Barbed nail and roadblock

Abstract

The utility model relates to a roadblock, in particular to a barbed nail and a roadblock. The barbed nail is a hollow pipe, and the upper end face of the barbed nail is an inclined face. The inclination angle of the upper end surface of the barbed nail is 15-25 degrees; barbs with downward tips are arranged on the side surfaces of the barbed nails; the barbs are in the shape of a triangle which is formed by pressing and tilts outwards. The roadblock comprises the barbed nails and further comprises a plurality of chaining plate sets. The two ends of the link plate set are connected through connecting pieces. The chaining plate group comprises an upper chaining plate and a lower chaining plate; the upper chain connecting plate and the lower chain connecting plate are connected in a crossed manner through the connecting piece and a central mounting hole in the lower chain connecting plate; the barbed nails are mounted on the upper link plate through the mounting assembly; and a plurality of barbed nails are arranged. The barbed nails are simple and reasonable in structure and good in tire breaking effect, and the puncture type roadblock is convenient to fold and carry and easy to store, mount and dismount.

Description

Technical Field

[0001] The utility model relates to a roadblock, in particular to a thorn spike and the roadblock. Background Art

[0002] Puncture barriers are suitable for security sites or emergency response areas. They can be deployed on key sections of roads and are an effective roadblock. The thorns of puncture barriers are sharp. When a vehicle tire runs over them, they will be pierced instantly and the air in the tire will be vented through the deflation hole, causing the vehicle to be unable to move forward.

[0003] After the spikes of the existing folding puncture roadblocks are inserted into the tire, the friction between the spikes and the tire is not enough, which makes the spikes unable to be taken out by the tire after entering the tire, affecting the effect of breaking the tire and blocking the vehicle. For example, the patent name is Convenient Tire Breaking Roadblock (Patent No. 201520168600.9), which is composed of multiple sets of tire breaking mechanisms, which are all composed of spike strips, rear strips and spikes; there are multiple spike strips and rear strips, and multiple stainless steel hollow spikes are arranged on the spike strips. The spike strips and rear strips are made of soft rubber material, and there are multiple leather lines on the surface of the spike strips and rear strips; two spike strips and two rear strips form a diamond-shaped tire breaking mechanism through four tubular rivets, and the multiple sets of tire breaking mechanisms are connected into one by a fence connection. There is a need for spikes and roadblocks with good tire breaking effect. Utility Model Content

[0004] In order to solve the problem of unsatisfactory tire-breaking effect in the prior art, a puncture nail and a roadblock are proposed. The puncture nail has a good tire-breaking effect, and the roadblock is convenient to fold and carry, and is easy to install and disassemble.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a thorn nail, which is a hollow tube, and its upper end surface is an inclined surface; it is characterized in that the inclination angle of the upper end surface of the thorn nail is 15°-25°; the side of the thorn nail is provided with a barb with a downward tip;

[0006] The barbs are pressed to form outwardly tilted triangles.

[0007] Preferably, the number of the barbs is one.

[0008] Preferably, the number of the barbs is at least two.

[0009] Preferably, the barbs are arranged in at least one row.

[0010] A roadblock, comprising the spikes; the roadblock also comprises a plurality of link plate groups; the two ends of the link plate groups are connected by a connecting piece;

[0011] The link plate group includes an upper link plate and a lower link plate;

[0012] The upper link plate and the lower link plate are cross-connected through a connecting piece and a central mounting hole on the lower link plate;

[0013] The thorn spikes are installed on the upper link plate through a mounting assembly; the thorn spikes are arranged in plurality.

[0014] Preferably, the installation assembly includes a spike seat and a nut;

[0015] The lower part of the spike seat is installed in the fixing hole of the upper link plate, and an external thread is arranged on the outside thereof;

[0016] A groove is arranged on the upper part of the spike holder, and a rubber ring is installed in the groove;

[0017] The thorn nail is installed on the thorn nail seat.

[0018] Preferably, the number of the spikes is 4, 6, or 8, and the spacing between the spikes is the same.

[0019] Preferably, both ends of the lower link plate are connected to one end of an upper link plate of an adjacent link plate group through connecting pieces and connecting holes, respectively.

[0020] Beneficial effects of the utility model;

[0021] 1. The spike is provided with a pressed and formed barb with the tip facing downward and tilted outward. During use, after the spike punctures the tire, the barb will be easily brought out of the link plate assembly by the wheel tyre due to the effect of the barb, thereby playing a good role in breaking the tire and hindering the vehicle from moving forward.

[0022] 2. The puncture roadblock is easy to fold and carry. There are multiple spikes installed on the roadblock. When the tire is pressed against the roadblock, the spikes can effectively break the tire.

[0023] The piercing nail structure of the utility model is simple and reasonable, and the tire-breaking effect is good. The piercing roadblock is convenient to fold and carry, easy to store, and easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the side structure of the thorn nail in the utility model;

[0025] Figure 2 This is a rear view of the spike in the utility model;

[0026] Figure 3 It is a schematic diagram of the assembly of the link plate group in the utility model;

[0027] In the figure: upper link plate 1, lower link plate 2, central mounting hole 2-1, connecting hole 2-2, mounting assembly 3, spike seat 3-1, nut 3-2, rubber ring 3-3, spike 4, barb 5, connector 6, fixing hole 7. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings.

