedly connected to the lower end of the vertical bar (212), the screw rod (74) rotatably penetrating the second fixed plate (73), the sliding ring (76) threadedly connected to the screw rod (74) and the control member (77) for controlling the rotation of the screw rod (74), and the sliding ring (76) is provided with two and is connected to the first connecting support (23) and the second connecting support (24).

5. A metal carrier backpack with wear resistance according to claim 4, characterized in that: The adjusting assembly (7) further includes the limiting sleeve (75) coaxially sleeved on the screw rod (74), the side wall of the limiting sleeve (75) is provided with the second sliding groove (751), the sliding ring (76) is protruded with the connecting strip for being connected with the first connecting support (23) or the second connecting support (24), and the connecting strip slides in the length direction of the second sliding groove (751).

6. A metal carrier backpack with wear resistance according to claim 4, characterized in that: The control member (77) comprises a fixing sleeve (771) arranged on the second fixing plate (73), a driving block (772) slidably clamped in the fixing sleeve (771), a sliding rod (773) arranged on the driving block (772), and a spring (774) coaxially sleeved on the sliding rod (773), the lower end surface of the screw rod (74) is provided with a third sliding groove (741) for sliding connection of the sliding rod (773), the outer circumferential wall of the sliding rod (773) is provided with a limiting block (775), and the inner wall of the third sliding groove (741) is provided with a limiting groove (742) for sliding connection of the limiting block (775); the spring (774) forces the sliding rod (773) to move towards the screw rod (74).

7. A metal carrier backpack with wear resistance according to claim 4, characterized in that: The screw rod (74) is provided with at least two sliding rings (76), and the sliding rings (76) are connected with the first connecting bracket (23) and the second connecting bracket (24) respectively.

8. The abrasion-resistant metal-frame backpack of claim 1, wherein: The bracket (2) further comprises a first connecting plate (22) arranged at the middle portion of the cross rod (211), the length direction of the first connecting plate (22) is parallel to the length direction of the vertical rod (212), the upper end of the first connecting plate (22) is fixedly connected to the cross rod (211), the first connecting bracket (23) and the second connecting bracket (24) are slidably connected to the first connecting plate (22), and the first connecting plate (22) is also provided with the adjusting assembly (7).

9. The abrasion-resistant metal-frame backpack of claim 1, wherein: The waistband (28) comprises a first waistband (281) arranged parallel to the second connecting bracket (24), a second waistband (282) arranged at both ends of the first waistband (281), and a first male buckle (61) and a first female buckle (6) arranged away from each other at both ends of the second waistband (282), respectively, the first male buckle (61) is inserted into the first female buckle (6), the middle portion of the first waistband (281) is provided with a first female magic tape (285), both ends of the first waistband (281) located at the first female magic tape (285) are fixedly connected with a first connecting belt (15) and a second connecting belt (286), respectively, both ends of the second connecting bracket (24) are provided with a first ring (2421) for the first connecting belt (15) and the second connecting belt (286) to pass through; the surface of the first connecting belt (15) close to the first female magic tape (285) is provided with a first female magic tape (288), the first female magic tape (288) is attached to the first female magic tape (285), the surface of the first connecting belt (15) away from the first female magic tape (288) is provided with a second female magic tape (2861), and the second connecting belt (286) is provided with a second female magic tape (2871) attached to the second female magic tape (2861).

10. The abrasion-resistant metal-frame backpack of claim 1, wherein: The bag body (1) is made of nylon fabric.

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