[0029] like Figure 1-3 As shown, a thorn nail, the thorn nail 4 is a hollow tube, and its upper end surface is an inclined surface; the inclination angle of the upper end surface of the thorn nail 4 is 15°-25°; the side of the thorn nail 4 is provided with a barb 5 with a downward tip. The barb 5 is pressed to form a triangle that is tilted outward.

[0030] Embodiment 1: The barb 5 is set to one.

[0031] Embodiment 2: The number of the barbs 5 is at least two. The number of the barbs 5 is at least one row.

[0032] A roadblock includes such spikes 4 and a plurality of link plate groups; the two ends of the link plate group are connected by a connector 6; the link plate group includes an upper link plate 1 and a lower link plate 2; the upper link plate 1 and the lower link plate 2 are cross-connected by the connector 6 and the central mounting hole 2-1 on the lower link plate 2; the spikes 4 are installed on the upper link plate 1 through the mounting assembly 3; and the spikes 4 are provided in plurality. The mounting assembly 3 includes a spike seat 3-1 and a nut 3-2; the lower part of the spike seat 3-1 is installed in the fixing hole 7 of the upper link plate 1, and an external thread is provided on the outer part thereof; a groove is provided on the upper part of the spike seat 3-1, and a rubber ring 3-3 is installed at the groove; and the spike seat 3-1 is provided with the spikes 4. The spikes 4 are provided in 4, 6, or 8 numbers, the number of the spikes is an even number, and the spacing between the spikes 4 is the same. The two ends of the lower link plate 2 are respectively connected to one end of the upper link plate 1 of the adjacent link plate group through the connector 6 and the connecting hole 2-2.

[0033] When installing the utility model:

[0034] First, install the spike holder 3-1 on the fixing hole 7 of the upper link plate 1; install the nut 3-2 on the middle of the spike holder 3-1; install the rubber ring 3-3 on the groove of the spike holder 3-1, and the rubber ring 3-3 in this embodiment is an O-ring; install the spike 4 on the upper part of the spike holder 3-1; install the spring into the central mounting hole 2-1 of the lower link plate 2, and then install the positioning pin into the positioning pin hole of the lower link plate 2. Then, the upper link plate 1 and the lower link plate 2 are cross-mounted together, and connected in the middle by a connecting piece 6. The connecting piece in the utility model is a bolt, and the upper link plate 1 and the lower link plate 2 can rotate around the bolt, and a pair of link plates are assembled.

[0035] A spring is installed on the connecting holes at both ends of the lower link plate 2 of each link plate group, and is fixed to the upper link plate 1 on the adjacent link plate group with bolts to form a chain, which is assembled according to the required length and has multiple lengths to choose from.

[0036] The spike 4 in the utility model is made of stainless steel throughout, the upper end surface of the tube mouth is pointed, one or at least two barbs 5 are punched on one side of the round tube, and the two or more barbs are at least arranged in one row, which increases the pull-out force after the spike 4 is inserted into the tire, and avoids the problem that the spike 4 is not pulled out by the tire on the roadblock due to too small pull-out force. The upper link plate 1 and the lower link plate 2 have various lengths and shapes, which can be changed according to needs, and the material can be modified nylon, aluminum strips, steel plates, etc.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and 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 will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A thorn nail, which is a hollow tube, and its upper end surface is an inclined surface; characterized in that: The upper end surface of the thorn has an inclination angle of 15°-25°; the side of the thorn is provided with a barb with the tip pointing downward; The barbs are pressed to form outwardly tilted triangles.

2. A piercing nail according to claim 1, characterized in that: The number of the barbs is one.

3. A piercing nail according to claim 1, characterized in that: The number of the barbs is at least two.

4. A piercing nail according to claim 3, characterized in that: The barbs are arranged in at least one row.

5. A roadblock, characterized in that it comprises the spikes according to claim 1; the roadblock further comprises a plurality of link plate groups; the two ends of the link plate groups are connected by a connecting piece; The link plate group includes an upper link plate and a lower link plate; The upper link plate and the lower link plate are cross-connected through a connecting piece and a central mounting hole on the lower link plate; The thorn spikes are installed on the upper link plate through a mounting assembly; the thorn spikes are arranged in plurality.

6. A roadblock according to claim 5, characterized in that: The installation assembly includes a spike seat and a nut; The lower part of the spike seat is installed in the fixing hole of the upper link plate, and an external thread is arranged on the outside thereof; A groove is arranged on the upper part of the spike holder, and a rubber ring is installed in the groove; The thorn nail is installed on the thorn nail seat.

7. A roadblock according to claim 5, characterized in that: The number of the thorns is 4, 6 or 8, and the spacings between the thorns are the same.

8. A roadblock according to claim 5, characterized in that: The two ends of the lower link plate are respectively connected to one end of the upper link plate of the adjacent link plate group through connecting pieces and connecting holes.

Images